Chevy 350 solid lifter valve lash specs

 

Chevy 350 solid lifter valve lash specs. 5:1 ratio difference at the lash point and rounded-down to the next-nearest thousandth or two to Mar 27, 2011 · As the metal in the valve train expands the lifter, pushrod, and valve stem elongate - taking up clearance in the system. Method #1: For a small block Chevy (or any engine with a firing order of 18436572) you can set the valves by turning the engine over just two times. For example, a cam with a listed 0. Oct 6, 2011 · Seth . 99 at 114. As has been mentioned, your exhaust valves will be hung open, and burned well before that. These were the clearances determined by engineering based on design and intended usage. Rocker ratio is not reliable Sep 21, 2005 · Grossvalve lift measures a lofty 0. The original Chevy 265-ci small-block began life actuating diminutive 1. Valve lifters play a key role in the valvetrain of pushrod engines. If all looks good, loosen the lock nut slightly, while trying to twist the pushrod, between your fingers. May 26, 2005 · That's pretty good for trying to set lash with the motor running, I've never even attempted that with solid lifters. Let them cool overnight and see what they are cold on that cylinder, and then lash the rest to that cold spec. 88 gears and close ratio Muncie it would run 11. The lash specs are designed to match the cam and the rocker arm ratio. lots of variables there. You'll find that sometimes when you tighten the set screw or the bolts on the stud girdle, that the lash Are you using solid lifters? I'm not an expert but from my understanding, if you have solid lifters, you need to have a few thou of lash cold so that there's minimal lash at temp, you'll have to research for the specs. The lobe separation is ground at 112 degrees Jul 31, 2005 · Here it is. Feb 3, 2018 · The term 30-30 is a reference to the solid-lifter cam’s valve lash settings assigned by Chevrolet. Setting Valve Lash On Chevrolet. 050" of lifter rise, but due to the valve lash, the cam is roughly equivalent to at hydraulic cam with a duration of 240 degrees at . Rotate the engine in the normal direction of rotation (clockwise looking from the front of the engine) until the exhaust lifter on the cylinder that you are adjusting just begins to move up. 8 cyl. that will help you pick some lash specs. Then there was the 30-30 camguess what the lash was. Dec 20, 2014 · Lash is adjusted with the cam on the base circle. To get there, use the exhaust opening and intake Nov 15, 2013 · Adjusting one cylinder at a time , watch the exhaust valve on each cylinder to just open and then adjust the intake valve. Engine respond to the actual movement of the valves. Set all valves to . Jul 7, 2020 · Not sure I understand your question. The intake valve does not close until about 82 BTDC. Thanks for the help. This is because less clearance means that the valve opens earlier and closes later as the lifter rides on the cam lobe. 560 inch, if the engine used a hydraulic lifter, which has no lash. As listed in that publication, the 140 cam carries th GM p/n 3727140, solid lifter cam, offered for off-street use only, . 0:1 static compression ratio and big Sep 9, 2009 · Find TDC #1 cylinder, line up the timing mark on the balancer, adjust the valves per your manual, then turn the engine one revolution and line up the timing mark again and adjust the remaining valves). 002") to the "HOT" setting and recheck once the engine has reached operating temps. This procedure is similar to most Chevy small block engines and could be used for gener Jul 1, 2010 · When the exhaust valve just begins to open on the first cylinder in the firing order, adjust the intake valve by loosening the adjusting nut slightly while spinning the pushrod until you feel lash in the rocker arm. that plunger can actually pump up upon losing control of the valve/lifter. Jun 3, 2010 · Can anyone give me the proper set up sequences and valve lash adjustment settings for Intake/Exhaust settings for my mechanical lifter LT-1? I've read/heard, after run up to normal temps, . 400-inch. Basically as the exhaust valve begins to open, set lash on intake side. All COMP Cams Camshafts are manufactured to the strictest tolerances. Duration (@ 050 inch lift): 254 int. Working on one cylinder at a time, rotate the engine in the normal rotation until you observe the exhaust pushrod start to rise or the exhaust rocker start to depress the valve. Apr 26, 2013 · Pete B : . 350- and 7. Feb 12, 2013 · The spec duration (approximately 346 degrees) is very long due to the very long ramps, but the valves don't open then because of the . This way you know your getting the Jul 18, 2015 · C3 Tech/Performance - 1970 LT1 350/370 HP Corvette cold valve lash adjustment settings for solid lifters - Trying to find settings for cold valve lash adjustment on a 1970 Corvette LT1 350/370 HP solid lifter engine. Tighten the adjusting nut until the slack is taken out of the rocker arm and pushrod. 012". They were a “flathead” design with the valves in the block. 018 Intake lash, . It made the most beautiful music 3500 to 7800 RPM. 020 on the intake, and . Nov 9, 2020 · This is the procedure on how to set valve lash on a Chevy 350 engine. And/or suggestions on how to adjust. The cam has now been reground with a clearance ramp of . At this point make the correct adjustment to the intake valve. adjust 3exh when 2exh fully open. should be listed separtately for 71, 72 corvette LT-1 engines. Guy I got it from knew less than nothing about the car, it barely ran so I started trying to tune it up, changed carb and distributor, found a broken valvespring and changed that, no amount of adjusting could get it to run well. 4. Badbird Discussion starter. (Commonly . 6 intakes / 1. Material and the design makes the lifters lightweight, yet exhibit superior strength, and a patented oil metering system limits the amount of oil that Apr 15, 2024 · The valve lash is the empty space between the engine’s valve train parts. 020-inch on a hot engine. 012-inch and 0. Mar 12, 2012 · You cannot lash a solid lifter while its running. Jun 25, 2020 · This is zero lash. 018") "So at 18 degrees Oct 15, 2010 · Once you've determined that the valve you are checking is fully closed, actually checking the lash is the easy part. 018-inch for intake and exhaust. Mine is a tight lash cam . As the intake valve opens, then begins to close, as the intake valve is almost closed, set lash on the exhaust valve. 022 or so I think. 680 lift (. 11:1. Nov 14, 2019 · With solid lifters, valve lash will need to be set and adjusted from time to time. Dec 4, 2022 · Zero lash with solid lifters will plow the oil off of every single friction surface, resulting in accelerated wear, and premature failure. CL12-673-4 - Cam and Lifter Kit, CS Nostalgia 30-30+S. With the Jul 24, 2020 · Re: Valve lash help on 454 with unknown cam and specs. To use this method, pull the valve cover so that you can see the rockers and valve stems and turn the engine May 13, 2009 · My UD 272/282 run at . engine will run, and one with the lifter unloaded. Again, if yours is not between 0. To precisely control the valve events at higher engine speeds, all the other 409 high-performance engines carried a solid lifter camshaft. Its solid-lifter cam, known as the "30-30 Duntov" cam named after its 0. 0002 thousanths extra with a nice drag on the feeler gauge. 020-inch lash, then the valve lift would be 0. They go all the way back to the earliest days of the internal combustion engine. 017") My suggestion on playing it safe is taking Jan 21, 2002 · You can take the "hot" setting given to you in the catalog or cam specification card and alter it by the following amount to get a "cold" lash setting. 00]. 440 inch. 022 int/. 5 mm) 1957 grind known as the '097, which referred to the last three digits of the casting number) the "Father of the Corvette", was also Sep 30, 2003 · They give the specs on the cam. OK, I contacted the cam maker (melling) and received a quick response!. Hydraulic lifters compensate for valve train expansion tolerances, allowing the valve train to function with zero clearance and quieter operation. 26 int . Tightening the lash also has a small affect on duration, as it increases slightly as the lash is tightened. Again can play with rocker ratio for effect. 017" hot lash or what ever its at. May 26, 2023 · Here we are setting valve lash on solid lifters on a roller cam on a 1970 small block chevy 350 LT-1#musclecar #engine #shoplife May 9, 2022 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright The adjustment procedure is the same for both flat tappet and roller solid lifters. Like. 018-. 00 ing/wire, B & M 10" 3800 flash converter, turbo-400, 4. Race it, break it, fix it and repeat. 5:1 Jahns pistons and a set of Hooker headers. U pick 'em. Now you can adjust the exhaust valve to ZERO LASH Apr 27, 2011 · Use a feeler gauge, set to the correct valve lash, and place it between the tip of the valve stem and rocker arm. It is commonly known as valve clearance. 030") but original GM spec was . At this point adjust the intake valve on that cylinder to ‘0’ lash with no pre-load. Valves can be set on a hot or cold engine. Bring the engine up to #1 firing (both #1 valves closed and the timing mark aligned with zero on the timing tab) and adjust as follows: exhaust valves 1,3,4,8 and intake valves 1,2,5,7 bring engine Jan 26, 2024 · Once the lifters are positioned properly, try to twist the rocker arm from side to side, to check for play. Like the 327, the two 350 motors shared the 11. 02 worth. Jan 11, 2005 · On hydraulic lifter cams, rotate the engine in the normal direction of rotation until the exhaust valve begins to open. Then, use a feeler gauge to measure the gap between the rocker arm and the valve stem. (you don't need to change the lash setting, just check what it is while hot) and check it the next day (24 hours) when dead "stone cold". 490 inch. adjust 4int when 7int fully open. GM Small Block Valve Adjustment Procedure. 020 inch hot, actually only opens the valve a total of 0. Pete B : you were close. 006"-. Loosen the rocker arm adjusting nut until you can clearly move the pushrod up and down. May 13, 2004 · When you start setting them you will notice that you will alternate between an intake valve and an exhaust valve each 1/4 rotation of the crank. 5 Exhaust Problem: Noisy Valves (Clacking) Here is the procedure I've been using: INTAKE ADJUSTMENT: I Hand turn the engine in it's normal direction of rotation while watching the exhaust valve on that particular cylinder. 6:1 rocker ratio in our test engine, the solid's duration at . For instance, on overhead camshaft engines, the measurement is taken between the camshaft follower and the camshaft or between the tappet and the Jul 28, 2020 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Mar 31, 2001 · The static compression of a stock 302 is approx. All the 348s carried the hydraulic cam and the 340-hp 409s from 1963-1965 also carried the hydraulic cam. 519" lift exh. 018 exhaust, I believe. May 28, 2004 · The S598 is a 272/238/. This action taken by Tom Mobley. 050" lifter rise duration would be once the valve lash is accounted for. This guy doesn't seem to be able to get the idea that nobody has been hired to follow him around cleaning his messes. In fact, with the 1. 002". 03 in (0. 254@050 - . Dec 13, 2011 · Also, the stud girdle needs to be on when doing the adjustment. 1/2 turn is recommmnded for low perf and stock rebuilds. By John Hinckley and Duke Williams. Some of the higher HP BB's recommended Sep 10, 2011 · Need valve adj specs for 396/375h eng w/solid lifters hot & cold if possible. Repeat additional ¼ turns, pausing 10 seconds each time until nut has been turned down the number of turns listed in the Valve Specifications Chart from the Zero Lash Position. 030 for Exhaust. 025") Changing the valve lash changes what is happening at the valve, where it matters. Pete B : Base timing will be around 8 degrees BTDC at idle, depends on the condition of the engine. 72- and 1. IIRC, the lash settings given are correct - or close enough. The distance between these two points will represent the amount of lifter pre-load. (. Talk to the experts. adjust 1int when 6int fully open. Use a feeler gauge, set to the correct valve lash, and place it between the tip of the valve stem and rocker arm. In the evolution of the small-block, now displacing as much as 454 inches out of a standard deck height block, these big-bore small-blocks can now accommodate up to impressive 2. Just my $. Aug 30, 2007 · Cam was new and was run for less than 500 miles and broken in perfect - no scoring. 245@050 - . 030 were the specs for the factory-installed street cam. Must use correct springs Must use a motor oil with zinc and a hair of moly in it for best cam- lifter life. 1. The valves are adjusted 3/4 to 1 turn down and the ignition timing is adjusted to factory specs and that would be 10 degrees BTDC for a 1967 327 L-79. Jan 21, 2019 · For example, if the cam lobe is 0. #14 · Jul 1, 2016. Then rotate engine. 539 inch on the intake and exhaustlobes, respectively, while the valve lash is kept to a tight 0. Simply use a feeler gauge and slide the tab of the correct thickness between Jun 28, 2016 · 1024 posts · Joined 2014. Lifters are BRAND NEW [$121. Make sure the lock nuts still grip tight, as it should take maybe 5-10 ft lb to make them turn. Valve lash measurement area differs from vehicle to vehicle based on engine design. -1. (eighteen thousandths) (0. Specifically designed to capture the essence of the original 1960s muscle car experience Combine Jul 30, 2010 · I built it with the 30-30 cam, 350 HP 327 intake and carb, 11. Chevy Mechanic: Sam C. 025 cold, and since its an iron block and heads, that shouldnt change much, maybe just tighten up slightly as it heats up. #7 · Jul 17, 2009. Since the valve cannot move until all the running clearance (valve lash) has been taken up, the amount of valve lash you use affects the engine’s performance. 020 Exhaust lash) Crower 1. Aug 21, 2006 · This progressive procedure will ensure that you are on the base circle on ANY OEM Chevrolet cam for adjustment, and the factory-recommended clearance on other OEM Chevrolet small-block solid-lifter cams should be factored as well by the 1. 625-inch valve sizes. Adjusting the valves from zero lash , 1/8 turn for short travel lifters and 1/4 to 3/4 for conventional hyd. 500-inch valve lift lashed at 0. 6:1, the valve lift would be 0. 026"Ex. No need to even look at the TDC marks on the balancer because it doesn't matter. (Valve lash is the clearance between the rocker arm and the tip of the valvestem. 242/242, 114/108, . tommer2, that's not degrees in the lash spec, it's thousandths of an inch. You can guess and hope to get close. 016". 507" lift Int, . Solid-Outstanding power & modern tight lash with the exhaust note of the GM 30-30 cam. Solid lifter or mechanical camshaft valve lashing is set very similar to hydraulic lifter camshafts. Corey banned permanently on 3-6-20 for continued abuse and generally being a time-wasting PITA. The earliest engines did not have pushrods or rocker arms. 37:1-vs. The dynamic compression is approx. 544/0. 024 exhaust. 0 comp, 2 1/8 race header, old torker intake, 850 carb, stock single point distributor guessing on a timing curve stock GM coil, plugs, $ 9. Jul 16, 2020 · Comp Cams Extreme solid flat tappet cams #12-676-4 and #12-677-4 You can google these for specs. Compression can not be started until the valve is almost closed. 024"In/. Finally, adjust the lifter by loosening or tightening the adjusting nut until the correct gap is achieved. 019" for both intake and exhaust. 030-inch for both intake and exhaust, the Duntov camshaft uses a much tighter recommended lash of 0. Check the lash on other cylinders and Apr 21, 2007 · This engine has solid lifters. Throttle's Performance. 7 stainless roller rockers Titanium retainers Super 7 keepers Zero deck block 9:8. 008"x 1. 979. Put the 30-30 in a 350 and it would work the same. Camshaft style: mechanical flat tappet. Solids each have thier own specs for setting lash. The traditional method of adjusting valves one or more cylinders at a time with each cylinder at TDC is fine for hydraulics and for most solid-lifter cams, but NOT for the factory "30-30" solid-lifter cam used in '64-'65 L-76 327/365 Shop 350 Chevy Small Block V8, Valve Lifters and get Free Shipping on orders over $149 at Speedway Motors. Where this gets interesting is with tight-lash camshafts requesting a hot lash clearance of 0. A typical LS engine with a performance cam will need a pushrod between 7. Jul 1, 2010 · Solid Lifter Camshafts. Nov 13, 2007 · 3. 050 reads as if Oct 26, 2002 · Small Block Chevy Comp Cam (Solid Lift) 294S Roller Rockers 1. Jul 16, 2009 · B. If you preloaded to the point that you put the plunger all the way down in the lifter, and then floated the valve. With iron block and iron heads, add . What I usually do with a new cam and lifters is to set the valves cold making absolutely sure of what they are set at (on the high side of the lash). Repeat 15 times. Hydraulic flat tappet lifters also offer increased longevity over solid lifters. Determine the length of the pushrod and then add the amount of preload required. Apr 24, 2015 · Doug Herbert Billet solid roller cam (CB6K), int . Re: Solid lifter valve lash adjustment????? 07-08-04 09:38 AM - Post# 476416 In response to loudpedal I agree with loudpetal, push harder to see if they give. There's not a method I know of to find out for sure without the cam This is the Zero Lash Position. ) This is a crucial setting, as it will determine the performance and lifespan of the valvetrain and will keep valve duration and lift on key with the cam’s specs. The alloys Dec 16, 2009 · For hydraulic, you are right - tighten to 0 clearance as indicated by lifting the rocker up and down at the valve, until movement stops, then go another 1/4 to 1/2 turn. Pete B : May 21, 2022 · In this video, Ryan shows you how to install push rods and rocker arms and how to set valve lash on a Chevy 350. . I'd probably go with the S66/S598 on a 108 separation advanced two degrees if you are stuck on 58 degrees. First off valve lash should for the most part be checked hot and running ,or at the very least with the engine at operating temp . Cross reference: GM #3849346. 5:1 ratio difference at the lash point and rounded-down to the next-nearest thousandth or two to ensure that the valves are picked up and seated at ramp velocity. Crane doesn't list advertised duration even though they are licensed to re-pop it and WBR call's it a 336/316. "30-30" SOLID LIFTER CAM VALVE ADJUSTMENT. The chevy 097 cam was . A far better measurement is 254 degrees at . 012-inch hot. Mar 1, 2010 · L46 350-HP 350The starting point for the L46 four our test was the '70 LT-1 350 we built for September's story. Mar 22, 2022 · The cold lash setting will be the clearance when the engine first starts and then will increase with the wider clearance once the engine warms up. When the push rod starts to turn, stop loosening the nut. Our Solid Lifters are manufactured in the USA from the high-quality hardenable iron alloys to withstand design stresses and normal engine contamination. 75 rocker ration. 080" your application requires either shorter or longer pushrods. Mar 10, 2015 · Now, tighten the lash to . Duration is 268deg for both at . Re: solid lifter valve adjustment 08-12-06 02:24 AM - Post# 983218 In response to greg_moreira Unfortunately I know very little about the motor. If you look in the small box that says 'valve tappet clearance' that is for flat tappet cams. Call 800. Solid Lifter Cams: Consult cam spec card or cam manufacturer for correct lash specifications. Mar 16, 2019 · In a mild to slightly modified engine, hydraulic-valve lifters offers several advantages over a solid lifter. 8 mm)/0. Major camshaft manufacturers recommend setting valves cold, to avoid erroneous adjustments on lifters that may be "pumped up" If you are setting valves on a fresh engine that has not been run, everything should be well lubricated before you begin. If you are setting the lash on a mechanical lifter camshaft, use the appropriate feeler gauge between the valve tip and the rocker arm and adjust the lash until there is a reasonable tug or pull on the feeler gauge. Chevrolet 262-400 c. Rog, Published specs vary a little depending on the source. Also HPBooks call's it a 306/306, so go figure. Really though you see these vary from in the high teens range, to in the mid thirty thousandths range sometimes. This is all calculated assuming 12 & 20 valve settings and a real 1. Here is the reasoning behind the revised lash spec. LUNATI/HOLLEY 70992-16 Features: Lunati Solid/Mechanical Lifters are designed to meter the exact amount of oil for optimum performance while maintaining the precise lash needed to allow the camshaft to perform at its best. i. Rigorously tested and checked for quality. My lash usually closes up ~. 5:1. Published: Aug 19, 2011. Confirmed solid, not hydraulic. A cold engine is a lot more comfortable to work on. 020" and 0. Ron. 006". Aug 19, 2011 · Compensating for a Cold Engine When Adjusting Mechanical Lifter Valve Lash. Otherwise I would start at 4 degrees or 104ICL. specs. He rebuilt this small block Chevy 350 which Aug 18, 2011 · Adjust one valve at a time. Aug 22, 2010 · That brings me to my last point that if you are setting lash HOT and not all valves/cylinders are at the same temp your lash will change from cylinder to cylinder and if you lash hotter or colder from week to week your valve lash can change from temperature. If that cam is used on an all-aluminum engine, this comes very close Apr 22, 2006 · Apr 22, 2006. While the 30-30 cam does use recommended lash settings upward of . 1955-1998. 3176 posts · Joined 2005. GM called it a 307/298 and a 316/302 cam, (Chevy Power books 6th and 5th editions). 150- and 1. Jul 4, 2015 · Those duration and lift specs reflect what the effective net . After running for a couple of days, the hydro-lifters filled with oil and quieted down. Chevrolet Solid Lifters - Set of 16. Setting valve and roller lash on a Chevy v8 350 Exhaust Opening, Intake Closing (EO/IC) Method (By Gary Gevaert – July 2013) Page 2 9. also, check your current lash on all the valves and write them down for each valve,,,,check them both HOT and COLD. Should be . 540 inch. For 1961, the 409’s cam intake and exhaust lift increased to . circle on ANY OEM Chevrolet cam for adjustment, and the factory-recommended clearance on other OEM Chevrolet small-block solid-lifter cams should be factored as well by the 1. I didn't mention separation, only intake centerline. 026" on both intake and exhaust. 40MPH like clockwork. 520" gross lift and lash at . Thanks. After the intake valve has been adjusted, continue to rotate the engine, watching that same intake valve. 7=. Camshaft & solid lifter set specs: Basic operating RPM range: 2,800-6,800 RPM. Wow, you're in a jam. With 4. aaggie, Jul 30, 2010. 0122, 7am-10pm CST, everyday. Mar 2, 2018 · With the intake valve on the base circle, install the checking pushrod and lengthen it until all the clearance is removed from the system. As the exhaust valve is starting to open adjust the intake, as the intake is closing, adjust the exhaust. Dec 1, 2003 · With a solid, the lash will take up some of the lifter's motion before there is any valve motion. But does not state what that valve lash is. 350 X 1. 1 comp. Valves. #2. 520"/. Feb 1, 2007 · To adjust valve lash, be it with a hydraulic or mechanical cam, you need to have the lifter on the heel or base circle of the camshaft lobe. Some of these are: no need for frequent valve adjustments, quieter operation since there is no lash, increased valve and camshaft life, smoother engine operation, and the continuous ability to compensate for expansion and contraction of the valvetrain parts due to temperature change. . The rule of thumb that i was taught for a stone cold engin is whatever the specs call for +. adjust 8int when 5int fully open. Jan 26, 2015 · “These work great with either a short-travel hydraulic roller tappet or a solid lifter at the tight limit of possible lash setting for aluminum blocks and heads, around 0. EOIC stands for Exhaust Opening, Intake Closing when working with the intake and exhaust valves in a single combustion chamber. 008" when engine comes up to temp. 012 in (0. 7 rocker =) . adjust 6exh when 1exh fully open. A plunger inside the lifter is pressurized by oil to self adjust and maintain zero lash. If setting cold, add a 'couple-thou' (@. With both aluminum block and heads, subtract . If you do a search on dynamoc compression you will find a ton of info. 6 = 0. 022 on the exhaust. Snug the jam nut and check again. 480 & if you put it at 102 it should close the valve real close to 58 degrees. The . Here is why lots of guys go to looser lash (like 1/4 turn) on a performance build. ” “In many cases, it’s acceptable to use mechanical lifters on a hydraulic camshaft if relatively tight valve lash figures are used,” adds Knight. Feb 22, 2011 · Great responses, guys! Thanks! My p/n info comes from the book, 302, The Definitive 1967-1968 Camaro Z/28 Fact Book by Jerry MacNeish. You have to turn the engine over by hand to get the cam on the base circle and then adjust the nut to get a very slight drag on the feeler gauge of your choice. Adjust the exhaust valve with intake valve almost all the way down or almost all the way open. By Engine Builder. At this point, adjust the intake valve to ZERO LASH with no pre-load at the lifter, then tighten 1/2 more turn. 030 in hot intake/exhaust valve-lash and Zora Arkus-Duntov (the first Duntov cam was the 0. For oneif you float the valves, the engine recovers faster. :noway: The proper way to lash a cam is the EO/IC method. However, if it were a mechanical design with 0. When you get 'er good and hot, shut the motor off and remove 1 valve cover and quicky check 1 valve. Jul 12, 2003 · The revised cold lash spec is . 010 inch, and the valve then opens . Jul 25, 2017 · A lash for this grind should be (. 018 in (0. The solid lifter cam lobe has a gentile clearance ramp area at the base of the lobe and a much faster lifting ramp for the portion where the valve is off its seat. 010" and the lash specified at the valve for that . The easiest way to set hyd valve lash is by using the EOIC method. 050". 28 exh hot. 012 intake and . I was able to get ahold of Doug Herbert and he gave me the specs for cam. 030" of valve lash. Sep 29, 2009 · Hydraulic lifters would be set to zero lash and some pre-load, usually 1/2 turn on aftermarket cams and 1 full turn on old factory cams. 010" is . (701)893-5010. 350 inch and the rocker arm ratio is 1. Feb 20, 2009 · Yes, break the cam in this way, then after the cam break-in set them on one cylinder hot to the correct lash. The lifters (also called “tappets” because of Dec 22, 2010 · from DETROIT. 7. 10. If you set them to zero lash then tighten them, you're effectively opening the valves. 50-inch intake and exhaust valves. Pete B : Yes that is the correct timing - 36 degrees at 2000 rpm, with vacuum line off the dist. 012, where most are . All these cams will outperform the OEM 097 cam in your lil 325 cid sbc. 010"x1. That is presuming that your engine lives long enough to die that soon. When I bought my '56 with a 350 ('69 truck engine), it clattered quite a bit. Apr 12, 2006 · A 454 with a second generation grind L-88 solid lifter cam 1970's technology, stock no work/porting 290 casting oval port with small valve size, 11. / 254 exh. Available in three versions: standard, micropolished, and micropolished with center oiling. Sep 6, 2011 · The traditional method of adjusting valves one or more cylinders at a time with each cylinder at TDC is fine for hydraulics and for most solid-lifter cams, but NOT for the factory "30-30" solid-lifter cam used in '64-'65 L-76 365 HP and L-84 375 HP (FI) Corvette engines (and in '67-'69 Camaro 302/290 Z/28 engines); this cam has VERY long Oct 15, 2023 · To adjust lifters on a chevy 350, start by removing the valve cover and rotating the engine until the lifter is on the base circle of the camshaft. The lash for Ford Y blocks I mentioned earlier was . 012 inch. Aug 25, 2011 · Do one valve at a time one cylinder at a time weather you are using a hydraulic or solid lifter cam. If it's a cam that has a looser lash setting and you over tighten it, it's gonna cause problems. Just loosen the bolt, or bolts, that tighten the jam nut, loosen the set screw in the jam nut, and set the clearance with the feeler gauge. Once again, the most important part is to remember to adjust just one valve on one cylinder at a time – starting with the first cylinder in the firing order and working your way through to the last cylinder. 3 mm)/0. Sam. Wait a minute or two for that hydraulic lifter' push rod seat to return to the "up" position. In my opinion, this procedure should only be done if the engine has a stock cam. Sep 1, 2017 · Published: Sep 1, 2017. Turn nut down ¼ additional turn and pause 10 seconds until engine runs smooth-ly. Rotate the engine again until the intake valve has fully opened. Check 1 valve say at . lifters. Dec 17, 2008 · Cast iron takes time to fully warm up. If you close the valves on any given cylinder and check for pre-load vs lash you should be able to identify solid vs hydraulic unless they are grossly loose mis-adjusted hydraulics. 668 lift, Exh. To set preload, merely tighten the adjuster nut another half-turn after zero lash. 014- to 0. 024 for Intake and . 013" Hot, and is probably why I have damaged several Morel Ultra Pro bushed lifters in a few thousand miles. With iron block and aluminum heads, subtract . Use the fireing order method,,start with #1 tdc compression, then roll the engine 90 degrees and check the next cyl in the firing order,,then another 90 degrees,, and so on. 050. there is one in there for hydraulics on the big block, but all the small blocks listed in there are for solid lifters. Nov 1, 2002 · Changing the valve-lash clearance effectively alters the cam's profile. These are all street solids. And yes, it was gutless below 3000RPM. 030/. Adjust until you arrive at the proper setting and lock the adjuster in place. fw fp ja cj wc ha lc pd ok do