Maximum lift on stock sbc heads
Web19 nov. 2014 · They already have all the upgrades. (.530" lift) The open chamber #441 heads are real good for a low cost, low cr 350 roots superchager motor with porting +2.02x1.60 valves and dished pistons. Or used on a dirt motor where the class requires a 76cc smogger head. Better than 882. But the vortecs are so far ahead of all the old stuff. Web16 nov. 2006 · It seems to me that I recall .450" valve lift being the 'safe' upper limit, but just wanted to double check. Smog era 350 engine, low (under 4500rpm) rpm range, pretty small aftermarket cam. .450 sticks in my mind as the practical limit for stock springs. When I worked in a speed shop, the cams with over that always had the "must change springs ...
Maximum lift on stock sbc heads
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Web7 mrt. 2013 · While chatting another gearhead who was over picking up some parts from me, we were looking over and discussing the Vortec heads for my Challenge car's SBC, and he mentioned that if I was using a higher-lift cam (which I am) with heavier springs … Web6 mrt. 2009 · Flow characteristics, on double hump heads are very limited, even with drastic porting they wont flow much past .550 lift with big inch sbc Also if you run much more than 350-360 ci your really limiting the power potential, on 283-327 they run awesome and if …
http://www.montecarloss.com/community/ubbthreads.php?ubb=showflat&Number=267425 Web28 jun. 2015 · Decent sized hydraulic cam, single plane intake and 750 holley, all of this stuff out performs those heads. with the flat tops you have to watch the chamber size because a 64cc chamber will get you 11:1 depending on your quench and that might not work out too good on pump gas with the hyperutectics.
Web13 apr. 2015 · •Maximum valve lift on Vortec cylinder heads is .460-inch to .480-inch. This range is due to production line machining and casting variance. It is highly recommended to check for clearance on anything over .460-inch lift. •Vortec heads require a … Web19 mrt. 2009 · .480 is the max lift for stock SBC. Uh oh! I'm running a .484 lift cam with stock lifters and roller tip rockers. Quote: I am by no means an expert, but I'm running .488 lift on stock springs and it is fine. I have heard that .500 is the max or slightly more than …
Web9 mei 2011 · If using the SBC OEM roller lifters and retainers (aka dogbones), lobe lift must be kept below 0.354” so the lifters don’t lose contact w/the retainers. Cam lobe to connecting rod on strokers. 1 - 4 of 4 Posts. This is an older thread, you may not receive …
Web2 sep. 2014 · I'm putting a set of Vortec heads on my sbc 400 my cam has a lift of .443/.465. i've heard a lot of different things about the highest lift vortecs can take without machining ive heard .420-.550. which seems a little high. I have matching springs, Competition Cams 742-16 Steel Retainers, with locks, do not have new valve stem seals … drj internationalWeb13 okt. 2004 · Most stock small-block Chevy springs, for example, limit total valve lift to no more than about .500 inch. This is why checking these clearances is so important. The Extras Up to this point, all of these operations are necessary for a proper rebuild of your … dr jinsil sung orthopedics norwood maWeb9 aug. 2002 · 2,664 Posts. #2 · Jul 29, 2002. The 291s aren't like the earlier 461s they made the chamber work better with more lift. With a 327 and 3.08s and an M20 lift is not your problem unless you change the rear axle ratio it will be a stone no matter what you do. You could use a 3.42 low ST10 they work well with 3.08s. P. dr. jinping chai arlington txWeb2 apr. 2024 · No matter, we swapped out those .480-inch lift truck springs once again for the performance-oriented Comp units and bolted our 243 heads on top of the LY6 6-liter, using the same Edelbrock ... dr jinsong zhang richardson txWeb16 aug. 2009 · Max lift with stock heads Engine & Drivetrain Register or Log In To remove ... Does anybody know off hand what the max lift stock valve springs can take? ... 1965 Chevy Bagged,361 sbc,voodoo cam,1.5 full roller rockers,patriot 185cc vortec heads … dr. jinsy andrews columbiaWeb27 sep. 2024 · The stock Vortec iron head will not tolerate more than 0.440-inch lift. We measured our stock iron heads right out of the box and the retainer-to-seal clearance was only 0.470-inch. Subtract the standard 0.050-inch clearance, this leaves only enough … drj international holdingsWeb28 jun. 2015 · Decent sized hydraulic cam, single plane intake and 750 holley, all of this stuff out performs those heads. with the flat tops you have to watch the chamber size because a 64cc chamber will get you 11:1 depending on your quench and that might not work out … drj investments inc ocala fl