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Old 11-17-2012, 12:30 AM
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I have about 11 in my 434 street engine,my 454 in my 80 Camaro had 2200,not counting the engine re build(came with the car).camaro ran high 11s
434 corvette not tested or set up for drags

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Old 11-17-2012, 05:47 AM
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Years ago, used a compcam 268H with stock springs in a 454. Ran ok until 4500 rpm then the valve started to float due to weak springs
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Old 11-17-2012, 06:30 AM
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bbc cam choice for tow rig

If you want to go mechanical flat tappet and want strong torque & mid range. Check out this Comp Cams CL11-674-4 with part# 911-16 for springs. The specs are .527/.532 lift & 218/224 duration. LSA 110 I/C 106. Recommended torque converter stall rpm range 1100-1900 (stock). According to Comp Cams simulator peak hp is 352@4000 rpms and peak torque is 531@2500 rpms.
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Old 11-17-2012, 06:36 AM
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if you're try'n to get more out of the truck. and it's a budget..
I'll save you some cash..
if you are not willing to change the valve springs (100-150.oo) when you change the cam..
save your money.. really, don't bother..
as the truck will slow as the valvetrain floats.. AND can bend a valve or if you are really rally lucky, drop a valve..
you're on a budget for a reason.. I get that..
but whats cheaper.. the valve springs or rebuilding the heads because the valves are now bent? and STILL having to replace the springs..
just because the engine was free.. DO YOU HAVE THE MEANS TO REPLACE IT, when you kill it? thats not what I'd call a budget build.. but it's your truck/engine
good luck

never enough time to do it right the first time ,but, always enough time to do it twice AUTHOR UNKNOWN
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