Factory Stock L72 427 Build
One of the factory stock racers gave me a chance to build a L72 427 which I appreciate. Growing up around GM performance cars as kid in SoCal, then having a 68 Z28 with a L72 in high school left me very excited about this engine build. The build consisted of a 289 casting block with all the machine work, turning a tuftrided indexed 366 crank, custom JE pistons, modified oiling system, Bullet L72/LS6 cam, unported 840 heads, custom valves from Ferrea, factory GM rectangle port intake. Power in factory stock trim with a conservative tune was 535 HP @ 6300 RPM and 523 HP @ 6700 through the factory cast exhaust manifolds with the factory correct carb.
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Re: Factory Stock L72 427 Build
Wow!!
How's it going Mark? |
Re: Factory Stock L72 427 Build
I was fortunate to have owned a 66 Vette roadster with the 427-425HP when I was in my very early 20'S. 40 years later I still feel that car. History like that never dies.
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Re: Factory Stock L72 427 Build
Ohh come on Mark, you could never make that kinda power thru manifolds... [img]<<GRAEMLIN_URL>>/biggthumpup.gif[/img]
Congrats |
Re: Factory Stock L72 427 Build
OK , i'll answer that myself.... YES YOU CAN!!!!! Congrats
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Re: Factory Stock L72 427 Build
What could that run in a chevelle?
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Re: Factory Stock L72 427 Build
A certain, 2 door post L89 "396" went 12.12 at PSMCDR, haven't seen any L72 COPO Chevelles run yet, they would be the heavier 2 door hard top, so maybe a little faster? I would love to see this combo at PSMCDR.......
Ryan |
Re: Factory Stock L72 427 Build
Thanks for taking the time to speak with me about the lifter situation I ran into.https://www.yenko.net/ubbthreads/pics...68-photo_4.jpg
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Re: Factory Stock L72 427 Build
i saw this thing on the dyno and its killer.
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Re: Factory Stock L72 427 Build
Translate that 427 to a 69 Corvette spec L88 with much better flowing exhaust manifolds and you will see why they are low 11 second cars. No wonder they break out even when they aren't trying.
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