how big for the street?
I have a 632 in the works
Donavon Aluminum block
Callies 4.75 crankshaft
eagle 6.7 rods
Je Custom 10.5 compression pistons(pump gas motor)
Brodix Big Brodie heads(done by Reher/Morrison)
Dart intake
Comp solid roller(it's big) thats all I can tell you.
backed by a Turbo 400 with a brake
Should get about 5-7 mpg, not a economy car thats for sure
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As long as you have a good top notch aftermarket cooling system you should be ok. My 468 stays cool all day long with two sets of fans and a belt driven water pump. One of the fans is attached the the water pump (ditching that soon for an electric water pump).
As stated above more of the issue is cam size and valvetrain
Last edited by JUICED96Z; Jul 4, 2007 at 08:43 PM.
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As long as you have a good top notch aftermarket cooling system you should be ok. My 468 stays cool all day long with two sets of fans and a belt driven water pump. One of the fans is attached the the water pump (ditching that soon for an electric water pump).
As stated above more of the issue is cam size and valvetrain
Wouldnt that depend on the car? And what your doing with that motor?

I do know of one other 632" streetcar a 67 Vette. He posts on Corvette and sometimes Team Chevelle.
http://forums.corvetteforum.com/show....php?t=1728758
Thats true, the more CUI the smaller the cam is in the motor. As in a BIG cam gets smaller with the more CUI the engine gets.
For a 350 a .650 lift cam might be considerd big but for like a 408 its just right.
Its all relative.




