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Author Topic:   Chevy 377
johder
Dirt Forum Racer

Total posts: 100
posted September 15, 2005 07:12 PM  
I am building a new motor for next year. I have a 400 small block complete...2 bolt...

What do i need to make it a 372 high rev motor??? im goin to try to use stock 4.125" bore (if i can get away with a hone)..

I am goin to use a 350 "steel" crank...what size rods and pistons can i use???

also goin to use a set of double humps, 2.02 valves...i am not sure of the exhaust vavles...and have to run a rochester 2bbl...

will this be a good set up??? 1/3 mile semi bank in 1-2 and high bank in 3-4...

let me know please...also car is pure stock fully skinned metric monte...

tranny is turbo 350...goin to run it in 2nd gear....

Donnie Ross
Dirt Freak

Total posts: 264
posted September 18, 2005 06:01 AM  
use 5.7 rods and stock compression hieght 400 pistons, however trying to build a high rpm motor fed by a 2bbl probably is not a good idea it will run out of air at higher rpms on you, this has been debated a lot but a 355 may be a better choice or a 400 geared to use the extra tourque and not try to turn it to high.

A. Bighurry
Dirt Full Roller

Total posts: 35
posted September 21, 2005 07:58 PM  
The volumetric efficiency is better with a smaller motor. A 355-358 would work well.

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