V8 Turbo Questions

[V6RACER]

Since your starting from scratch the bigger motor probably won't be any more expensive so I'd go for it. I just wouldn't push it to the point where your having to run a shorter rod on a long stroke.

I can go with a

6.125" rod with a 4.0" stroke 428 cubic inches = 1.200" from pin CL to top of piston.

or

6.0" rod with a 4.0" stroke 428 cubic inches = 1.325 from pin CL to top of piston.

or

6.0" rod with a 4.125" stroke 441 cubic inches = 1.2625" from pin CL to top of piston.


In a perfect world I'd want 441 cubic inches and it would give me a little more on the top of the piston.....

What you think? 6.0" rod too short?

 

[Louie L.]

Have out checked how much comp ht. you need to have a piston hold your power level.

 

[V6RACER]

Have out checked how much comp ht. you need to have a piston hold your power level.

The guys at JE said anything over 1.125" was good..

 

[dr_frankenstein]

http://www.turbobuick.com/forums/engine-tech/271757-stroker-rods.html

Might help.

A.j.

 

[turboken77]

rod ratio

hello i have a twin turbo 377ci 400 chevy bore 350 chevy 3.48 stroke with the big 4.125-4.155 is a good combo my engine makes 1180 on 10 psi of boost i would stay away from the big stroke engines go with a big bore as big as you can go ,iam working on a new combo now 390ci little m block bryant 3.55 stroke crank not sure on the bore we will see what we have left in the block ,lunati pro mod rods,diamond pistons,mike moran cam package 15 degree cfe heads 10to 1 compression 950 blowtrough carb may go to e85 soon iam runnin twin 60mm turbos but will go to twin 72mm it should be in the 1800 hp range any questions hit me up

 

[turboken77]

ohh and the turbo system is from nelson racing engines

 

[turboken77]

go with the cfe 15 degree !!

 

[C. L. Smith]

New Member

Hi Folks;

I'm a new member

Restoring 1984 GN