ZR-1 Net Registry Forums - View Single Post - 378 "mini stroker" vs. 391+ Big bore sleeved build.

XfireZ51 · 06-07-2022

It really depends on how much power ur looking for. If u added a set of Pete?s cams to a fully ported stock block, u should be in the 540chp. Very nice street car.
That?s my current build.
If I was going to do a bigger bore motor, a closed deck would be my choice for the added rigidity and stability of the cylinder barrels. I love the idea of a 427 of which there are two I know of. Magic numbers to my ears. And we have several examples of a 391 which uses a stock crank.

06-07-2022	#5
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,686	Re: 378 "mini stroker" vs. 391+ Big bore sleeved build. It really depends on how much power ur looking for. If u added a set of Pete?s cams to a fully ported stock block, u should be in the 540chp. Very nice street car. That?s my current build. If I was going to do a bigger bore motor, a closed deck would be my choice for the added rigidity and stability of the cylinder barrels. I love the idea of a 427 of which there are two I know of. Magic numbers to my ears. And we have several examples of a 391 which uses a stock crank. Last edited by XfireZ51; 06-08-2022 at 09:18 AM.