421 Piston Recommendations
 

Hi all, Time to get pistons for the original WG 421 for my 1965 2+2. Planned build will be .060 overbore (necessary) aftermarket forged rods, moly rings, original 76 casting heads, Ram air IV cam, Rhodes lifters, Tripower and H.O. exhaust manifolds. I do not have a ton of $$$ for this motor so no custom units for me. Should I go cast? forged? any recommendations for a manufacturer? The last one I built had a set from Warrior racing and I do not think they are in business any longer. any suggestions would be helpful. Thanks in advance!

My two cents, going .060 over will create more heat.

If you're gonna beat on it Forged pistons are a must. A good balance Job is a must also

I'm running BRC forged in the Catalina.

Jim

8 lug, I dont have a choice on .060. I know the heat build up will be a problem but I really want to use the original block. I will not be drag racing but will be thumping around on the street. being a manual trans car, it will see lots of RPM swings.

.060 is not a problem in these early motors. Won't run noticably warmer.

As with Jim above, I am also running BRC Forged pistons in my 63 - 421 bored 30 over (~428).

BRC has a very good tech dept should you have any questions.
(386)364-5623

However, I did not purchase them directly through BRC,. Mine were purchased through
Ken at Ken's Machine Shop
512 S. Main Street
Brooksville, FL 34601
Phone (352) 796-8800
Email: [email protected]
http://www.angelfire.com/fl4/pontiacdude428/

Ken helped in determining the correct dish-out which enabled me to run on pump gas ~ 9.8 compression ratio.

Did the block already go +030?

If you could sneak by at 4.125 that gives you a lot of ring choices.

The +.005 Race Tec is a sweet piece.

Assume all thread watchers have seen the build in HPP -- very cool, and much along these lines. Really put a hurt on the dyno!!!