292 Pistons

[TJ's Chevy]

Originally Posted by Classic v6 GMC's

Thanks for the reply!
Yes I was just looking at .030 over because that is a common over bore. I'm going to wait for the machinist to tell me what size is needed.
I saw the different compression distances and dish sizes and that is why I wanted suggestions.
Any reasons for those pistons over the other? Just wondering.

I am building this for my 4x4 so I want to keep the low end torque.
How much would 1.84 or 1.94 intake and 1.6 exhaust valves help?
What about lump ports?
I plan on going with a 4 barrel intake.

I'm not sure what the stock distance was so I picked the furthest. haha Personally I'd prefer sealed power pistons over those, but you can only get cast aluminum propane pistons from them which would bump your compression to 9.5.1.
With stock compression and a stock cam bigger valves with lump ports won't do a whole lot. 1.84's with lump ports would help for sure, but adding some lift would be the best thing you could do.

Here would be a good cam:
http://www.compcams.com/Company/CC/c...x?csid=58&sb=2

This is a 250 cam so you'd have to have it custom ground on a 292 cam.

4 barrel intake with headers would help to. You'll get better mid range with them.

Really the best thing you could do is bump the compression up for more power, then you would have the low end still. 5-8 pounds of boost would really do it.