flat top pistons for boost?
#1
flat top pistons for boost?
My engine builder is the guy that was in GM high techs Feb 06 issue Mr Rob Barth and he is building me a forged 347 with flat tops and just a thicker head gasket. He had nothing good to say about dished pistons and did not want to use them. His car has flat tops and has 10.2:1 compression and he got 840 rwhp out of it and was able to push lots of boost with C16. He even made great power with 91 oct pump?
I just was lookin for opinions on benefits of flat tops and dished pistons? Anyone else runnin boost with flat tops forged bottom end?
I just was lookin for opinions on benefits of flat tops and dished pistons? Anyone else runnin boost with flat tops forged bottom end?
#2
8 Second Club
iTrader: (34)
I ran flat topn in my old motor (-2cc reliefs) at 10:1 compression and it did OK, 9.70s or so. But thats because thats what was there when I bought the car, if I was building a new engine I would rather use normal off the shelf gaskets and dished (or reverse dome) pistons. It really depends on what your goals are, I would guess just about everyone here with a high horsepower car is running a dished piston of some sort - especially with a 4" stroke
#4
8 Second Club
iTrader: (34)
Originally Posted by 52172
What would better dished or dome? Why or is there a better one?
Different theories abound, if you are having someone build the engine and they want to use flat tops I wouldnt argue. Lot of different combos out there that work well and if thats what he wants to use and he has had good results just roll with it.