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differences in flat top pistons

  
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differences in flat top pistons

 
hitace hitace
User | Posts: 158 | Joined: 09/09
Posted: 03/16/10
06:21 PM

pulled the heads off a pontiac 350 and a 400 and the 350 is more the likly stock and the 400 had alot of unknow perfromance stuff done to it I noticed both seem to be flat top pistons but the 400 has a buch of valley of some sort?????





Piston1

Piston2  

67gto 67gto
User | Posts: 77 | Joined: 01/08
Posted: 03/16/10
06:33 PM

hitace

the indentations in top of piston provide valve head clearance

67gto  

gtojack1366 gtojack1366
Guru | Posts: 1256 | Joined: 11/09
Posted: 03/16/10
06:35 PM

The 400 is a stock piston they are just valve recesses.  

Pontiacman8 Pontiacman8
Moderator | Posts: 5776 | Joined: 02/08
Posted: 03/16/10
06:46 PM

+1 the 400 has flat tops with 8 valve reliefs.  
Engine builder,self taught auto body guy.
Horsepower sells engines and torque wins races

Pontiacman8
Pontiacman8
Pontiacman8