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-   -   Piston perfromance (https://classracer.com/classforum/showthread.php?t=49148)

Joe DeMarzo 09-02-2013 04:21 PM

Re: Piston perfromance
 
Dwight, now we are getting somewhere. Strictly stock. Would the flat top with notches be worth carrying the extra 260 lbs? Rough HP number on a dyno, 10, 15, 20 HP less from the dish piston?

The flat with notches is a better piston but would it worth the weight?

I am asking a lot without much info, lol that why class racers are the best!

CFMCNC 09-03-2013 12:40 AM

Re: Piston perfromance
 
In most cases a spherical dish will make the most power,However there are a lot of variables.Bill C.

ron mattson 09-03-2013 05:11 PM

Re: Piston perfromance
 
A dish also means more volume in total, a bigger bomb in theory
and we can fool the engine into thinking its got more
compression than it really does.

monahan 09-03-2013 07:46 PM

Re: Piston perfromance
 
joe I have 2 complete tune port 350s throttlebody to oil pans that I have run and dyno tested one is 1989 and one is 1990 all engine specs are the same except one is a flat top 4 valve reliefs and one is dish 4 relief when all testing and flogging was done there was only 2 or 3 horse power and and three or four hunderth different the only big plus is the 1989 is rated at 4 less hp we can talk more at etown if you want sorry about the grammar ok I am off the soap box gene monahan

Joe DeMarzo 09-03-2013 08:56 PM

Re: Piston perfromance
 
Geno I will look you up at Englishtown, Ron that is what I thought but was not confident in saying that.

Thanks.

Dave Ley 09-03-2013 09:02 PM

Re: Piston perfromance
 
Joe , Should I be bringing the 2 X 4 ???

Joe DeMarzo 09-03-2013 09:06 PM

Re: Piston perfromance
 
lol, you go to Indy for 10 days and I get loose... bring it I need a reality check again.

Lee Valentine 09-04-2013 05:37 PM

Re: Piston perfromance
 
I was thinking we could all chip in and get Joe a play station 3 to occupy him so he stops with these weird ideas. Still thinking about the 2 BBL.? Just busting them, see you at E-Town.


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