gt40 vs gt40p

[Foxfan88]

how much of a difference is there really b/w the two. i have heard locally that the Pheads are ALOT BETTER. I always thought they were very close.

all i need to get is heads for my motor!!!!! making progress !

 

[bluevenom867]

I though you were porting a set of E7's?

What happened to thous?

The P head flows ever so slightly more.....

But the GT40 will be sure to fit.

Get witch ever comes first,cheapist.

 

[Euphoric306]

depends on your goals mang, i went with the gt40 ones a)because they were available and are a good upgade to teh e7's
b) i found out later the regular gt's will not change the combustion chamber size much, which is good. i plan on going single turbo in a year or so, and the p heads would make the comp ratio a little much for forced induction.

n/a the p heads will perform better but i doubt it's worth getting different headers (or aguably different plug wires and header wrap.) just for that much gain. either one with a little work done will easily support what my goals are anyway, so its really up to you

 

[85_SS_302_Coupe]

Exact same heads except that the Ps provide a more efficient combustion because of spark plug placement. It doesnt sound like much but it's enough to make more power. Also i believe the combustion chambers are shaped/cc'ed differently but i don't have exact numbers.

 

[Foxfan88]

i got realistic and sat them aside for now, i figured as much money as i spend getting them fit for a new motor, i could buy a decent set of gt40s , plus i doubt if i finished porting the heads they wouldnt even flow as good as stock gt40s anyway

 

[bluevenom867]

i got realistic and sat them aside for now, i figured as much money as i spend getting them fit for a new motor, i could buy a decent set of gt40s , plus i doubt if i finished porting the heads they wouldnt even flow as good as stock gt40s anyway

Thats none sense foxfan,un worked the gt40 heads shouldnt flow more than your ported E7's.

You could put the money into a good SS valve with undercuts stems,and a pro 3 angle valve job

 

[Roland69]

the P's require new headers

 

[Roland69]

Go for the GT-40's and they should be cheaper to

 

[bluevenom867]

heads

headers...

lol,we know what you meant though

 

[Roland69]

I'll fix that hang on