I had my GTP stage II heads flown last week. Dont have the whole run down at hand but they maxed out at 258/217...flowed stalled at .600

Didnt make to the advertised GTP flow numbers on the intake..but made up for it on the exhaust I guess.

 

I would like to quietly take them to GTP and see what turns out .


Good luck with the stroker.
Ryan

 

258 for stage 2's? hmmmmm

 

i was thinkin the same thing... did you willingly bend over? i would expect more.. for what they charge..

 

Hmmm...got that much on the intake myself on my first attempt at hacking..oops...I mean porting my own heads.

 

unless theres something i dont know......that seems pretty low......id be pissed........theyd be getting one hell of an angry phone call

 

That sucks! what are you going to do? I thought GTP was the best. This is the first bad thing I have heard about them.
Goo luck with what ever you do.

 

that is actually about normal from what we have seen

 

1800+ dollars for those numbers Call and BITCH!

 

about 255 and 195 are the #'s from the last set that I tested. He was not happy with the #'s but he was glad that he found the reason the car wouldn't run as well as he had expected.

NightTrain66

 

What about the numbers below peak? Can you post the complete flow chart?
Not defending or condemning anyone... just would like to see the rest of the flow numbers.

What were you guaranteed the heads would flow?

Thanks.

 

just looked up the #'s that I had. I was going from memory and I was a lil off. Here are the #'s on the set that I had checked about 5 months ago.

lift------intake-----exhaust
.050-----263.-------25.0
.100-----52.6-------48.0
.150-----92.1-------74.7
.200----120.8------109.2
.250----147.7------130.3
.300----172.9------151.1
.350----198.8------166.3
.400----215.7------172.3
.450----226.5------175.6
.500----237.0------176.4
.550----242.5------178.7
.600----245.1------177.9
.650----248.2------178.3
.700----249.6------178.7

NightTrain66

 

Not all flowbenches flow the same.

I've seen heads that apparently flow 268cfm@.500 lift only flow 235cfm on another flowbench. Happened to me actually.

Also once you put the intake on it will restrict the intake flow alot more anyways. The intake doesn't flow nearly as well as heads do.

 

just looked up the #'s that I had. I was going from memory and I was a lil off. Here are the #'s on the set that I had checked about 5 months ago.

lift------intake-----exhaust
.050-----263.-------25.0
.100-----52.6-------48.0
.150-----92.1-------74.7
.200----120.8------109.2
.250----147.7------130.3
.300----172.9------151.1
.350----198.8------166.3
.400----215.7------172.3
.450----226.5------175.6
.500----237.0------176.4
.550----242.5------178.7
.600----245.1------177.9
.650----248.2------178.3
.700----249.6------178.7

NightTrain66

 

just looked up the #'s that I had. I was going from memory and I was a lil off. Here are the #'s on the set that I had checked about 5 months ago.

lift------intake-----exhaust
.050-----263.-------25.0
.100-----52.6-------48.0
.150-----92.1-------74.7
.200----120.8------109.2
.250----147.7------130.3
.300----172.9------151.1
.350----198.8------166.3
.400----215.7------172.3
.450----226.5------175.6
.500----237.0------176.4
.550----242.5------178.7
.600----245.1------177.9
.650----248.2------178.3
.700----249.6------178.7

NightTrain66