wow, id be happy with a 12.99, but i dont know about that, this whole build ive been figuring that it will put me in the mid 13's.........
Less than 300rwhp will put you into the 12's.
There was a guy on another forum that ran a 12.1 with 305 rwhp and no drag suspension.
whats the stock rwhp for 98gt, and 99-04 gt?
lol these cars make 220rwhp, there's no way its only gonna make like a 40 or 50hp diffrence with porting the heads, cams, long tubes, pullies ext..i promise you it's gonna make atleast 300rwhp.
they make 220,actually 215 at the flywheel man,he is getting it dynoed so we are talking rear wheel horsepower here.also he ported the heads himself and if i read correctly they are npi?? nobody knows for sure how well he can posrt a set of heads also so its 50/50.its very easy to take away from a head while porting something that in fact really is there for a reason.lot of factors here.
for some reason i thought this was a 99+ motor. I didnt know it has non pi heads. In that case i would say 280rwhp
That's only in certain ranges of the lift schedule, and that's which machining the combustion chambers, often CNC'd. And port matching.Ported npi heads flow better than ported pi heads, if they were done right.
That's only in certain ranges of the lift schedule, and that's which machining the combustion chambers, often CNC'd. And port matching.
wow, id be happy with a 12.99, but i dont know about that, this whole build ive been figuring that it will put me in the mid 13's.........
STFU TGJ, stop riding my sack every time i post something you turn your nose up to. That's the first time I've posted that, if you can count that high. I'm usually the one defending ported NPI's flow numbers. I was comparing his hand ported set which doesn't even address the cumbustion chambers to CNC ported PI heads available for certain companies. I know for a fact as well the NPI ported heads can flow better, my friend Emerson who owns lastcallracing's heads were hand prted by Totoal performance of SD and they benflowed better than ported PI heads. But i've yet to see a set of heads you can buy retail that are ported NPI's flowing better than most of the best ported PI's - so unless everyone who's porting NPI's everywhere are matching the same process as the handful i've seen that outflow ported PI's then i don't know what we're arguing over. If your NPI's flow better than PI's then that's fine, post up a flow test. otherwise we have no idea since no company sells them, which might be because they are half thread.
I'm comparing his home ported only intake NPI heads to P&P PI heads. Can't say i've ever posted that before. I was trying to say (minus typo) that that's what machining and port matching, and often cnc'ing, is for - to make it flow better across all lifts not just peak where the intake/exhaust ports are maxed in stock form, but rather direct air more effciently.Really. It seems to me we had this discussion at least once before. You recall this thread?
http://forums.stangnet.com/752232-hp-gain-p-p-npi-heads.html
My P&P NPI heads intake flow data.
0.050 44
0.100 70
0.150 81
0.200 128
0.250 148
0.300 170
0.350 188
0.400 204
0.450 216
0.500 225
0.550 231
0.600 234
Renegade Racing in Milford MI sells CNC P&P NPI, P&P PI, P&P SVO and P&P 4V heads. I am running his P&P NPI heads.
I'm comparing his home ported only intake NPI heads to P&P PI heads. Can't say i've ever posted that before. I was trying to say (minus typo) that that's what machining and port matching, and often cnc'ing, is for - to make it flow better across all lifts not just peak where the intake/exhaust ports are maxed in stock form, but rather direct air more effciently.
Some companies like MMR and Foxlake recomend not using NPI heads to start with - some have better luck with them in flowing. I'd rather a companies just post up real flow charts similar to in that thread you linked.
And traditionally P&P PI heads have flowed better, me finding the exception to the rule like Emerson's heads or yours make good cases to say "these heads flow better than PI heads" but not NPI heads in general. If i found two used sets and the guy didn't know who did the work i'd stay with PI's. Unless it's a NPI shortblock and you want boost in the future (an important note to consider).
So Renegade's P&P PI heads flow less and P&P NPI's?
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?