I'm running a 302 with stock intake, 70mm tb and b303 cam. I was wondering which would be best on budget and performance, port my e7 heads and install 1.7rr's, or find gt-40p heads to install. Also, is it true that my bbk shorty headers won't fit on the gt-40p heads? Any advice would be greatly appreciated, thanks!
the P's have a relocated spark plug i got them but im gonna have them ported also should wake the best
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1988 Mustang GT
17x9 Cobra R rims with Nitto NT555 245/45/17 Cold Air Intake Shorty Headers Heat wrapped with 2 1/2 Flowmaster H piped Mandrel Bent w/out cats Under Drive Pulleys 70mm Air meter Ac/ Smog pump Delete Autolight 764's 14 deg Gt-40 Intakes ported 70mm professional Products Tb/Spacer & A9L ecu Max Speed Lowering Springs 3.73 gears Gt40p Heads and E303 cam fms roller lifters 12lb alum flywheel and Mark8 electric fan
either will work well, I'd buy the set that was the cheapest all else being equal (freshened up of low miles). The stock headers will work, but changing plugs will be a PITA and 90 degree plug boots and wire management will be a requirement.
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Tom Moss
88 GT 5spd Vert 3:73s, Flowmaster catbacks, stock cam +4°, GT40P heads & 1.7 rockers, Jet-Hot coated MAC P headers, 97 Explorer intake, 65mm TB and 19# Explorer injectors. 277RWHP/330RWTQ
i burned my #2 off with them the way they are but i do have straight boots can you buy 90 bots to change them or do you have to buy a set of wires
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1988 Mustang GT
17x9 Cobra R rims with Nitto NT555 245/45/17 Cold Air Intake Shorty Headers Heat wrapped with 2 1/2 Flowmaster H piped Mandrel Bent w/out cats Under Drive Pulleys 70mm Air meter Ac/ Smog pump Delete Autolight 764's 14 deg Gt-40 Intakes ported 70mm professional Products Tb/Spacer & A9L ecu Max Speed Lowering Springs 3.73 gears Gt40p Heads and E303 cam fms roller lifters 12lb alum flywheel and Mark8 electric fan
I'm running a 302 with stock intake, 70mm tb and b303 cam. I was wondering which would be best on budget and performance, port my e7 heads and install 1.7rr's, or find gt-40p heads to install. Also, is it true that my bbk shorty headers won't fit on the gt-40p heads? Any advice would be greatly appreciated, thanks!
I ported my own E7 heads and factory lower/upper intake, kept the stock cam, and added Crane 1.7 RR's. Ported E7's work well but still not as good as GT40P's. The only thing that puts me off the GT40P's is the difficulty in changing the spark plugs. I have MAC long tubes which, I believe, will fit on the GT40P's. Maybe someone can confirm if that's the case.
changing my plugs is no problem - but I have MAC headers for the P heads.
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Tom Moss
88 GT 5spd Vert 3:73s, Flowmaster catbacks, stock cam +4°, GT40P heads & 1.7 rockers, Jet-Hot coated MAC P headers, 97 Explorer intake, 65mm TB and 19# Explorer injectors. 277RWHP/330RWTQ
I ported my own E7 heads and factory lower/upper intake, kept the stock cam, and added Crane 1.7 RR's. Ported E7's work well but still not as good as GT40P's. The only thing that puts me off the GT40P's is the difficulty in changing the spark plugs. I have MAC long tubes which, I believe, will fit on the GT40P's. Maybe someone can confirm if that's the case.
I have mac long tubes on my car with the p heads and they all fit, the only one that is a little tight is the #4 plug and its not bad I jus dont have space to slip over a spark plug socket on it but they all clear pretty good.
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Single Cam Hatchback
VTEC - All the lag of a turbo............None of the boost
Quote:
Originally Posted by RLG34750
As a point of reference going from a 290 rwhp car to a 500 rwhp....
will be like riding a 500cc dirt bike and jumping on a "Busa......
I have mac long tubes on my car with the p heads and they all fit, the only one that is a little tight is the #4 plug and its not bad I jus dont have space to slip over a spark plug socket on it but they all clear pretty good.
That's good to know 'cause I reckon even unported GT40P's will be worth 15-20rwhp over my ported E7's without a loss of low rev torque. Since my goal is to have a high torque engine similar to Tom's (tmoss), I think I'll start looking around for a pair of those heads.
port e7 heads or gt-40p heads? 
