gt40 heads
Thread Starter
1st Gear Member
Joined: Jan 2008
Posts: 145
From: New Jersey
gt40 heads
Any input on gt40 heads cobra upper and lower whats the best cam to run? Also what route should i take with rockers? just looking for the most power with out spending my whole tax return! thanx for any input
5th Gear Member
Joined: Sep 2004
Posts: 3,145
From:
RE: gt40 heads
GT40 heads, and a gt40 intake are a proven combination. They will give you a ton more power/torque. For a fun street combo like that, look at the Comp 2030/2031 cams. I have always liked them in my fox cars. I had an E-cam in my last Fox, and did not like how the power rolled on nearly as much as I did with the comp cam.I have heard a lot of people fussing about the XE270HR-12/14 cams, so you may look into them as well.
As for rockers, some nice FRPP, Scorpion, or Crane 1.6 pedestal mount roller rockerswould be perfect for your combo.
As for rockers, some nice FRPP, Scorpion, or Crane 1.6 pedestal mount roller rockerswould be perfect for your combo.
6th Gear Member
Joined: Oct 2005
Posts: 6,028
From: st clair shores MI
RE: gt40 heads
for the heads... port the exhaust and clean up the intakes. smooth out the thermactor bump too.
possibly port the lower intake, at least maybe get the heads matched to the intake
cam ?? stay under .500 lift and go w/ a 1.7 rocker
imo that combo has the ability ro run 12's on motor if everything else is stock, proabably make over 300 REAL hp (my buddys car setup similar but no cam or intake porting , but a real gt40 tubular intake went 11.80's squirting 125 on it)
possibly port the lower intake, at least maybe get the heads matched to the intake
cam ?? stay under .500 lift and go w/ a 1.7 rocker
imo that combo has the ability ro run 12's on motor if everything else is stock, proabably make over 300 REAL hp (my buddys car setup similar but no cam or intake porting , but a real gt40 tubular intake went 11.80's squirting 125 on it)
2nd Gear Member
Joined: Sep 2007
Posts: 334
From:
RE: gt40 heads
All depends on what your lookin for...I have the set up you are looking to do in my DD. Its ok put down 270 on motor with Ecam.....had a 100 shot on it....now that made it a lot more fun. When I was on motor made fora good racewith z28's....so yeah its cool but in the end is it ever enough? LOL!!!! feels like a pig now...and the motor has been in my car two weeks....haha...make sure you figure upgrading yourinjectors, Mass Air, exh. (may need to get new headers) and such into your budget
Thread Starter
1st Gear Member
Joined: Jan 2008
Posts: 145
From: New Jersey
RE: gt40 heads
i have long tube headers tb and mass air i think 75 not to sure..i have a cobra upper and lower. if the gt40 intake is there should i use it or stick w/ cobra? will i have any clearence problems with the heads? thanx again for the help
D.R. THE PATHETIC DORK
Joined: Jun 2007
Posts: 30,871
From: West Virginia
RE: gt40 heads
the gt-40 stuff is a step up from stock and a proven bang for the buck power producer but in the end it won't be enough to satisfy your desire ..heck low 12's on all motor weren't enough to satisfy my need for speed and only when I sprayed a 100 on top of that was I finally satisfied
2nd Gear Member
Joined: Sep 2007
Posts: 334
From:
RE: gt40 heads
I was just coming home from work and ran into an STI beat me by a half car (had a million gauges and a turbo I could hear over my 40 series flowies but still).....see this sort of thing shouldnt happen....LOL you could do this....do the GT-40 stuff and with the extra money get a 75-100 shot dry kit....its cheap and it will rip.....oh I dont think your longtubes are going to work or might have to change one spark plug boot....might need to ask sombody else on here???
Thread Starter
1st Gear Member
Joined: Jan 2008
Posts: 145
From: New Jersey
RE: gt40 heads
oh I dont think your longtubes are going to work or might have to change one spark plug boot....might need to ask sombody else on here???
3rd Gear Member
Joined: Jan 2008
Posts: 580
From: Pennsylvania
RE: gt40 heads
GT40 heads, and a gt40 intake are a proven combination. They will give you a ton more power/torque. For a fun street combo like that, look at the Comp 2030/2031 cams. I have always liked them in my fox cars. I had an E-cam in my last Fox, and did not like how the power rolled on nearly as much as I did with the comp cam. I have heard a lot of people fussing about the XE270HR-12/14 cams, so you may look into them as well.
As for rockers, some nice FRPP, Scorpion, or Crane 1.6 pedestal mount roller rockers would be perfect for your combo.
As for rockers, some nice FRPP, Scorpion, or Crane 1.6 pedestal mount roller rockers would be perfect for your combo.
cobra is just as worthy.... but edlebrock has a great reputation that u can't beat honestly.... their research team is the best of the best/ "top gun"
LASTLY, .........EVERYONE has said some meaningful things.. but honestly... you should just do a "pure" engine rebuild and save ur money... bc down the ROAD you are going to want to do more... be smart.... think and research more.