GT40 vs. Cobra
12-05-2006, 11:41 PM
#12
6th Gear Member
Join Date: Jun 2006
Location: Maine
Posts: 5,693
RE: GT40 vs. Cobra
ORIGINAL: deanzawistowski
if i am going with the explorer intake would it be a good idea to get the heads off the engine too if i find one? from what ive read it seems like i would be better going with the GT40 heads vs. gt40p. btw i have BBK shorty unequl length headers, so i dont know if those would fit with the p's or not.
Also since mine is an 87 how will all this stuff be compatible with the speed density system??
if i am going with the explorer intake would it be a good idea to get the heads off the engine too if i find one? from what ive read it seems like i would be better going with the GT40 heads vs. gt40p. btw i have BBK shorty unequl length headers, so i dont know if those would fit with the p's or not.
Also since mine is an 87 how will all this stuff be compatible with the speed density system??
The GT40 heads have a lower compression though, so unless you're running forced induction, you may want to get them milled to at least bring the compression up to 9.5:1.
And yes Glasersil, the GT-40 intake looks better. But it's all about price and performance
12-05-2006, 11:49 PM
#14
6th Gear Member
Join Date: Jun 2006
Location: Maine
Posts: 5,693
RE: GT40 vs. Cobra
ORIGINAL: OneFine89Mustang
gt40 flows alot better
gt40 flows alot better
I assume you must mean the intake because the Explorer heads are GT40s.
12-06-2006, 01:01 AM
#16
6th Gear Member
Join Date: Feb 2006
Location:
Posts: 6,936
RE: GT40 vs. Cobra
how would I go about porting a cobra intake? or finding someone to port it?
ORIGINAL: samseed101
What, the heads or the intake? Because from about 4700 RPM to 6100 RPM the Explorer intake manifold outperforms the FRP GT-40 intake manifold. And from 2200 RPM up to 4700 or so it's almost always within 1 HP on the dyno. You can't beat it for the price. Especially if you port it.
I assume you must mean the intake because the Explorer heads are GT40s.
ORIGINAL: OneFine89Mustang
gt40 flows alot better
gt40 flows alot better
I assume you must mean the intake because the Explorer heads are GT40s.
12-06-2006, 01:03 AM
#17
2nd Gear Member
Thread Starter
Join Date: Jun 2006
Posts: 359
RE: GT40 vs. Cobra
ORIGINAL: samseed101
The GT40 heads have a lower compression though, so unless you're running forced induction, you may want to get them milled to at least bring the compression up to 9.5:1.
The GT40 heads have a lower compression though, so unless you're running forced induction, you may want to get them milled to at least bring the compression up to 9.5:1.
12-06-2006, 01:19 AM
#19
5th Gear Member
Join Date: Jul 2006
Location: Alton, New Hampshire
Posts: 2,518
RE: GT40 vs. Cobra
ORIGINAL: ttocs
how would I go about porting a cobra intake? or finding someone to port it?
how would I go about porting a cobra intake? or finding someone to port it?
ORIGINAL: samseed101
What, the heads or the intake? Because from about 4700 RPM to 6100 RPM the Explorer intake manifold outperforms the FRP GT-40 intake manifold. And from 2200 RPM up to 4700 or so it's almost always within 1 HP on the dyno. You can't beat it for the price. Especially if you port it.
I assume you must mean the intake because the Explorer heads are GT40s.
ORIGINAL: OneFine89Mustang
gt40 flows alot better
gt40 flows alot better
I assume you must mean the intake because the Explorer heads are GT40s.
1. you can cut the upper plennum open and port it then tig weld it back together( not a good idea IMO )
2. Have it extrude honed, wich is what i want to dowhen i get my explorer intake.( and the better choice IMO )
deanzawistowski Date 12/5/2006 11:03:46 PM
ORIGINAL: samseed101
Whats forced induction?
ORIGINAL: samseed101
The GT40 heads have a lower compression though, so unless you're running forced induction, you may want to get them milled to at least bring the compression up to 9.5:1.
Whats forced induction?
12-06-2006, 01:22 AM
#20
2nd Gear Member
Thread Starter
Join Date: Jun 2006
Posts: 359
RE: GT40 vs. Cobra
ORIGINAL: samseed101
you may want to get them milled to at least bring the compression up to 9.5:1.
you may want to get them milled to at least bring the compression up to 9.5:1.