ported GT40's, stock cam, 1.7rr's - worth it?

slo95 · 10-29-2001, 09:58 PM

thinking serious about either heads (don't have the cash for the whole deal, cam, lifters, pushrods, roller rockers, etc) or intake/tb/maf combo. Will it be worth installing the ported GT40 irons with my stock 95 cam and maybe some 1.7rr's? or skip it now, and do the intake/tb/maf until I can get heads and a cam?

93CobraR · 10-29-2001, 10:27 PM

Get the heads! I had stock GT-40s on my car with headers,4.10 gear, 1.7's and factory intake and cam and it ran a 12.9@104, then I added the intake and cam and the rear end broke on the first pass so... The heads made a big differance over the E7's that were on there.

------------------
87 GT, Cobra R's,GT-40 heads,Crane 2031,1.7's, Edelbrock intake, long tubes,BBK cold air, Mass air,pulleys,Pro 5.0, King Cobra,Lakewood Lift Bars,50/50's,subframes, 4.10's.
Best time 12.759
Best MPH 106.79
Best 60' 1.695

Visit my site at:
http://www.geocities.com/cobrar93_2000/MyPage.html

fastang · 10-30-2001, 11:55 PM

Save your cash and get a set of aluminum heads. GT40's are better than E7's but just take a look at flow #'s between them and a set of AFR's or Twisted Wedges. They also weigh a LOT less which we heavy SN95's need. You can buy the little foo foo **** like TB and MAF later.

Rebel79 · 10-31-2001, 10:42 AM

Yes save your money. GT-40 heads suck, especially ported ones. Trust me. Go with an aluminum head.

------------------
1994 Mustang Cobra
308ci, Vortech S-trim 11#, ported GT-40 heads, E-303 cam, FMS 1 5/8 headers, BBK Offroad H-pipe, 2-chamber flows, and several other goodies.
Rebel Racing. Home of Bay Area Mustangs

haulin'balz · 10-31-2001, 02:31 PM

I'd go the AFR or TFS aluminum route. Don't worry about changing the cam yet, the stock cam will get you deep into the 12's.....and don't bother w/ the intake/tb/maf until you do the heads.

------------------
'90 5.0 LX - heads, intake, cam, fuel delivery, gears, full exhaust, pulleys, ignition, drag springs, front brake upgrade, a/c delete, K&N cone filter charger.......and much more!
1/4 mile: 12.29 @115
60': 1.78

93CobraR · 10-31-2001, 09:08 PM

Thats funny, they really suck huh? Thats just why my car with them, out ran most cars with their expensive Alum. heads. GT-40 heads are a big improvement over factory heads, and for the price, it's just not worth the extra money for the little to none improvement. If you know what your doing, a good set of ported GT-40's will run with the best of them.

------------------
87 GT, Cobra R's,GT-40 heads,Crane 2031,1.7's, Edelbrock intake, long tubes,BBK cold air, Mass air,pulleys,Pro 5.0, King Cobra,Lakewood Lift Bars,50/50's,subframes, 4.10's.
Best time 12.759
Best MPH 106.79
Best 60' 1.695

Visit my site at:
http://www.geocities.com/cobrar93_2000/MyPage.html

Rebel79 · 11-01-2001, 12:01 PM

I dare you to do a dyno test from ported GT-40s against Twisted Wedge or AFR 165 heads. Then you'll how bad they suck.

Oh yeah ported GT-40's cause problems on blown cars. They don't give a consistent burn and some temperatures.

------------------
1994 Mustang Cobra
308ci, Vortech S-trim 11#, ported GT-40 heads, E-303 cam, FMS 1 5/8 headers, BBK Offroad H-pipe, 2-chamber flows, and several other goodies.
Rebel Racing. Home of Bay Area Mustangs

93CobraR · 11-01-2001, 01:19 PM

All, I'm saying is for the money you can't beat them. I had nothing but good results with mine. I only got one pass and it ran a 12.7 and the rearend broke. I think if I had it tuned and got some more runs in it would run an easy 12.2 or so, and half the people I see with high dollar motors aren't even running that. I know a few running around the same with GT-40's so they can't be all that bad.

haulin'balz · 11-01-2001, 02:13 PM

To buy Gt40's and then port them is a waste.....you'd be spending more $$$ than getting the TFS or AFR's out of the box anyway, just to get close to the same flow #'s. Just my .02

------------------
'90 5.0 LX - heads, intake, cam, fuel delivery, gears, full exhaust, pulleys, ignition, drag springs, front brake upgrade, a/c delete, K&N cone filter charger.......and much more!
1/4 mile: 12.29 @115
60': 1.78

10-29-2001, 09:58 PM	#1
slo95 Registered Member Join Date: Dec 2000 Posts: 168	ported GT40's, stock cam, 1.7rr's - worth it? thinking serious about either heads (don't have the cash for the whole deal, cam, lifters, pushrods, roller rockers, etc) or intake/tb/maf combo. Will it be worth installing the ported GT40 irons with my stock 95 cam and maybe some 1.7rr's? or skip it now, and do the intake/tb/maf until I can get heads and a cam?

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10-29-2001, 10:27 PM	#2
93CobraR Registered Member Join Date: Oct 1999 Location: Cincinnati, Ohio Posts: 1,575	Get the heads! I had stock GT-40s on my car with headers,4.10 gear, 1.7's and factory intake and cam and it ran a 12.9@104, then I added the intake and cam and the rear end broke on the first pass so... The heads made a big differance over the E7's that were on there. ------------------ 87 GT, Cobra R's,GT-40 heads,Crane 2031,1.7's, Edelbrock intake, long tubes,BBK cold air, Mass air,pulleys,Pro 5.0, King Cobra,Lakewood Lift Bars,50/50's,subframes, 4.10's. Best time 12.759 Best MPH 106.79 Best 60' 1.695 Visit my site at: http://www.geocities.com/cobrar93_2000/MyPage.html

10-30-2001, 11:55 PM	#3
fastang Registered Member Join Date: Aug 2000 Location: santa ana ca Posts: 1,349	Save your cash and get a set of aluminum heads. GT40's are better than E7's but just take a look at flow #'s between them and a set of AFR's or Twisted Wedges. They also weigh a LOT less which we heavy SN95's need. You can buy the little foo foo **** like TB and MAF later.

10-31-2001, 10:42 AM	#4
Rebel79 News Editor Join Date: Apr 1999 Location: Concord, CA Posts: 2,101	Yes save your money. GT-40 heads suck, especially ported ones. Trust me. Go with an aluminum head. ------------------ 1994 Mustang Cobra 308ci, Vortech S-trim 11#, ported GT-40 heads, E-303 cam, FMS 1 5/8 headers, BBK Offroad H-pipe, 2-chamber flows, and several other goodies. Rebel Racing. Home of Bay Area Mustangs

10-31-2001, 02:31 PM	#5
haulin'balz The Notorious One Join Date: Oct 2001 Location: NY Posts: 51	I'd go the AFR or TFS aluminum route. Don't worry about changing the cam yet, the stock cam will get you deep into the 12's.....and don't bother w/ the intake/tb/maf until you do the heads. ------------------ '90 5.0 LX - heads, intake, cam, fuel delivery, gears, full exhaust, pulleys, ignition, drag springs, front brake upgrade, a/c delete, K&N cone filter charger.......and much more! 1/4 mile: 12.29 @115 60': 1.78

10-31-2001, 09:08 PM	#6
93CobraR Registered Member Join Date: Oct 1999 Location: Cincinnati, Ohio Posts: 1,575	Thats funny, they really suck huh? Thats just why my car with them, out ran most cars with their expensive Alum. heads. GT-40 heads are a big improvement over factory heads, and for the price, it's just not worth the extra money for the little to none improvement. If you know what your doing, a good set of ported GT-40's will run with the best of them. ------------------ 87 GT, Cobra R's,GT-40 heads,Crane 2031,1.7's, Edelbrock intake, long tubes,BBK cold air, Mass air,pulleys,Pro 5.0, King Cobra,Lakewood Lift Bars,50/50's,subframes, 4.10's. Best time 12.759 Best MPH 106.79 Best 60' 1.695 Visit my site at: http://www.geocities.com/cobrar93_2000/MyPage.html

11-01-2001, 12:01 PM	#7
Rebel79 News Editor Join Date: Apr 1999 Location: Concord, CA Posts: 2,101	I dare you to do a dyno test from ported GT-40s against Twisted Wedge or AFR 165 heads. Then you'll how bad they suck. Oh yeah ported GT-40's cause problems on blown cars. They don't give a consistent burn and some temperatures. ------------------ 1994 Mustang Cobra 308ci, Vortech S-trim 11#, ported GT-40 heads, E-303 cam, FMS 1 5/8 headers, BBK Offroad H-pipe, 2-chamber flows, and several other goodies. Rebel Racing. Home of Bay Area Mustangs

11-01-2001, 01:19 PM	#8
93CobraR Registered Member Join Date: Oct 1999 Location: Cincinnati, Ohio Posts: 1,575	All, I'm saying is for the money you can't beat them. I had nothing but good results with mine. I only got one pass and it ran a 12.7 and the rearend broke. I think if I had it tuned and got some more runs in it would run an easy 12.2 or so, and half the people I see with high dollar motors aren't even running that. I know a few running around the same with GT-40's so they can't be all that bad.

11-01-2001, 02:13 PM	#9
haulin'balz The Notorious One Join Date: Oct 2001 Location: NY Posts: 51	To buy Gt40's and then port them is a waste.....you'd be spending more $$$ than getting the TFS or AFR's out of the box anyway, just to get close to the same flow #'s. Just my .02 ------------------ '90 5.0 LX - heads, intake, cam, fuel delivery, gears, full exhaust, pulleys, ignition, drag springs, front brake upgrade, a/c delete, K&N cone filter charger.......and much more! 1/4 mile: 12.29 @115 60': 1.78