GT-40 heads and more

Shotgun28 · 01-17-2001, 08:30 AM

Well I think I have decided to go slightly mild to medium modded and from what I have read from other stangers I am going to go with the GT-40P heads and down the road get them ported, but after looking through my recent mags, I cannot find a place to get these heads, I will be getting the Cobra intake and a larger T/B like 65MM, I think 70 may be too large for my application and then get a 73 C & L MAF or a Pro -M 77, I think this combo would work well with some 1.6 Roller Rockers and a new cam(still trying to decide) But back to my original question where can I get those heads and what is the best price you have found on them, I saw an ad for some that were stage one ported already for $750, would this be a good choice? Sorry so long,and thank you in advance.And to add, I have heard from Bow Tie eater's post that some were looking at the Trick Flow Street intake, should I consider this as well, what is that intake good up to compared to Cobra's 400 h.p.? And to add I did decide on getting the red alum, ASP pulley's to add color to my engine compartment, and have decided to get the Lentech Street Terminator, just not sure whether I will get it with the 12" or 10" converter. Man I better stop while I am ahead..

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91 LX Convertible Gray on Red B&M Shift improver kit, March underdrive pulley's Richmond 3.73 gears, 1 5/8 Flowtech long tube Headers and off road h-pipe, Flowmaster 2-chamber cat-back with S.S exhaust, MSD 6A Ignition with coil,Cap and rotor, Taylor Pro wires, K&N 12" conical filter system, Jet stage 2 performance chip and Lentech Street Terminator plus on it's way...

Shotgun28 · 01-17-2001, 08:49 AM

Hey cool, I just became a senior member with this post, yee hawwwwwww!Sorry had to do that.....

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91 LX Convertible Gray on Red B&M Shift improver kit, March underdrive pulley's Richmond 3.73 gears, 1 5/8 Flowtech long tube Headers and off road h-pipe, Flowmaster 2-chamber cat-back with S.S exhaust, MSD 6A Ignition with coil,Cap and rotor, Taylor Pro wires, K&N 12" conical filter system, Jet stage 2 performance chip and Lentech Street Terminator plus on it's way...

Dangerous Dave · 01-17-2001, 09:10 AM

Hmmmm...Sounds like I may have to watch for you this summer...

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1988 GT-under construction

Skankin · 01-17-2001, 09:22 AM

www.mustangparts.com $99bare/each www.karkraft.com $129 bare/each, 499 complete set www.stangparts.com has some on ebay: http://cgi.ebay.com/ebaymotors/aw-cg...086210&r=0&t=0 $250 bare set www.centralcoastmustang.com $640 complete, improved springs, and drilled for thermactor hookup. http://www.panhandleperformance.com/heads.html $795 stage I

I bought mine bare. You can get oem valves for $75 (PAW), or manley race flows for $195 (summit).

The crane 2030 is a great street cam, and matches the 1.6 rockers. (216/220,112lsa,.533/.544).

Larger LSA = broader torque band
mild/moderate duration = good cylinder pressure, idle, & low end
high lift = good flow (heads will flow to .600", so don't let anyone tell you it's not necessary).
split duration = helps out the exhaust... may not be necessary with porting, but I think it's generally good with cats.
Price = $210 for the kit (including springs, retainers, etc.).

For a little more money, a mild comp cam extreme grind would be great. They have lots of lift, yet a relatively small advertised duration... so good flow, pressure, etc... If budget is a concern, I think the extra money would be better spent in head work though.

Also, you could get a dremel (what I did), and do some mild cleanup yourself. There's a really good home port article on www.fordmuscle.com

I agree, the 70 mm TB would trade off some low end for the top end... probably not worth it. You might consider a pro-M bullet 75mm... I've seen them advertised for $180.

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'89.5 5L LX, hatch, Medium Canyon Red, 155K Km (No winters), 5sp, 3.08, GT interior, a/c, Alpine CD, K/N, Crane PS91, Walbro 190 LPH, March Pulleys, Mr. Gasket 180 therm (HP balanced), 3 core rad, MarkVIII fan, Variflow controller, Polygraphite front bushings, FMS-5300B springs, 6 KYB's, 73mm Calipers, Maximum Motorsport 4pt chassis brace, Western Motorsport Racing's Sub-frame connectors. Re-ringed bottom end, conv. motor mounts, melling oil pump, FMS-C50 waterpump, GT40P heads (blended, polli

Shotgun28 · 01-17-2001, 10:09 AM

Yes, thank you for the info. I was just wondering how well they work for the cost. referring to the GT-40P's and are they worth it or would it be better to look for something else? And has anyone in here worked with Central Coast >>>>>Good or bad rep? Thanks again

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91 LX Convertible Gray on Red B&M Shift improver kit, March underdrive pulley's Richmond 3.73 gears, 1 5/8 Flowtech long tube Headers and off road h-pipe, Flowmaster 2-chamber cat-back with S.S exhaust, MSD 6A Ignition with coil,Cap and rotor, Taylor Pro wires, K&N 12" conical filter system, Jet stage 2 performance chip and Lentech Street Terminator plus on it's way...

Josh91 · 01-17-2001, 11:20 AM

I picked up my P's from Bill Klein, real great guy to work with. I got them for $525 assmebled with stainless valves and Comp Cams hardware and they were milled .030 also. Check out my sig for the rest of my combo. I really like it, but haven't really gotten a chance to run it (bad weather). I think the 70mm tb and Pro-M 77 would be overkill. I have seen the Pro-M 75 bullet for sale for $169 at Muscle Motors. The Cobra intake ought to be fine too.

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1991 Mustang GT - Cobra Intake, FMS 65mm TB, C&L 73mm MAF, GT-40P heads, Crane 2031 cam, Crane 1.7rr, Built AOD, Art Carr 2400 non-lockup converter, Transgo shift kit, BBK chrome cold air, FMS 'P' headers, Pacesetter off-road H, BBK aluminum pulleys, 2-C Flows w/ dumps, 4.10's, Steeda STB, for now...

01-17-2001, 08:30 AM	#1
Shotgun28 Registered Member Join Date: Sep 2000 Location: New Hope MN USA Posts: 276	GT-40 heads and more Well I think I have decided to go slightly mild to medium modded and from what I have read from other stangers I am going to go with the GT-40P heads and down the road get them ported, but after looking through my recent mags, I cannot find a place to get these heads, I will be getting the Cobra intake and a larger T/B like 65MM, I think 70 may be too large for my application and then get a 73 C & L MAF or a Pro -M 77, I think this combo would work well with some 1.6 Roller Rockers and a new cam(still trying to decide) But back to my original question where can I get those heads and what is the best price you have found on them, I saw an ad for some that were stage one ported already for $750, would this be a good choice? Sorry so long,and thank you in advance.And to add, I have heard from Bow Tie eater's post that some were looking at the Trick Flow Street intake, should I consider this as well, what is that intake good up to compared to Cobra's 400 h.p.? And to add I did decide on getting the red alum, ASP pulley's to add color to my engine compartment, and have decided to get the Lentech Street Terminator, just not sure whether I will get it with the 12" or 10" converter. Man I better stop while I am ahead.. ------------------ 91 LX Convertible Gray on Red B&M Shift improver kit, March underdrive pulley's Richmond 3.73 gears, 1 5/8 Flowtech long tube Headers and off road h-pipe, Flowmaster 2-chamber cat-back with S.S exhaust, MSD 6A Ignition with coil,Cap and rotor, Taylor Pro wires, K&N 12" conical filter system, Jet stage 2 performance chip and Lentech Street Terminator plus on it's way...

01-17-2001, 08:49 AM	#2
Shotgun28 Registered Member Join Date: Sep 2000 Location: New Hope MN USA Posts: 276	Hey cool, I just became a senior member with this post, yee hawwwwwww!Sorry had to do that..... ------------------ 91 LX Convertible Gray on Red B&M Shift improver kit, March underdrive pulley's Richmond 3.73 gears, 1 5/8 Flowtech long tube Headers and off road h-pipe, Flowmaster 2-chamber cat-back with S.S exhaust, MSD 6A Ignition with coil,Cap and rotor, Taylor Pro wires, K&N 12" conical filter system, Jet stage 2 performance chip and Lentech Street Terminator plus on it's way...

01-17-2001, 09:10 AM	#3
Dangerous Dave Registered Member Join Date: Sep 1999 Location: Minneapolis, MN Posts: 121	Hmmmm...Sounds like I may have to watch for you this summer... ------------------ 1988 GT-under construction

01-17-2001, 09:22 AM	#4
Skankin Registered Member Join Date: Dec 1998 Location: London, Ontario, Canada Posts: 1,349	www.mustangparts.com $99bare/each www.karkraft.com $129 bare/each, 499 complete set www.stangparts.com has some on ebay: http://cgi.ebay.com/ebaymotors/aw-cg...086210&r=0&t=0 $250 bare set www.centralcoastmustang.com $640 complete, improved springs, and drilled for thermactor hookup. http://www.panhandleperformance.com/heads.html $795 stage I I bought mine bare. You can get oem valves for $75 (PAW), or manley race flows for $195 (summit). The crane 2030 is a great street cam, and matches the 1.6 rockers. (216/220,112lsa,.533/.544). Larger LSA = broader torque band mild/moderate duration = good cylinder pressure, idle, & low end high lift = good flow (heads will flow to .600", so don't let anyone tell you it's not necessary). split duration = helps out the exhaust... may not be necessary with porting, but I think it's generally good with cats. Price = $210 for the kit (including springs, retainers, etc.). For a little more money, a mild comp cam extreme grind would be great. They have lots of lift, yet a relatively small advertised duration... so good flow, pressure, etc... If budget is a concern, I think the extra money would be better spent in head work though. Also, you could get a dremel (what I did), and do some mild cleanup yourself. There's a really good home port article on www.fordmuscle.com I agree, the 70 mm TB would trade off some low end for the top end... probably not worth it. You might consider a pro-M bullet 75mm... I've seen them advertised for $180. ------------------ '89.5 5L LX, hatch, Medium Canyon Red, 155K Km (No winters), 5sp, 3.08, GT interior, a/c, Alpine CD, K/N, Crane PS91, Walbro 190 LPH, March Pulleys, Mr. Gasket 180 therm (HP balanced), 3 core rad, MarkVIII fan, Variflow controller, Polygraphite front bushings, FMS-5300B springs, 6 KYB's, 73mm Calipers, Maximum Motorsport 4pt chassis brace, Western Motorsport Racing's Sub-frame connectors. Re-ringed bottom end, conv. motor mounts, melling oil pump, FMS-C50 waterpump, GT40P heads (blended, polli

01-17-2001, 10:09 AM	#5
Shotgun28 Registered Member Join Date: Sep 2000 Location: New Hope MN USA Posts: 276	Yes, thank you for the info. I was just wondering how well they work for the cost. referring to the GT-40P's and are they worth it or would it be better to look for something else? And has anyone in here worked with Central Coast >>>>>Good or bad rep? Thanks again ------------------ 91 LX Convertible Gray on Red B&M Shift improver kit, March underdrive pulley's Richmond 3.73 gears, 1 5/8 Flowtech long tube Headers and off road h-pipe, Flowmaster 2-chamber cat-back with S.S exhaust, MSD 6A Ignition with coil,Cap and rotor, Taylor Pro wires, K&N 12" conical filter system, Jet stage 2 performance chip and Lentech Street Terminator plus on it's way...

01-17-2001, 11:20 AM	#6
Josh91 Registered Member Join Date: Nov 1998 Location: Salina, KS Posts: 83	I picked up my P's from Bill Klein, real great guy to work with. I got them for $525 assmebled with stainless valves and Comp Cams hardware and they were milled .030 also. Check out my sig for the rest of my combo. I really like it, but haven't really gotten a chance to run it (bad weather). I think the 70mm tb and Pro-M 77 would be overkill. I have seen the Pro-M 75 bullet for sale for $169 at Muscle Motors. The Cobra intake ought to be fine too. ------------------ 1991 Mustang GT - Cobra Intake, FMS 65mm TB, C&L 73mm MAF, GT-40P heads, Crane 2031 cam, Crane 1.7rr, Built AOD, Art Carr 2400 non-lockup converter, Transgo shift kit, BBK chrome cold air, FMS 'P' headers, Pacesetter off-road H, BBK aluminum pulleys, 2-C Flows w/ dumps, 4.10's, Steeda STB, for now...