GT-40 heads and more

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.

------------------
'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

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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