GT40P Heads

lakefrontlivin · December 17th, 2009, 07:39 AM

HI, Wondering if these heads are worth $300 ? These heads came off an 1996 ford explorer. The heads have a gt40p stamped on the inside. Casting number on the bottom of the heads is F77E. These heads have been vatted, steel blasted, magnafluxed, and pressure tested. Also have 3-angle valve job, new valve stem seals, and have been milled. I can purchase them for that but was wondering if they would work for me. I know that I would be limited on what headers that I could use..Would I be better off with long tube headers or the shorty ones ?
I plan on getting roller rockers..1.6 or 1.7 ??? Not sure on which to get.. A new GT40 Intake, upper and lower, Underdrive pullies, CAI, Will use stock injectors for now. I have an automatic trans and will probably go with 4.10 gears. What other upgrades would be a good match for what I have listed..? I really would like a good street car with an occassional trip to the dragstrip and not be laughed at...Not really concerned about fuel mileage as it will only be used for short trips back and forth to work..
Thanx for any input that you might have..

Tom

e3sean · December 17th, 2009, 08:18 AM

300 isnt bad for prepped and ready set of p heads that is about 300 alone in machene work. the matching explorer intake will work just fine and should bring you in the 12's with a set of gears

86_Notch · December 17th, 2009, 08:31 AM

Originally Posted by e3sean

300 isnt bad for prepped and ready set of p heads that is about 300 alone in machene work. the matching explorer intake will work just fine and should bring you in the 12's with a set of gears

lakefrontlivin · December 17th, 2009, 09:11 AM

1.6 or 1.7 rockers? Thx, Tom

If anyone would like to pm me with suggestions as to which way that they think that I should go as far as mods please feel free.

tmoss · December 17th, 2009, 09:38 AM

the Comp Cams XE270-12 cam has made good power for that combo. Make sure the springs are set up right.

lakefrontlivin · December 17th, 2009, 09:51 AM

Originally Posted by tmoss

the Comp Cams XE270-12 cam has made good power for that combo. Make sure the springs are set up right.

Thanx for the advice Tmoss.. What do you mean about the springs being setup right? Should I bring them to a shop and maybe install better springs? Thanx Tom

flattusmaximus78 · December 17th, 2009, 10:06 AM

When you select your cam, bring the cam card to a machine shop, and they can tell you what springs to buy. Worst case, you sell the old springs. I'm sure 9000 people on corral will want the old ones.

lakefrontlivin · December 17th, 2009, 03:54 PM

Well,
I bought the GT40P heads..

Now to get an intake setup next.. Thanx for the advice guys..

Tom

tmoss · December 18th, 2009, 10:08 AM

Comp cams XE series have very steep ramps and even Comp tends to not recommend enough spring to handle rpms over ~6k.

e3sean · December 18th, 2009, 02:04 PM

i think 93 mustank has a good custom cam set up for p heads and explorer intake get with him.

tmoss · December 21st, 2009, 12:25 PM

Originally Posted by e3sean

i think 93 mustank has a good custom cam set up for p heads and explorer intake get with him.

I'd expect he would have thrown that cam in the trash can. See if he'll tell you what a mistake your making with those parts..........

lakefrontlivin · December 22nd, 2009, 08:20 PM

If I stay with the stock cam in my car should I go with the 1.6 Roller rockers or the 1.7 ones ?? This would be using the stock springs on the GT40P heads..Is this an option ?? Thanx, Tom

e3sean · December 22nd, 2009, 10:49 PM

no get better springs even if your using a stock cam.

93mustank · December 22nd, 2009, 11:36 PM

Originally Posted by e3sean

i think 93 mustank has a good custom cam set up for p heads and explorer intake get with him.

Sold it all ..................

93mustank · December 22nd, 2009, 11:37 PM

Originally Posted by tmoss

I'd expect he would have thrown that cam in the trash can. See if he'll tell you what a mistake your making with those parts..........

Love you Tom

ryans88gt · December 23rd, 2009, 01:08 AM

Awesome!

is that a new car TMOSS???

tmoss · December 23rd, 2009, 08:05 AM

Originally Posted by ryans88gt

is that a new car TMOSS???

it's a 40th anniversary 2008 Shelby GT500KR that I bought last fall.......

lakefrontlivin · December 27th, 2009, 09:54 AM

Originally Posted by lakefrontlivin

1.6 or 1.7 rockers? Thx, Tom

If anyone would like to pm me with suggestions as to which way that they think that I should go as far as mods please feel free.

Hi Guys. Would 1.7 RR work with the stock cam setup and stock springs on these GT40P heads???? Thanx , Tom

93hatch · December 27th, 2009, 09:57 AM

Originally Posted by lakefrontlivin

Hi Guys. Would 1.7 RR work with the stock cam setup and stock springs on these GT40P heads???? Thanx , Tom

do you keep saying stock springs as in stock explorer springs? because theyre garbage

lakefrontlivin · December 27th, 2009, 10:12 AM

Yes stock springs as were on the GT40P heads.

I'll look into getting better ones.. I think TMoss suggested some Trickflow ones at one point.. Will I be able to run the 1.7's without any issues? Should I buy pushrod giudeplates ? Will I need new pushrods? What's agood place to maybe pickup these items up all at once ? Thank-you, Tom

December 17th, 2009, 07:39 AM	#1
lakefrontlivin Regular 1995 GT Convertible 5.0 Join Date: Nov 2009 Location: New Hampshire Posts: 107 iTrader: 0 reviews	GT40P Heads HI, Wondering if these heads are worth $300 ? These heads came off an 1996 ford explorer. The heads have a gt40p stamped on the inside. Casting number on the bottom of the heads is F77E. These heads have been vatted, steel blasted, magnafluxed, and pressure tested. Also have 3-angle valve job, new valve stem seals, and have been milled. I can purchase them for that but was wondering if they would work for me. I know that I would be limited on what headers that I could use..Would I be better off with long tube headers or the shorty ones ? I plan on getting roller rockers..1.6 or 1.7 ??? Not sure on which to get.. A new GT40 Intake, upper and lower, Underdrive pullies, CAI, Will use stock injectors for now. I have an automatic trans and will probably go with 4.10 gears. What other upgrades would be a good match for what I have listed..? I really would like a good street car with an occassional trip to the dragstrip and not be laughed at...Not really concerned about fuel mileage as it will only be used for short trips back and forth to work.. Thanx for any input that you might have.. Tom Last edited by lakefrontlivin; December 17th, 2009 at 09:49 AM.

December 17th, 2009, 08:18 AM	#2
e3sean I Post Entirely Way Too Much 1988 lx 9.68@142 Join Date: Nov 2007 Location: goldsboro NC Posts: 5,609 iTrader: 0 reviews	300 isnt bad for prepped and ready set of p heads that is about 300 alone in machene work. the matching explorer intake will work just fine and should bring you in the 12's with a set of gears __________________

December 17th, 2009, 09:38 AM	#5
tmoss Regular Join Date: Jan 2007 Location: St Louis, Mo Posts: 382 iTrader: 0 reviews	the Comp Cams XE270-12 cam has made good power for that combo. Make sure the springs are set up right. __________________ 88 GT Vert 5spd, 3:73 gears, Explorer intake/65mm TB, Explorer Ps, Manley race 1.85/1.55 valves, 1.7/1.6 stud rockers, stock cam +4 degrees, MAC Jet-Hot coated shorties. 277RWHP/330RWTQ www.fastlanecars.com http://tmossporting.0catch.com/

December 17th, 2009, 10:06 AM	#7
flattusmaximus78 I Post Entirely Way Too Much 1993 5.ohhhh 12.97 @140mph Join Date: Apr 2006 Location: Gatorland Posts: 6,122 iTrader: 3 reviews	When you select your cam, bring the cam card to a machine shop, and they can tell you what springs to buy. Worst case, you sell the old springs. I'm sure 9000 people on corral will want the old ones. __________________ 02 Pewter z28, hoosiers/lid/exhaust/spray...125mph 1993 gt Sold, already missed --Moates Quarter horse $225-- --Cobra intake $150-- --tremec 3550 bell and shifter $1100--

December 18th, 2009, 10:08 AM	#9
tmoss Regular Join Date: Jan 2007 Location: St Louis, Mo Posts: 382 iTrader: 0 reviews	Comp cams XE series have very steep ramps and even Comp tends to not recommend enough spring to handle rpms over ~6k. __________________ 88 GT Vert 5spd, 3:73 gears, Explorer intake/65mm TB, Explorer Ps, Manley race 1.85/1.55 valves, 1.7/1.6 stud rockers, stock cam +4 degrees, MAC Jet-Hot coated shorties. 277RWHP/330RWTQ www.fastlanecars.com http://tmossporting.0catch.com/

December 17th, 2009, 09:11 AM	#4
lakefrontlivin Regular 1995 GT Convertible 5.0 Join Date: Nov 2009 Location: New Hampshire Posts: 107 iTrader: 0 reviews	1.6 or 1.7 rockers? Thx, Tom If anyone would like to pm me with suggestions as to which way that they think that I should go as far as mods please feel free.

December 17th, 2009, 03:54 PM	#8
lakefrontlivin Regular 1995 GT Convertible 5.0 Join Date: Nov 2009 Location: New Hampshire Posts: 107 iTrader: 0 reviews	Well, I bought the GT40P heads.. Now to get an intake setup next.. Thanx for the advice guys.. Tom

December 18th, 2009, 02:04 PM	#10
e3sean I Post Entirely Way Too Much 1988 lx 9.68@142 Join Date: Nov 2007 Location: goldsboro NC Posts: 5,609 iTrader: 0 reviews	i think 93 mustank has a good custom cam set up for p heads and explorer intake get with him. __________________

December 22nd, 2009, 08:20 PM	#12
lakefrontlivin Regular 1995 GT Convertible 5.0 Join Date: Nov 2009 Location: New Hampshire Posts: 107 iTrader: 0 reviews	If I stay with the stock cam in my car should I go with the 1.6 Roller rockers or the 1.7 ones ?? This would be using the stock springs on the GT40P heads..Is this an option ?? Thanx, Tom

December 22nd, 2009, 10:49 PM	#13
e3sean I Post Entirely Way Too Much 1988 lx 9.68@142 Join Date: Nov 2007 Location: goldsboro NC Posts: 5,609 iTrader: 0 reviews	no get better springs even if your using a stock cam. __________________

December 23rd, 2009, 01:08 AM	#16
ryans88gt MM Fanatic Join Date: May 2007 Location: Bloomington, IL Posts: 4,737 iTrader: 0 reviews	Awesome! is that a new car TMOSS??? __________________ 88 GT CHI headed 351w 10.8 @ 125 - still figuring it out. 03 Cobra 2.3 whipple 10.7 @ 129 - sold it 04 Mach 1 12.7 @ 109 mostly stock - sold it 89 LX procharged 302 515 hp 497 ftlbs 10.7 @130 mph - sold it

December 27th, 2009, 10:12 AM	#20
lakefrontlivin Regular 1995 GT Convertible 5.0 Join Date: Nov 2009 Location: New Hampshire Posts: 107 iTrader: 0 reviews	Yes stock springs as were on the GT40P heads. I'll look into getting better ones.. I think TMoss suggested some Trickflow ones at one point.. Will I be able to run the 1.7's without any issues? Should I buy pushrod giudeplates ? Will I need new pushrods? What's agood place to maybe pickup these items up all at once ? Thank-you, Tom

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