explorer heads

stangcrazy84 · 01-03-2004, 07:03 PM

can anyone tell me what year ford put gt 40 heads on the explorer and how to tell if it has gt 40 heads?

82 GT · 01-04-2004, 04:23 AM

I believe they were on the 96-97 Ford explorers.
You will see three bars on front of the heads that identify them as GT-40p heads.

tmoss · 01-04-2004, 12:51 PM

GT40 heads = 3 vertical bars

Gt40P heads = 4 vertical bars.

andy669 · 01-04-2004, 01:24 PM

Quote:

Originally posted by tmoss
GT40 heads = 3 vertical bars

Gt40P heads = 4 vertical bars.

Yep. Like this.

QuantumMotorsports · 01-04-2004, 01:54 PM

In addition, under the valve cover "GT40 P" is stamped and the letter P is stamped somewhere else on the head, not sure if it's under the valve cover or not.

tmoss · 01-04-2004, 02:00 PM

There is also a diagonal (down) "GTP" cast into the head flange at the lower front (rear) head bolt boss also.

82 GT · 01-04-2004, 02:30 PM

Quote:

Originally posted by tmoss
GT40 heads = 3 vertical bars

Gt40P heads = 4 vertical bars.

Yeah, I realized my mistake after I logged off last night.....sorry.

Dark_5.0 · 01-05-2004, 08:56 AM

Gee and I always thought the easiest way to tell was to see if the spark plugs went in straight or at an angle.

stangcrazy84 · 01-16-2004, 12:40 AM

thanks for all the replys

mardyn · 01-16-2004, 01:40 PM

I'm considering some upgrade for my car... looking at a new Ford Crate 351 ((Lightning 351W) with iron GT40 heads... what's up with the "P" designation... Is it significantly better in some fashion?

mardyn

Coupe50h · 01-19-2004, 06:46 PM

the p 40's have a different plug angle, and require a special header, they also have a smaller exhaust valve, but supposedly flow better than the old school irons, which have a bigger exhaust valve, like the ones i have, were pulled from an early 97 exploder, but unless your gonna port the crap out of them, dont bother with the gt-40 iro, the power gain is minimal over an e7.

01-03-2004, 07:03 PM	#1
stangcrazy84 Registered Member Join Date: Nov 2003 Location: TX Posts: 11	explorer heads can anyone tell me what year ford put gt 40 heads on the explorer and how to tell if it has gt 40 heads?

01-04-2004, 04:23 AM	#2
82 GT Import Slayer Join Date: May 1999 Posts: 2,241	I believe they were on the 96-97 Ford explorers. You will see three bars on front of the heads that identify them as GT-40p heads. __________________ '82 GT 351W (.060)Comp Cams 274* Extreme Energy cam, ported & polished heads w/ 1.94/1.60 valves 10.3:1 flat top pistons,stealth intake, Mallory dizzy,Holley 750dp carb, BBK shorties,Flowmaster exhaust,C-4 with 3700 stall converter, B&M pro shifter,8.8 rear, 4:10's, subframes, electric fan, powermaster alternator, 4 core radiator.

01-04-2004, 12:51 PM	#3
tmoss Registered Member Join Date: Mar 2003 Location: Saint Louis, MO Posts: 634	GT40 heads = 3 vertical bars Gt40P heads = 4 vertical bars. __________________ Tom (Torque) Moss 88Gt 5spd Vert, FLowmaster Catbacks, stock cam advanced 4° @ 108.5° ICL, NMRA prepped GT40P heads 1.85/1.55 valves and 1.7 rockers, MAC P headers Jet-Hot coated, 97 Exlporer intake (ported lower), TB and injectors. 277RWHP/330RWTQ (SAE). http://www.fastlanecars.com/

01-04-2004, 01:54 PM	#5
QuantumMotorsports Registered Member Join Date: Jul 2000 Location: Norman, Oklahoma, USA Posts: 597	In addition, under the valve cover "GT40 P" is stamped and the letter P is stamped somewhere else on the head, not sure if it's under the valve cover or not. __________________ Michael Black QuantumMotorsports Norman, OK 1984 LX Hatch 306 w/ TRW forged flat toppers, Comp Cams Magnum 292H, GT40P heads w/ 3 angle valve job, .550 lift springs, Angus Racing Roller Rockers, Weiand Stealth Intake, Holley 4150 650cfm carb, MAC 1 5/8 Long Tubes, Single Chamber Flowmasters, 91' T5 w/ Pro 5.0 shifter, Turbo Coupe 8.8 Rear w/ 3.55 gears, QA1 Motorsports tubular K member, no interior except steering wheel and seat. Coming soon: 6 or 8 point cage, Fuel Cell, Weld Draglites

01-04-2004, 02:00 PM	#6
tmoss Registered Member Join Date: Mar 2003 Location: Saint Louis, MO Posts: 634	There is also a diagonal (down) "GTP" cast into the head flange at the lower front (rear) head bolt boss also. __________________ Tom (Torque) Moss 88Gt 5spd Vert, FLowmaster Catbacks, stock cam advanced 4° @ 108.5° ICL, NMRA prepped GT40P heads 1.85/1.55 valves and 1.7 rockers, MAC P headers Jet-Hot coated, 97 Exlporer intake (ported lower), TB and injectors. 277RWHP/330RWTQ (SAE). http://www.fastlanecars.com/

01-05-2004, 08:56 AM	#8
Dark_5.0 Registered Member Join Date: Apr 2001 Location: Staging lane Posts: 4,337	Gee and I always thought the easiest way to tell was to see if the spark plugs went in straight or at an angle. __________________ 92' LX-Big brakes, Lots and lots of suspension, GT40X heads, Ported cobra intake, stock cam, Vortech SC trim. 00' Lightning-Stock 88'CRX-13 second ego killer

01-16-2004, 12:40 AM	#9
stangcrazy84 Registered Member Join Date: Nov 2003 Location: TX Posts: 11	thanks for all the replys

01-16-2004, 01:40 PM	#10
mardyn Registered Member Join Date: Sep 2003 Location: Irving, Texas Posts: 14	Whats the diff.. Gt40 and GT40P heads I'm considering some upgrade for my car... looking at a new Ford Crate 351 ((Lightning 351W) with iron GT40 heads... what's up with the "P" designation... Is it significantly better in some fashion? mardyn

01-19-2004, 06:46 PM	#11
Coupe50h Registered Member Join Date: Aug 2002 Location: SanAntonio, Tx Posts: 957	the p 40's have a different plug angle, and require a special header, they also have a smaller exhaust valve, but supposedly flow better than the old school irons, which have a bigger exhaust valve, like the ones i have, were pulled from an early 97 exploder, but unless your gonna port the crap out of them, dont bother with the gt-40 iro, the power gain is minimal over an e7. __________________ X-Texas highway patrol ssp 1990 coupe - exploder Gt-40 iron heads, Explorer intake, 19 lber's. E-cam. crane 1.7 rollers. 190fp. 75mm maf. 65mm tb, tubular subframe connectors, mac cai, Asp crank pulley, T-5, king cobra clutch, flowtech 1-5/8 unequals, mac X-pipe Frpp driveshaft, lakewood Lca's. race weight 3,160 12.69 @ 107.35, 1.71 60' 26x8.5 drag's 3.90 gear 13.20 @ 106.91 - 235/60/15 firestones 2.3 60' 3.27 gear

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