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GT40 P Explorer Heads by Ford
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3 40990
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Recommended By Average Price Average Rating
100% of reviewers $456.67 6.7
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Description: GT40P Iron heads offer a significant increase in HP compared to stock castings.
GT40P heads are a revised designed of the Cobra GT40 iron heads, with better swirl thanks to a new chamber design and a revised plug location for improved combustion. This heads outperform the GT40 iron heads.

Special headers might be required.

Buy at: www.ebaymotors.com
SHELBY GT 350 Member
 
Posts: 5,176
Registered: April 2002
Location: Mexico



Author
5literChevyEatr

Made Member

Registered: July 2003
Location: NYC
Posts: 349
Review Date: 1/1/2004 Would you recommend the product? Yes | Price you paid?: $520.00 | Rating: 5 

 
Pros: very noticable power
Cons: loose a lil low end torque, stock valve train should be upgraded after purchase of these heads

these heads are great i had a 15.6 92 GT with these heads, GT40 intake, and 1,7 rollers i did 14.0, so i gained a lot and thier dirt cheap, very good head if u want a 14 sec commuter
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GhostDog 5.0

Top Dog

Registered: August 2002
Location: Edinburg
Posts: 4837
Review Date: 1/10/2004 Would you recommend the product? Yes | Price you paid?: $250.00 | Rating: 5 

 
Pros: Cheap, solid and very port-able
Cons: Heavy and slightly small valves compared to trickflow, but major $$ there

These heads open up a lot of horsepower, especially if you have done the intake, throttle body, and complete exhaust.

These heads give good horsepower up to around 5000 rpm. You spend more $$ on the beer, gaskets, bolts and silicone than on the heads practically.

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89 GT Hatch: Custom M90 Supercharged w/ Ported Trickflow Trackheat Heads, Stage 1 cam, Streetheat lower / Sheet metal upper, Tweecer RT & PLX Wideband, 75mm TB, 1.6 Roller rockers, 3.73s, MSD 6a, Canton 7qt Pan+ Windage tray, 36LB Injectors, 200 amp Alternator, 75mm Pro-Mas MAF, 190lph fuel pump,Spec Stage 1 Clutch,SouthSide LCA's, Pro 5.0 Shifter, Steeda CC Plates / Springs, FMS Aluminum Driveshaft, New T5 w/ 2.95 first gear, Underdrive pullies, Zirgo 3300Cfm Elec. Fan, AFCO alum. radiator
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Midnight21

Made Member

Registered: February 2013
Location: Atlanta
Posts: 356
Review Date: 5/18/2013 Would you recommend the product? Yes | Price you paid?: $600.00 | Rating: 10 

 
Pros: Cast Iron for the daily driver and long trips
Cons: heavier than aluminum

I bought them already ported and milled so it was perfect for my application. I needed VERY durable cast iron heads and these added lots of HP to my set up. I have peace of mind taking trips and in the severe heat, it will be the last thing to warp or go bad when an issue arises in the cooling department.

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'90 lx hatch - Midnight Metallic
-Milled/Ported - Gt40p_Cobra Intake - "Ecam" -280rwhp_319rwtrq- w/ AC climate control
Custom Tune Chip with all bolt on's, including electric fan. pulleys - 5spd - 3:55 gears
High Velocity Stage Down - 83mm Pro-M, 73mm bbk tube, 65mm TB
...daily driven and pinching ponies ain't cheap.
Little oil pump shafting and lifter tappin' ass in
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