Ford-Rangers.com Ranger Forum HomeFord-Rangers.com Ranger Forum Home
Home Recent Topics New posts Search search Menu menu Not logged in - Login | Register
Ford-Rangers.com Ranger Forum > Ranger Engine Tech > 8 Cylinder Gasoline > GT40/GT40P/E7

Ford-rangers.com is a discussion forum, a Ranger forum for people who have questions about fixing or modifying
their Ford Rangers or people who just admire their Ranger. Please join and enjoy sharing experiences!

GT40/GT40P/E7       #: 462
 Moderated by: Mike69, MaDMaXX,
New Topic Reply
 Rate Topic 
 Posted: Mon Jan 8th, 2018 11:36 pm
PM Quote Reply
1st Post
JAMMAN

Owns A Torsen


Joined: Mon Sep 18th, 2017
Location: Grove City, Ohio USA
Posts: 6436
Name: Jim ...
Occupation: 5 axis cnc programmer ...
Interests: RBV's ...
Status: 
Offline
Reputation: 
Reputation Points: 6436
Member's Gallery
 Seen plenty on this topic in other forums.

Let's see if I understand this right.

GT40P flow better stock than the other 2, but need a spring upgrade to handle any RPM's. They have a smaller diameter exhaust valve which seems to help? (?)

GT40 can handle rpms with their springs (but upgrades are nice) BUT if you are going to port them they have more meat than the "P" heads to work with.

Ported E7's flow better than stock GT40 or GT40P, but that's about all.

Any decent brand aluminum head out flows any of the iron choices.

Additions?



____________________
00 XLT 4WD RCSB 3.GO! Jalapeño
01 XLT 2WD RC Steppie 3.0 auto Silver
The future belongs to those who show up.
Back To Top PM Quote Reply

 Posted: Tue Jan 9th, 2018 06:13 am
PM Quote Reply
2nd Post
V8 Level II
Member


Joined: Tue Dec 5th, 2017
Location: Michigan, USA
Posts: 118
Name: 
Occupation: 
Interests: 
Status: 
Offline
Reputation: 
Reputation Points: 118
Member's Gallery
 GT40P heads have a different plug angle as compared to E7, GT40 and most (all??) other 5.0 heads. That means that most exhaust manifolds/headers have a plug and/or wire clearance issue with the P's. 

One notable exception is the Torque Monster brand. These were designed from the beginning to clear both the GT40P and GT40 plug angles so they would fit all OE Explorer heads.  

[side note: The Torque Monsters were designed to tuck in very tightly to the factory iron Explorer heads. There MAY be clearance issues when used with aftermarket heads that have slightly different castings. My AFR165's required that a small amount be milled off to clear a header tube and flange.]



____________________
2003 FX4 Level II, Supercharged 5.0L V8, Headers, Duals, BW4406 manual T/C
Aussie Locker, Torsen L/S, 4.10's, Bilstein 7100 rezzies, Cadillac/Mustang rear discs, Duff traction bars
Keypad Entry, Lock LEDs, sway bar discos, Heated seats, Explorer EATC, Trip Computer and consoles

Other rides:
2016 C-MAX Energi (plug-in Hybrid)
2011 Taurus SEL (highway cruiser)
2003 Ranger 2.3L M5ODR1 Regular Cab (drudge)
Back To Top PM Quote Reply

 Posted: Sat Jan 13th, 2018 11:28 pm
PM Quote Reply
3rd Post
Dusten
Member


Joined: Sat Jan 13th, 2018
Location: Lake Goodwin, Washington USA
Posts: 614
Name: 
Occupation: 
Interests: cars, trucks, running ...
Status: 
Offline
Reputation: 
Reputation Points: 614
Member's Gallery
 As stated, the p heads are different in that they have different plugs, and require "P" specific headers. I've done a GT40P motor and a GT40 motor, both in mustangs, so header choices were more abundant.

Ultimately unless going for a sub 300whp build, I would opt for aluminum heads



____________________
2001 Ford Lightning - Built Motor - Built Trans - 2.9 Whipple - E85 - Custom Interior - 537/632 - 11.40 @ 119.6(old setup)
1968 Ford Mustang "Gold Nugget Special"
2018 Ford Mustang GT PP1
1999 Ranger
https://www.youtube.com/user/lightningdusten
Back To Top PM Quote Reply

 Posted: Sat Apr 13th, 2019 11:31 pm
PM Quote Reply
4th Post
Scrambler82
Old Bastard !


Joined: Fri Dec 22nd, 2017
Location: California USA
Posts: 2108
Name: Grev B ...
Occupation: Quality Assurance Engineer ...
Interests: Rangers, Photography, Metal Bending ...
Status: 
Offline
Reputation: 
Reputation Points: 2108
Member's Gallery
 To get in this conversation late, I searched the web to find the E7 heads are reasonably priced.

But iron heads make better low end torque... I do assume reworked iron heads, but none the less they may work better on the street.
Most iron heads used to accept a Chevy 2.02 intake and a 1.60 exhaust... but things change.

AND what about the 351W heads, anyone doing anything with them; Ford has them in the old Power Book ?

Last edited on Sat Apr 13th, 2019 11:32 pm by Scrambler82



____________________
Ltr,
2003 EDGE, Std Cab, Steppie, E4 Red, 5sp, 4x
5" SuperLift, 33" x 12.50 x 15"
Hurst Shifter
Mod'd Backrack to fit Steppie
Front and Rear Bumpers by Custom 4x4 Fabrication, OK; now Mike's Welding and Fabrication.
Working on more Mods, just need more time, longer days would work !
Back To Top PM Quote Reply

 Posted: Sun Apr 14th, 2019 12:43 am
PM Quote Reply
5th Post
black06xlt
Coal miner


Joined: Sat Nov 25th, 2017
Location: Flushing, Ohio USA
Posts: 1738
Name: 
Occupation: 
Interests: my wife my kids ford rangers ...
Status: 
Offline
Reputation: 
Reputation Points: 1738
Member's Gallery
 An all around good head is the roush Windsor jr head.



____________________
1995 ranger splash (pieces)
Back To Top PM Quote Reply

 Posted: Sun Apr 14th, 2019 09:10 am
PM Quote Reply
6th Post
Mike69

Mustang Nut


Joined: Sun Oct 22nd, 2017
Location: Horsepasture, USA
Posts: 1692
Name: Mike ...
Occupation: Semi-retired ...
Interests: Vintage Mustangs, RBV's, car shows, & woodworking ...
Status: 
Offline
Reputation: 
Reputation Points: 1692
Member's Gallery
 I am using M-6049-X306 cylinder heads w/Ford Racing 1.6 roller rockers, & a M-6250-B303 cam off of a new M-6007-X302B new Boss 302 crate motor on my 5.0 for my Mustang.




____________________
21 Bronco Sport Big Bend (Wife's DD)
05 F150 XLT Reg Cab, 2WD, 5.4L, Auto (My DD)
69 Mustang Coupe 5.0, 5 spd 9" rear(Project)
14 Kawasaki Vulcan (Wife's Toy)
Back To Top PM Quote Reply

 Posted: Sun Apr 14th, 2019 11:25 am
PM Quote Reply
7th Post
Scrambler82
Old Bastard !


Joined: Fri Dec 22nd, 2017
Location: California USA
Posts: 2108
Name: Grev B ...
Occupation: Quality Assurance Engineer ...
Interests: Rangers, Photography, Metal Bending ...
Status: 
Offline
Reputation: 
Reputation Points: 2108
Member's Gallery
 I found out that the E7 Head IS the 351W Heads. (Pictures are good) !

When I did my first Stang, a '67 Fastback GT, I blew up the 390 that came in the car and went to a 289 Hipo, the 351W Heads I used, numbers unknown, were slightly ported on the exhaust side, had the 2.02/1.60 Chebby Valve and Roller Rockers, I'm thinking Crane or Insky, added a Crower Cam, Wham-Bam... a Chebby Killer.

If I remember correctly, the 351W heads were the precursor of the GT40 heads and with a little work would flow as well if not better.

Ltr



____________________
Ltr,
2003 EDGE, Std Cab, Steppie, E4 Red, 5sp, 4x
5" SuperLift, 33" x 12.50 x 15"
Hurst Shifter
Mod'd Backrack to fit Steppie
Front and Rear Bumpers by Custom 4x4 Fabrication, OK; now Mike's Welding and Fabrication.
Working on more Mods, just need more time, longer days would work !
Back To Top PM Quote Reply

Current time is 10:41 pm Top  

Ford-Rangers.com Ranger Forum > Ranger Engine Tech > 8 Cylinder Gasoline > GT40/GT40P/E7

Users viewing this topic



PHP Version: 8.2.28
Server version: 10.6.22-MariaDB
UltraBB 2.01.01 Copyright © 2008-2025 Jim & Chris
Page processed in 0.0496 seconds (33% database + 67% PHP). 55 queries executed.