GT40 Heads
Thread Starter
|
Senior User
Joined: Jun 2014
Posts: 446
Likes: 0
From: Denton, TX
GT40 Heads
I am in the process of tearing apart and going through an 82 351w.
I am going to put in a new cam, new intake, new carb, and new exhaust.
How much benefit would I get from swapping the factory heads out with some gt40 heads?
I don't have the need or the $$ to swap in aluminum heads, I don't need a race truck. I just want to have a little more power. Are they a straight swap?
If I can find the heads for pretty cheap would it be a noticeable gain?
I am going to put in a new cam, new intake, new carb, and new exhaust.
How much benefit would I get from swapping the factory heads out with some gt40 heads?
I don't have the need or the $$ to swap in aluminum heads, I don't need a race truck. I just want to have a little more power. Are they a straight swap?
If I can find the heads for pretty cheap would it be a noticeable gain?
Tuned
Joined: Sep 2005
Posts: 437
Likes: 4
From: SE Missouri
Yes the GT40 heads will be a upgrade of about 25-30 horsepower on there own. As far as bolt on that depends if they came out on a 351 or a 302. If they came out on a 302 you will have to get the head bolt holes drilled out to 1/2", other than that they are bolt on
FTE Legend
Joined: Sep 2003
Posts: 54,118
Likes: 2,449
From: NY and VA
Some of the guys on the Crown Victoria, Grand Marquis, Marauder, and Towncar site are also using E7TZ heads. The GTs are more effective.
Trending Topics
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
The '82 351 if all stock is a low compression smog motor.. about 8.3:1, GT40s will bring that up to about 8.8-9:1 depending what version you get, some had 64cc chambers some had 60cc. These things also flow 25% better than stock so along with a cam and exhaust(the other two big factory original restrictions) you could easily be bolting on 100hp.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 6 Best Deals Available on New Fords & Lincolns Right Now
Brett Foote
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level
Verdad Gallardo
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Thread Starter
|
Senior User
Joined: Jun 2014
Posts: 446
Likes: 0
From: Denton, TX
Okay that sounds awesome.
Standard Fel Pro gaskets alright?
Also, I am using a C6 with stock torque converter... is that sufficient? Or do I really need to upgrade the TC as well? I would really rather not as this project is getting pretty expensive, haha.
Standard Fel Pro gaskets alright?
Also, I am using a C6 with stock torque converter... is that sufficient? Or do I really need to upgrade the TC as well? I would really rather not as this project is getting pretty expensive, haha.
Fleet Owner
Joined: Mar 2003
Posts: 24,724
Likes: 74
From: Blue Hill Township
Some of the guys on the Crown Victoria, Grand Marquis, Marauder, and Towncar site are also using E7TZ heads. The GTs are more effective.
Postmaster
Joined: Nov 2009
Posts: 4,575
Likes: 5
From: Broken Arrow , OK
The cam companies have TC calculators on their websites. When you go with so much cam the TC needs to be upgraded. I didn't change mine and you can really tell the tranny is fighting the motor.
Postmaster
Joined: Nov 2009
Posts: 4,575
Likes: 5
From: Broken Arrow , OK
The '82 351 if all stock is a low compression smog motor.. about 8.3:1, GT40s will bring that up to about 8.8-9:1 depending what version you get, some had 64cc chambers some had 60cc. These things also flow 25% better than stock so along with a cam and exhaust(the other two big factory original restrictions) you could easily be bolting on 100hp.
Thread
Thread Starter
Forum
Replies
Last Post
73BlackBeauty
Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W)
3
Feb 26, 2009 08:17 PM
TheNomad
Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W)
2
Jul 9, 2008 08:27 PM
Titus Smith
1973 - 1979 F-100 & Larger F-Series Trucks
3
Nov 20, 1999 11:55 PM