• Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 1994 - 1995 Specific Tech

Best Heads for stock 302

  • Thread starter Thread starter keegan.martin
  • Start date Start date Mar 25, 2021
  • 1
  • 2
Next
1 of 2 Next Last
K

keegan.martin

Member
Aug 9, 2020
80
5
18
Blissfield, Michigan
Mar 25, 2021
#1
  • Mar 25, 2021
  • #1
I am looking for the best heads to run under a complete stock 302, I heard gt40 heads but some people say the bottom end will blow if you don’t do it, I might throw a small cam in there but nothing huge, or should I just resurface the stock heads?
 

General karthief

wonder how much it would cost to ship you a pair
20+ Year Stangneter
Aug 25, 2016
27,923
10,569
203
polk county florida
Mar 25, 2021
#2
  • Mar 25, 2021
  • #2
I love the internet, most of the advice given by anonymous keyboard cowboys is stupid,
Stock bottom end and gt40 heads are fine, factory did it so it works, the factor here is budget, use and mechanical ability.
So how nice, pretty, fast can you afford and what is your mechanical ability.
 

revhead347

Apparently my ex-husband made that mistake.
20+ Year Stangneter
Jun 14, 2004
9,300
1,642
214
Acworth, GA
Mar 25, 2021
#3
  • Mar 25, 2021
  • #3
The bottom end might blow if you put GT40 heads on it, and a 300 shot of nitrous.

Kurt
 
Reactions: Mustang5L5 and 7991LXnSHO

HemiRick

I'd be looking at jacking under the house
Jun 28, 2020
723
272
73
Memphis TN
Mar 25, 2021
#4
  • Mar 25, 2021
  • #4
To do all that work for 30HP, is a waste IMHO, thats all GT40 heads are worth.
 
Reactions: Bird76Mojo and Ryuk

Potomus Pete

I'm still waiting for the fully nude shots
5 Year Member
Mar 7, 2019
3,308
1,223
153
Sarasota Florida
Mar 25, 2021
#5
  • Mar 25, 2021
  • #5
Hard to find GT 40 heads these days for a couple hundred. I see them for four hundred here in Sarasota
 

revhead347

Apparently my ex-husband made that mistake.
20+ Year Stangneter
Jun 14, 2004
9,300
1,642
214
Acworth, GA
Mar 25, 2021
#6
  • Mar 25, 2021
  • #6
I just sold a set of GT40 heads with the Cobra cam for like $150 on here recently.

Kurt
 

General karthief

wonder how much it would cost to ship you a pair
20+ Year Stangneter
Aug 25, 2016
27,923
10,569
203
polk county florida
Mar 25, 2021
#7
  • Mar 25, 2021
  • #7
HemiRick said:
To do all that work for 30HP, is a waste IMHO, thats all GT40 heads are worth.
Click to expand...
That would depend on what the end goal is, they are really good for low end torque when combined with explorer intake and throttle body.
 

HemiRick

I'd be looking at jacking under the house
Jun 28, 2020
723
272
73
Memphis TN
Mar 25, 2021
#8
  • Mar 25, 2021
  • #8
The explorer intake and its bigger passages removes low end torque.
 

7991LXnSHO

wanna catch the space herp
10 Year Member
Sep 1, 2010
7,387
2,745
194
Kearney, NE
Mar 25, 2021
#9
  • Mar 25, 2021
  • #9
Then why was it run in heavier trucks?
@HemiRick
 
Last edited: Mar 26, 2021

General karthief

wonder how much it would cost to ship you a pair
20+ Year Stangneter
Aug 25, 2016
27,923
10,569
203
polk county florida
Mar 25, 2021
#10
  • Mar 25, 2021
  • #10
7991LXnSHO said:
Then why as it run in heavier trucks?
@HemiRick
Click to expand...
It's the sum of the parts, I was inclined to defend my post but in the 96 explorer 5.0 the torque figure is lower than say, my 89 5.0, that said I didn't compare where those torque numbers were made, again it's the sum of the parts.
 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
43,254
17,937
224
Massachusetts
Mar 25, 2021
#11
  • Mar 25, 2021
  • #11
If you throw aftermarket heads on a stock 302, it’s not really a stock 302 is it now?

What you do all depends on your budget. A lot of folks throw aftermarket heads, cam and intake and intake on a stock , healthy, 302 bottom end and it survives just fine.

really the deciding factor is your budget
 
Reactions: General karthief

HemiRick

I'd be looking at jacking under the house
Jun 28, 2020
723
272
73
Memphis TN
Mar 25, 2021
#12
  • Mar 25, 2021
  • #12
The intake runners in a stock Mustang intake are small and create a high velocity intake charge, this makes lotsa low end torque.....too much IMHO...getting traction w this intake in 1st and 2nd especially w a 3.08 or more gear is hard. The explorer intakes bigger passages slow down the intake velocity and cost low end torque, but it gives you more upper end HP. A truely useful tradeoff.
 
M

mostsmooth

Active Member
Nov 12, 2002
270
26
29
Mar 26, 2021
#13
  • Mar 26, 2021
  • #13
Gt40 heads went on my 95 at around the 15k mile mark i think, along with upper and lower intake, cam, a supercharger, and some other bits. Supercharger broke at about 140k, but as far as I know, the bottom end is fine.
 
K

keegan.martin

Member
Aug 9, 2020
80
5
18
Blissfield, Michigan
Mar 26, 2021
#14
  • Mar 26, 2021
  • #14
General karthief said:
I love the internet, most of the advice given by anonymous keyboard cowboys is stupid,
Stock bottom end and gt40 heads are fine, factory did it so it works, the factor here is budget, use and mechanical ability.
So how nice, pretty, fast can you afford and what is your mechanical ability.
Click to expand...
I have about 3k to work with and i can do anything mechanical wise
 
K

keegan.martin

Member
Aug 9, 2020
80
5
18
Blissfield, Michigan
Mar 26, 2021
#15
  • Mar 26, 2021
  • #15
Mustang5L5 said:
If you throw aftermarket heads on a stock 302, it’s not really a stock 302 is it now?

What you do all depends on your budget. A lot of folks throw aftermarket heads, cam and intake and intake on a stock , healthy, 302 bottom end and it survives just fine.

really the deciding factor is your budget
Click to expand...
i have about 3k so i’m not really sure what I could do with it or what I should do with it
 
K

keegan.martin

Member
Aug 9, 2020
80
5
18
Blissfield, Michigan
Mar 26, 2021
#16
  • Mar 26, 2021
  • #16
mostsmooth said:
Gt40 heads went on my 95 at around the 15k mile mark i think, along with upper and lower intake, cam, a supercharger, and some other bits. Supercharger broke at about 140k, but as far as I know, the bottom end is fine.
Click to expand...
now my motor is at 150k so do you think the bottom end would even hold up at that point?
 
M

mostsmooth

Active Member
Nov 12, 2002
270
26
29
Mar 26, 2021
#17
  • Mar 26, 2021
  • #17
keegan.martin said:
now my motor is at 150k so do you think the bottom end would even hold up at that point?
Click to expand...
I am the wrong person to ask that question, sorry. I am nowhere near as knowledgeable as some of these other folks here.
that being said, if you are worried if you add heads, I mean, you might as well worry even if you don't add anything.
 

2cars10

Member
Nov 12, 2020
9
1
13
Virginia
Mar 26, 2021
#18
  • Mar 26, 2021
  • #18
keegan.martin said:
I am looking for the best heads to run under a complete stock 302, I heard gt40 heads but some people say the bottom end will blow if you don’t do it, I might throw a small cam in there but nothing huge, or should I just resurface the stock heads?
Click to expand...
I think that trick flow makes some really good aluminum heads. I think the twisted wedge 170 is the value sweet spot. If you pair them with their stage one cam and a few supporting mods that should net you 300whp.
 

2cars10

Member
Nov 12, 2020
9
1
13
Virginia
Mar 26, 2021
#19
  • Mar 26, 2021
  • #19
keegan.martin said:
i have about 3k so i’m not really sure what I could do with it or what I should do with it
Click to expand...
Trick flow top end kit
 
Reactions: revhead347

HemiRick

I'd be looking at jacking under the house
Jun 28, 2020
723
272
73
Memphis TN
Mar 26, 2021
#20
  • Mar 26, 2021
  • #20
If your engine doesn't burn oil and runs fine now....no reason not to change the heads.
 
  • 1
  • 2
Next
1 of 2 Next Last
You must log in or register to reply here.

Similar threads

T
Oil burning on my recently buil 302
  • The blk67
  • May 15, 2026
  • Fox 5.0 Mustang Tech
Replies
3
Views
153
Fox 5.0 Mustang Tech May 15, 2026
Noobz347
Ford truck engine swap issues
  • keel
  • Jul 7, 2026
  • Other Auto Tech
Replies
17
Views
238
Other Auto Tech Jul 13, 2026
General karthief
J
can you use the heads off a H O 302 to put on a regular 302 engine
  • Jan H
  • Feb 25, 2026
  • Other Auto Tech
Replies
6
Views
366
Other Auto Tech May 17, 2026
nickyb
H
Forced Induction On3 Turbo Kit- Parts list NEEDED - 302 Stock Motor
  • Hirothecool1
  • Feb 27, 2026
  • Fox 5.0 Mustang Tech
  • 2
Replies
21
Views
1K
Fox 5.0 Mustang Tech Mar 7, 2026
slow84lx
S
W
I have some 4.6 questions.
  • whiskerz
  • Nov 14, 2025
  • SN95 4.6L Mustang Tech
Replies
5
Views
285
SN95 4.6L Mustang Tech Nov 25, 2025
squeak93
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 1994 - 1995 Specific Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?