• Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech

351w into a 91gt

  • Thread starter Thread starter Boosted93Notch
  • Start date Start date Nov 20, 2007
B

Boosted93Notch

New Member
May 31, 2004
7
0
0
NEW JERSEY
Nov 20, 2007
#1
  • Nov 20, 2007
  • #1
i know it can be done but i need to know exactly what parts are needed to drop a 351w into my 91gt. i also would like to know what kinda power can the stock 351 crank and rods hold, plus what kinda power can the block itself withhold any help would be greatly apreciated
 

85ragtop

BTW, I like dudes.
10 Year Member
Nov 29, 1999
823
475
123
NC
Nov 20, 2007
#2
  • Nov 20, 2007
  • #2
This falls under 5.0 tech.
Thread moved.
 

vristang

15 Year Member
Mar 31, 2005
4,933
101
124
Seattle
Nov 20, 2007
#3
  • Nov 20, 2007
  • #3
http://www.freewebs.com/vristang/fox351wswapfaq.htm

If you have more specific questions... feel free to post them...

jason
 
B

Boosted93Notch

New Member
May 31, 2004
7
0
0
NEW JERSEY
Nov 20, 2007
#4
  • Nov 20, 2007
  • #4
are ported gt40 irons to small of a head for a 351
 

vristang

15 Year Member
Mar 31, 2005
4,933
101
124
Seattle
Nov 20, 2007
#5
  • Nov 20, 2007
  • #5
a little bit....

but, whether or not they are a valid option will depend on your goals...
 
B

Boosted93Notch

New Member
May 31, 2004
7
0
0
NEW JERSEY
Nov 20, 2007
#6
  • Nov 20, 2007
  • #6
i am only lookin at like 300-400hp. i have the heads already cause i was gonna redo a 320 but then was lokin at the price differences so im kinda stuck in the middle. could using ported gt 40s hurt anything. i was gonna use a cobra intake a ecam 1.7 rockers 70mm t body and ported gt40s on my 302 then possibly a 50-100 shot on top of that
 

squeak93

15 Year Member
Jun 2, 2005
2,265
363
164
Joplin, Missouri
Nov 20, 2007
#7
  • Nov 20, 2007
  • #7
Do the 351. Use the gt40's for now. Save up and buy a nice set of afr 205s later. I am doing the same build with 74 351 heads that will be ported. Won't get me my final goal at first but will still make a respectable runner in the mean time. Do the 351, you will be more happy in the end.

Oh, and use Jason's site, it will outline everything you need to do from top to bottom. Real good info there. Even has part #'s on some swap parts needed. (i think, if not let me know and I have them)
 

vristang

15 Year Member
Mar 31, 2005
4,933
101
124
Seattle
Nov 20, 2007
#8
  • Nov 20, 2007
  • #8
boosted,
The gt40's won't hurt anything...
(but the e-cam my cause some issues with idle and low rpm...)

Heck, I ran stock E7's on my 351w for a while...
I still liked driving it, and it was more fun than the 302 ever was... lol

jason
 
B

Boosted93Notch

New Member
May 31, 2004
7
0
0
NEW JERSEY
Nov 21, 2007
#9
  • Nov 21, 2007
  • #9
one of the main reasons i was goin wit the ecam is so i can get it through emisions . what would be another good cam to use. i honestly would like to go custom
 

squeak93

15 Year Member
Jun 2, 2005
2,265
363
164
Joplin, Missouri
Nov 21, 2007
#10
  • Nov 21, 2007
  • #10
Custom is best bet but if your having to deal with emissions, then you may want to look the laws up. I believe that you have the have the orig equipment the the car the motor came from was equiped with from the factory. Again, check your local laws before you sink an ton of money into something you can license.
 
B

Boosted93Notch

New Member
May 31, 2004
7
0
0
NEW JERSEY
Nov 21, 2007
#11
  • Nov 21, 2007
  • #11
yea i didnt even think about that man does that suck lol i wonder if a 351 can pass as a 302 with a sniffer test
 
You must log in or register to reply here.

Similar threads

H
Drivetrain 6R80 to t56 swap
  • Holymoses
  • Apr 25, 2026
  • Fox 5.0 Mustang Tech
Replies
4
Views
204
Fox 5.0 Mustang Tech Apr 25, 2026
AeroCoupe
Engine Forged flat top pistons from 5.0 fit a 351 build?
  • PonyGTrider
  • May 22, 2025
  • Fox 5.0 Mustang Tech
Replies
17
Views
1K
Fox 5.0 Mustang Tech Feb 1, 2026
PonyGTrider
D
Engine HO cam in non HO roller block ‘93 f150
  • DanC1993f150
  • Mar 21, 2026
  • Fox 5.0 Mustang Tech
Replies
7
Views
231
Fox 5.0 Mustang Tech Mar 29, 2026
General karthief
G
79 steering rack problems
  • garyrc
  • Mar 8, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
2
Views
113
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Mar 8, 2026
AeroCoupe
Need some camshaft guru advice on power loss from supercharger to nitrous
  • TTSaleen
  • Dec 1, 2025
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
18
Views
601
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Dec 29, 2025
revhead347
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang 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?