Notices
1978 - 1996 Big Bronco  
Sponsored by:
Sponsored by:

302 to 351...quick question

Thread Tools
 
Search this Thread
 
Old Oct 18, 2006 | 08:10 PM
  #1  
wildjon300ci's Avatar
wildjon300ci
Thread Starter
|
Posting Guru
20 Year Member
Joined: Jun 2001
Posts: 1,208
Likes: 0
From: Conyers
302 to 351...quick question

When changing from a 302 to a 351, a computer change (and for AOD a flexplate) is all that's neeeded?
(AKA same motor mounts, wiring harness still connects the same?)
Also, will an EFI intake bolt up to Edelbrock Performer heads?
 

Last edited by wildjon300ci; Oct 18, 2006 at 08:19 PM.
Reply
Old Oct 19, 2006 | 10:15 AM
  #2  
Kemicalburns's Avatar
Kemicalburns
Hotshot
20 Year Member
Liked
Joined: Jul 2002
Posts: 14,285
Likes: 12
From: Bend,OR
the efi will bolt up to those heads fine. just know that the 302 intake and the 5.8 intake are not the same. the 5.0 intake also will not fit on the 5.8 motor.

you have everything else correct.
 
Reply
Old Oct 23, 2006 | 12:45 PM
  #3  
wildjon300ci's Avatar
wildjon300ci
Thread Starter
|
Posting Guru
20 Year Member
Joined: Jun 2001
Posts: 1,208
Likes: 0
From: Conyers
Are you saying that the upper manifold won't fit a 5.8 lower intake? I know that the lower intakes aren't interchangable because of the 351's deck height and it being wider.
 
Reply
Old Oct 24, 2006 | 08:21 AM
  #4  
Kemicalburns's Avatar
Kemicalburns
Hotshot
20 Year Member
Liked
Joined: Jul 2002
Posts: 14,285
Likes: 12
From: Bend,OR
that is correct. the 5.0 uses square bore while the 5.8 is round. I saw a 5.8 stock upper on ebay for cheap and came with the lower as well for under $80 if i recall. or get one from a wrecking yard. any 88-96 upper/lower 5.8 will work for ya
 
Reply
Old Oct 24, 2006 | 10:17 AM
  #5  
wildjon300ci's Avatar
wildjon300ci
Thread Starter
|
Posting Guru
20 Year Member
Joined: Jun 2001
Posts: 1,208
Likes: 0
From: Conyers
Thanks
 
Reply
Old Oct 25, 2006 | 11:08 PM
  #6  
LedheadELH's Avatar
LedheadELH
More Turbo
Joined: Nov 2004
Posts: 590
Likes: 1
From: in the woods of Maine!
I'm pretty sure the upper intake for the newer 5.0's in the mustangs, have the round ports too.
 
Reply
Old Oct 26, 2006 | 10:09 AM
  #7  
Kemicalburns's Avatar
Kemicalburns
Hotshot
20 Year Member
Liked
Joined: Jul 2002
Posts: 14,285
Likes: 12
From: Bend,OR
nope, the only round intake other then the 5.8 stock manifold is the Gt40 version found on the lightnings some cobra's and explorers.
 
Reply
Old Oct 26, 2006 | 11:09 AM
  #8  
LedheadELH's Avatar
LedheadELH
More Turbo
Joined: Nov 2004
Posts: 590
Likes: 1
From: in the woods of Maine!
O...maybe it was a trick flow setup then.....a couple friends of mine that were running Fox's had round ports, on 5.0, one of em' was a 347 stroker....and yes they were round, because I SAW them.....but I could've sworn one looked like it was a stock piece.....I dunno, maybe that one was trick flow too...?
 
Reply
FTE Stories

Ford Trucks for Ford Truck Enthusiasts

story-0

This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level

 Verdad Gallardo
story-1

Top 10 Fords at 2026 Carlisle Ford Nationals

 Joe Kucinski
story-2

3 Best / 3 Worst Parts of Modern Ford Ownership

 Brett Foote
story-3

10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches

 Pouria Savadkouei
story-4

Every 2026 Ford Engine Explained

 Brett Foote
story-5

10 Ugly Ford Trucks That We Still Kinda Love

 Joe Kucinski
story-6

10 Things Every Truck Owner NEEDS (2026 Edition)

 Michael S. Palmer
story-7

Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath

 Verdad Gallardo
story-8

Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

 Joe Kucinski
story-9

2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

 Brett Foote
Old Oct 26, 2006 | 01:08 PM
  #9  
bronco521's Avatar
bronco521
Elder User
Joined: Jul 2006
Posts: 688
Likes: 0
From: right here in michigan
seems like the cobra upper had round ports too.trickflows are a rectangular port.
 
Reply
Old Oct 26, 2006 | 01:35 PM
  #10  
LedheadELH's Avatar
LedheadELH
More Turbo
Joined: Nov 2004
Posts: 590
Likes: 1
From: in the woods of Maine!
then it may have been cobra...I don't know....all I know is that they were fricken round man!...lol....not a big fan of fox's..even though they are my friend's..they are fast as crap, but I just don't like the body....so I just kinda nod and say "Yup".....know what I mean!
 
Reply
Old Oct 26, 2006 | 01:42 PM
  #11  
bronco521's Avatar
bronco521
Elder User
Joined: Jul 2006
Posts: 688
Likes: 0
From: right here in michigan
the fox's aren't that bad.just kinda chintzy compared to the newer stangs.they held up well considering they were designed in the late 70's.they're alot lighter than the newer ones.
 
Reply




All times are GMT -5. The time now is 12:04 AM.

story-0
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level

Slideshow: The VelociRaptor Expedition gains a lift, upgraded suspension, Brembo brakes, and trail-ready equipment while retaining the stock 440-horsepower EcoBoost V6.

By Verdad Gallardo | 2026-06-12 11:01:55


VIEW MORE
story-1
Top 10 Fords at 2026 Carlisle Ford Nationals

Slideshow: Top 10 Fords at 2026 Ford Nationals

By Joe Kucinski | 2026-06-09 11:10:08


VIEW MORE
story-2
3 Best / 3 Worst Parts of Modern Ford Ownership

Based on years of owning multiple modern Ford products.

By Brett Foote | 2026-06-09 10:53:36


VIEW MORE
story-3
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches

SPONSORED: From muddy boots to rain-soaked cargo, these upgrades address some of the most common frustrations Ford truck owners face every day.

By Pouria Savadkouei | 2026-06-08 18:50:34


VIEW MORE
story-4
Every 2026 Ford Engine Explained

Here's everything you need to know about every Ford engine available for the 2026 model year.

By Brett Foote | 2026-06-05 12:58:01


VIEW MORE
story-5
10 Ugly Ford Trucks That We Still Kinda Love

Slideshow: 10 ugly Ford trucks that we still kinda love.

By Joe Kucinski | 2026-06-03 09:51:16


VIEW MORE
story-6
10 Things Every Truck Owner NEEDS (2026 Edition)

Slideshow: the best gifts for dads & grads

By Michael S. Palmer | 2026-06-03 15:43:58


VIEW MORE
story-7
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath

Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.

By Verdad Gallardo | 2026-06-03 11:38:36


VIEW MORE
story-8
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

Slideshow: 10 most expensive Ford trucks ever sold on Bring a Trailer.

By Joe Kucinski | 2026-05-27 16:24:34


VIEW MORE
story-9
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

Here's everything that has changed for the latest model year.

By Brett Foote | 2026-05-27 16:17:28


VIEW MORE