302 or 351 HO? Egads. - MustangForums.com

Thread Tools Search this Thread
Old 07-22-2006, 02:28 AM   #1
Thread Starter
Join Date: Jul 2006
Posts: 1
Default 302 or 351 HO? Egads.

I have a 93 mustang lx with the 2.3L 4 cyl. It is a dog and really not as much fun as I want to have. I want to put a different engine in it but am unsure as to what to put into it. I have two options. I have a 302 out of an 89 Ford F-250 or 350,and a 351 HO out of an 80s Bronco. Which would you choose?

I would mainly be using it as an everyday drive. I imagine the 302 to be ALOT better on gas than the 351, but the 302 is a little more sissy compared to the 351. Its a tough choice. basically what I want to know is which one would be easier, more cost efficient to install, again I am thinking the 302 would be cheaper and easier. But I really LOVE the 351, its a beast, and what is the fun in putting in a 302 if you could just put in the 351.

351 or 302? Both are non-efi. If I install the 351 am I basically going to have to change everything about the car? ie: suspension, transmission, front end?

Give me some ideas, money is a little tight, but I can survive on ramen noodles and bologna sandwiches.

Basically, I just want the most fun and thrills for the cheapest amount of money. There, I said it.

Let me know which will take the most amount of work, which will be the best overall, which will be the easiest for my father and I to do. He is old and I am not the best mechanic. He has the know how, I have the youth.

Thank you in advance for any info you can offer.

justplainjoe139 is offline   Reply With Quote
Old 07-24-2006, 11:04 AM   #2
4th Gear Member
Join Date: Mar 2006
Location: PA
Posts: 1,027
Default RE: 302 or 351 HO? Egads.

It wont be cheap. And if your fonds are tight.
It would be cheaper to just buy a Mustang with a 302 or 351 in it already.
You could fine 1 for around 2k to 3k used.
rwh129 is offline   Reply With Quote
Old 07-25-2006, 07:27 PM   #3
5th Gear Member
Join Date: Jun 2005
Location: Frederick, Maryland.
Posts: 2,118
Default RE: 302 or 351 HO? Egads.

sorry but I really disagree with the response above. You could do the whole swap for at most 1500. You cab probably find a junkyard motor for about 500, use 500 to rebuild it yourself then the last 500 as backup. I would really worry about the 4 cyl trans though...the torque of a 351w would eat that thing up.

I would probably go with the 302 you have...the 351w youve got is a flat tappet version. You can get plenty of power out of a 302...though I think the motor out of the f250 isnt a ho and has a different firing order than the 5.0 HO in the mustangs.
VigCS is offline   Reply With Quote
Old 08-02-2006, 05:16 PM   #4
4th Gear Member
Join Date: Jun 2006
Posts: 1,452
Default RE: 302 or 351 HO? Egads.

The 302 to 351W swap is not hard. the 4 cyl to 351 is more challenging. The 351 is much taller than the 302, especially when EFI is used. A 302 with an RPM Air Gap is VERY close if you don't use a spacer under the carb. The swap for a 351W will involve different headers than a 302, but hey...you already have to change all the exhaust being your swapping a 4 cyl. The 351 will present hood clearance problems of varying degrees depending on the intake/carb/EFI setup you use. The 302 should be ok with all but high single plane intakes (for a carb set up). I used a custom PA Racing tubular k-member on my 302 to 351 swap with dropped mounts and a 3" cowl hood to clear the TFR (EFI) intake and T.B.

You'll need a transmission/bell housing and a computer to match the motor you decide to use IF you go with EFI. I used the stock computer in my 92 for the 302 to 351 swap but had to get a SCT piggy-back to tune it correctly for the 351W. A stock T-5 doesn't like seeing much more than 300 ft.lbs. of tourque so take that into consideration. A C4 may be a better choice and will work without driveshaft mods other than replacing the trans yoke.

Suspension won't be a too big a problem, but I would recommend the V8 front struts and maybe spindles since the struts and spindles are different V8vs4 cyl. If you retain the 4cyl springs, a bump steer kit should be considered.

I think you'll find the swap will cost more than $1500, but I guess it's possible using salvage parts.

By the way, firing order for the 351W and the 302 H.O. is 1-3-7-2-6-5-4-8. A standard 302 (non-H.O. roller) is 1-5-4-2-6-3-7-8. Pay attention if you start swapping cams etc.
4Stangs is offline   Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
2010 Mustang GT, Supercharged, 8700 miles, SE Pennsylvania Galactic Mustangs For Sale 9 03-30-2017 06:44 PM
Vintage AC shop referral - frontrunner serpentine system bradleyb Classic Mustangs (Tech) 3 11-27-2015 07:50 PM
Vintage AC shop referral in los angeles bradleyb California Regional Chapter 0 10-01-2015 01:02 AM
Engine Knock 69Volunteer Classic Mustang General Discussion 1 09-30-2015 10:39 AM
Noob needs help! 86 mustang svo motor swapped to 71 5_speed carb 302 v8 jaiidutch Motor Swap Section 2 09-14-2015 10:29 AM

351, 351ho, ford, ho, intake

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

All times are GMT -5. The time now is 03:36 PM.