I have a 93ford f-150 with an 4.9inline 6 and would like to swich over to a 1990 fuelinjected 302 mustang motor is it possible and what major changes would i have to do.

 

This is not a particularely good swap. If you are going to go to the trouble of pulling the six in favor of the V8, put a 351 in it.The 302 might actually feel doggy when compared to the 300 six in that the six produces it's peak torque approx. 1,000 rpm lower. I have a 95 F150 4X4 with a 5.0 litre, HUGE mistake in not opting for the 5.8. If you insist on the 5.0, I would run a 3.91:1 or steeper gear. If you don't believe me, drive a 5.0 V8 F150 and compare it to your six!

 

My shop has done this change before, with the Mustang GT motor, and it was a dog. The Mustang GT 302 just doesn't have the bottom end torque that even the truck 302 has. If you don't already have at least a 3.73 gear in that truck, I would not recommend the Mustang 302. A 351 would be a better choice.

 

been there and wouldn't go there again. as the above posts stated, keep 300 or go to 351. if you really want nuts, go to 460!!.

 

Definatly either build the Six or go 351W, the 302 just doesn't have the torque to compete with either, a good cam, headers, 19# injectors, port and polish, and 1.94/1.60 SBC valves, and your Six will be making ~200 horses and ~300 ft/lbs, it might not pass emissions though, mine puts out 233 hp@4500, and 330ft/lbs@2000-2500, plenty to make a 302 look silly, and, I'm running a stock 1bbl for the moment.... With my upcoming twin turbo setup, at least 300 horsepower is expected with it running on low-test gas, with 15 psi of boost and race fuel, 400 should be possible(yes, I do have a forged crank.) Now, do the same to a 351W, and 600 RWHP is possible, but the six will have more torque at lower revs.
Evan MacDonald
82 F100 FlareSide 2wd
HD 300-6 9.5:1 CR
Clifford 270H cam
Hedman Hedder
SBC valved 66 240 head
Headlight Relays - Delanty Style
NP435(6.69 low)
3.55 Geared ARB'd 9"
31x10.50/15 Cooper Discoverer LT's

 

WOW i am looking to make the same swap but after reading that i don't think i want to now. what should i do to make more power with an injected motor? I have a 92 F-150 2WD with a 5 speed

 

Check with Clifford Research. They make a lot of performance parts for inline sixes.

 

I have done 3 swaps for people like this. All of them were told that they wouldn't like the bang for the buck, they didn't!!!! I built a 300 in a bronco that would out run my father-inlaws f150 390cu. Clifford is the way to go if you don't like the 460 idea. Which is the engine now going into my bronco!

 

I have a 73 f100 that came with a 240 and 4 speed. I pulled them out and went to a 302 and c6. It runs ok, but I am disapointed. I haven't had mine together a year and am thinking of a 351w upgrade. My 302 has 69 model boss heads, 83 models aluminum mustang manifold, holley 600 and crane cam. I don't know what horse power it makes, but I do know it won't spin the tires unless the pavement is wet. I think I may have flushed my torque down the toilet with a 302.:-staun

 

[updated:LAST EDITED ON 13-Dec-02 AT 00:16 AM (EST)]>I have a 73 f100 that came with a 240 and 4 speed. I pulled
>them out and went to a 302 and c6. It runs ok, but I am
>disapointed. I haven't had mine together a year and am
>thinking of a 351w upgrade. My 302 has 69 model boss heads,
>83 models aluminum mustang manifold, holley 600 and crane
>cam. I don't know what horse power it makes, but I do know
>it won't spin the tires unless the pavement is wet. I think
>I may have flushed my torque down the toilet with a
>302.:-staun

You might want to reconsider the intake, I just had mine off my factory Dominator Mustang with the 302 H.O. to replace the cam. When I did this I noticed that the factory ports on the intake were mismatched to the heads about .125" all the way around the port. So I port matched the intake to the heads.

I won't be able to tell you if it ran better like that, becuase I just bought the car a week ago and it had a cam with 3 flat exhaust lobes.

 

Free advice. Stay away from the 302, it is not worth the swap. Don't bother with the 460 unless you have endless money to throw in the gas tank. If you wanted a 460 it is easy enough to find one in a F250/F350. Don't get me wrong, there is absolutely NO replacement for displacement. But the 460 will require a new tranny. Why pay for the new tranny when you can put that money into building a 351? Also, the whole clifford thing, great idea, but the 300 was not designed for performance or high HP. It is a low down torque and grunt engine. Great for torque, bad for HP. Adding the hi-po parts to the 300 takes away the most valuable characteristic of the 300, it's reliablity.

I opted for the 351. Plenty of torque and HP, easy (and cheap) to modify, and they are reliable. I have done two 300 to 302 swaps and my own 300 to 351 swap. Both of the guys with 302s are considering the 351. It is just a better engine to swap in there.

 

I might be able to chip in here, considering I owned a 95 F-150 with 300/6 for a year and 1/2, and now a 95 F-150 with a 302 for 6 months. Both had the 5 speed tranny, 3.55 gears, and same wheelbase. The 300/6 was a 2wd, but my new one is a 4wd. I loved my 300/6 because it had a crap load of torque, and it pulled trailers well. My 302 I love as well, I think it's a great motor but it just doesn't really fit well in a truck. It's not really a truck motor, great mustang motor though. I like my 302, it is much faster than the 300/6 in acceleration, I just feel that the 302 is a better engine over the 300/6 for me and my lifestyle. However, you won't like the change of a 300/6 to 302 I bet. The 302 just has no low end power, it's all 3000RPM+. However, I obviously didnt stick with the 300 when I got another truck. I wanted a 5 speed, so I was stuck with the 302 which I didn't mine. There are a rediculous amount of perf. parts for it, which I hated that I couldn't put anything easily into my six. I say if you're going to convert to a V-8, go 351. The 300/302 swap just isn't worth the trouble. The 351 has much more low end power and is much better in a truck than a 302. It too has a lot of performance parts out there for it.


Primary rig is Green Thunder:
95' F-150 XLT 4x4, 302, 5 spd, MSD 6A, Flowmaster Exhaust, Sunroof, Clear corners w/ Diamond headlights, CD player with 2 10" subs and some 32" BFG Muds .

Check out my Gallery for a look-see.


Justin - One Happy FTE Member

 

 

Are the bell housing patterns the same on the 300 6 and the small block 302/351

 

Yes, they are the same. Quite an old thread you've found here