just had a few questions. I have a 92 f150 4x4 with the 5.0 in it. i was wanting to build a motor for the truck to make it i descent pulling rig. i have read a lot of posts about about what cams and heads to use but, i seen a post about the truck 5.0 is a roller capable block is this true? also i was looking in to doing the MAF conversion, can i just find a F150 or Bronco and rob all the parts off of it. and just what parts do i need to complete the conversion. My truck also is a E4OD so i will need a computer out of a truck with the same correct. The good thing is i have a complete parts truck that is the same as my truck so im going to use the engine out of that truck to build so i dont have to rush the build. thanx in advance for the replys im sure there will be more questions to follow..

 

i have seen a lot of talk about the GT40 heads and the E7 heads what trucks did these heads come on and which is the most bang for the buck. keep in mind im not lookin to run 10 sec in the 1/4 just a good solid "stump puller" lol

 

Well that ain't gonna happen unfortunately, not enough displacement. How big a load are you wanting to haul?

 

ive got a 20 foot boat that i tryed to take to the lake last night and was just very dissappointed in the power. truck has 140xxx on it so it getting close to needed to be freshin up..

 

Time for a 351w! I am in the process of rebuilding one right now for my 91 F150. You can follow my progress in the small block forum.

 

or a 460 or powerstroke a 5.0 isn't going to pull chit it's a high revving motor not a low end grunt motor

 

like said, a 351 swap would be easy and would be more powerful off the line. Although if your dead set on keeping the 302 you can get more out of it.

 

Like the title says, I have rebuilt the 5.0 in my 89 4x4. I am regretting not just getting a 351W and calling it a day. But hindsight is 20/20. I put a comp cam (speed density friendly of coarse) in it. Had the heads totally rebuilt with comp cams springs and the whole nine yards. Edelbrock Intake and shorty headers. Basically a totally new engine and there was a minimul difference in the power. It's your truck and all but I would recommend a 351W. Just my 2 cents.

 

It's not just about displacement. My 300, with the same tranny as my 302, was a stump puller(in a literal sense, on more than one occasion).

A stroked 302 could be significantly better than stock, but I have to agree, you're better off selling the 302 and finding a 351.

Or focus on gears instead.

 

ok then what all do i need to change for the swap engine computer harness. also if im wanting to do the MAF conversion do i just find a whole truck to rob it all out of and what kinda upgrades can i do ? heads cam ??? i havent been around 351 much thanx guyz sounds like i need to displacement instead of HP

 

I don't think that 140k miles means that is is close to needed to be freshened up unless it has been neglected.

My 95 302 has 270k on it and it runs as good as it ever did. I know that the clock it ticking though. I'm hoping to reach 300k or more.

These trucks with the 302 are not really setup for towing. They can do it though. Mine has many times. They just don't make enough low end torque to do it well.

 

Yes like the others have confirmed the 5.0 is a bit small for heavy towing, but light towing performance can be greatly improved over stock with the right additions. But before getting into that what gearing and tire size you have?

 

It makes me laugh how often people say to ditch the 302, and get a 351. I've had many of both over the years. (I'm 49) Right now, I have an stock F150 with a 5.0, a 70 F100 with a stroked 302, and a bone stock 96 Bronco with a 351. I've towed with all three trucks. I pull a nearly 10,000 lb dry weight go fast boat with twin 383's. The F100 does the best going down the road (3.89 gears and an AOD), but lacks the weight to pull it out of the water. Can you say smoke show? The F150 doesn't spin as much on the ramp, but dogs out on the hills driving down the road. The Bronco weighs so much, pulling the boat out of the water is a breeze. Going down the road, the 351 is just as doggy as the 5.0. Unloaded, the F150 will smoke the Bronco, and we all know where the stroked F100 shines. The 351 is not the magic answer to having a better tow rig. The horsepower and torque is just not that much higher in stock form. That would be like people trying to say that the 90's Camaros will beat the 90's Mustangs, since it is a 5.7 against a 5.0 engine. It just aint so all the time. Put the right gears behind that 5.0, with a good exhaust, and maybe even an RV cam. Of course you can build that 351 to have more power. In stock form though, my 351 is a dog.

 

i would have to say that this truck still makes descent power for haven 140k on it and as far as i know the tranny hasnt been touch which is what sold me on the truck and the fact that is has the factory tow package with the sway bars.

Conanski im running 31's with 3.55s and a posi carrier out of an explorer. i can pull my 16' utility trailer with 4 four wheelers on it and i pulls good, i mean you know its back there but the boat im pulling know is a 20' pontoon which shouldnt way much more, but i could really tell a difference.

The only thing i changed between pulling the two is i advance the timing to try and get more out of it maybe should have left alone. really sucked the gas for about a 70mile round trip it burned 3/4 a tank runnin 70 on some mild hills on the road which it has never been that bad..

 

Yeah that's what my truck has and the 5.0 really struggles compared to the 5.8. But swap in 4.10's, add an Explorer cam with 1.7 rockers, and longtubes and you'll see a big difference. If you also get a truck mass air computer and engine harness you can use a little more agressive cam for even better TQ but it's not absolutely necessary.