Swap out 5.0 for 5.8
My brother has a 92 Bronco with a 5.0. It looks like the motor may be DOA. If it is indeed dead, I suggested he swap in a 5.8. He said the 5.8 is only good for another 15 or 20 horsepower. I'm not a Ford guy, so I don't know. Coming from the Chevy world, the 350 is much preferred over the 305. I assumed the same goes for the 5.0 vs the 5.8? Anyways, I have a two part question: Is there an advantage to going with the 5.8 over the 5.0, and if so what is involved with making it work in the Bronco?
His plans for the Bronco is 4" of lift, 35s, winch bumper, tire carrier rear bumper. A bit more power would be good to move the extra weight. He also plans to use it for a DD, so he is concerned about mileage. :-X24 |
Originally Posted by bad_idea
(Post 17980805)
My brother has a 92 Bronco with a 5.0. It looks like the motor may be DOA. If it is indeed dead, I suggested he swap in a 5.8. He said the 5.8 is only good for another 15 or 20 horsepower. I'm not a Ford guy, so I don't know. Coming from the Chevy world, the 350 is much preferred over the 305. I assumed the same goes for the 5.0 vs the 5.8?
Originally Posted by bad_idea
(Post 17980805)
what is involved with making it work in the Bronco?
Originally Posted by bad_idea
(Post 17980805)
His plans for the Bronco is 4" of lift, 35s, winch bumper, tire carrier rear bumper. A bit more power would be good to move the extra weight. He also plans to use it for a DD, so he is concerned about mileage. :-X24
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Yupp.
I have one of each. 5.0 w/ 4.56 gears and 5.8 w/ 3.55 gears The 5.8 has a noticeable amount of more torque. I notice it when pulling hills. And when you step on it, the 5.8 is like a rocket ship compared to the 5.0. My 5.8 is in a Bronco, which is slightly heavier, and I can get 16mpgs out of it whereas my 5.0 is in my f150 and I never get more than 14mpgs out of it. De minimis in that department. If you feel like messing with the conversion hassles, it would probably be worth it. |
Originally Posted by Conanski
(Post 17981011)
With that done swap in a 5.8 PCM, hook up an exhaust and you are done.
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Originally Posted by bad_idea
(Post 17980805)
He said the 5.8 is only good for another 15 or 20 horsepower.
The stock 5.0 is 185hp/270tq The stock 5.8 is 210hp/325tq. Torque is what you want in an suv/truck. Horsepower is for sports cars. His plans for the Bronco is 4" of lift, 35s, winch bumper, tire carrier rear bumper. A bit more power would be good to move the extra weight. He also plans to use it for a DD, so he is concerned about mileage. |
Originally Posted by bad_idea
(Post 17982187)
Pull the PCM from any 5.8 F150 or does it need to be a Bronco?
Originally Posted by bad_idea
(Post 17982187)
Do the exhaust manifolds from a 5.0 match up to the 5.8?
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Thanks all. I'm thinking a trip to PNP for all of the swap bits and a reman'd long block will likely be the route we go. What is THE ideal year(s) of F150/250 to pull the supporting bits from? Broncos are slim pickings at our local PNP, but there are usually 10-20 F series.
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'94/96 (97 HD F series) Bronco's had 5.8 with roller cams and would be best bang for the buck.
On the computer, make sure it is a 5.8 computer and that the donor truck has the same transmission as what you have. (Look at door tag code to verify). I have heard of some people using their 5.0 computer on the 5.8 and that it works. Most people swap computers though. Consider replacing rear and front seals while easily accessible and you might want to install a speed-i-sleeve on the journals because they probably will have a groove started in them If you are doing intake gasket and timing cover gasket, I'd do them before installing engine just in case a bolt breaks you can easily disassemble for repair. |
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