engine swap
Junior User
Joined: Jul 2006
Posts: 58
Likes: 0
While I never performed this swap, here are some things I remember reading about.
I believe you will need a PCM for a 5.8 or tune yours. (maybe not)
The motor is physically taller so the exhaust will need to be modified.
Bellhousing and motor mounts are the same as the 302.
Will need a 351 lower efi manifold (if keeping efi). Upper 5.0 will bolt to a lower 5.8. Also will need a 351 distibutor.
I would ASSUME that the a/c lines will need to be modified, due to placement of the compressor on the 5.8. (I'm just guessing.)
I have thought about the 5.8 swap a few times, however the thought of an even tighter engine compartment (5.8 is taller and wider) out weighs the benefit of more cubes. I do believe the 5.8 would be better for towing and heavy duty use. This is strictly my opinion and I pretty much only use my van as a family hauler. How fast do I need to go with a 2 year old in the back? :-)
I believe you will need a PCM for a 5.8 or tune yours. (maybe not)
The motor is physically taller so the exhaust will need to be modified.
Bellhousing and motor mounts are the same as the 302.
Will need a 351 lower efi manifold (if keeping efi). Upper 5.0 will bolt to a lower 5.8. Also will need a 351 distibutor.
I would ASSUME that the a/c lines will need to be modified, due to placement of the compressor on the 5.8. (I'm just guessing.)
I have thought about the 5.8 swap a few times, however the thought of an even tighter engine compartment (5.8 is taller and wider) out weighs the benefit of more cubes. I do believe the 5.8 would be better for towing and heavy duty use. This is strictly my opinion and I pretty much only use my van as a family hauler. How fast do I need to go with a 2 year old in the back? :-)
