Swapping a 302 for a 351w
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New User
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Swapping a 302 for a 351w
I am new here, And trying to find out what I might have to do to swap out a worn out 302 for a 351w. The truck is a 1993 and the new 351w is a 94 model out of a truck, Any help or info is greatly appreciated. Thank you
Cargo Master
Joined: Aug 2009
Posts: 2,038
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From: Olathe
Welcome to FTE.
Just to let you know you're in the 2009 and newer F150 section of the forum.
Now I'm assuming that you are doing this swap in a F150 so here is where you need to go.
1987 - 1996 F150 & Larger F-Series Trucks - Ford Truck Enthusiasts Forums
also you might want to try the engine swap section
Engine Swaps - Ford Truck Enthusiasts Forums
Just to let you know you're in the 2009 and newer F150 section of the forum.
Now I'm assuming that you are doing this swap in a F150 so here is where you need to go.
1987 - 1996 F150 & Larger F-Series Trucks - Ford Truck Enthusiasts Forums
also you might want to try the engine swap section
Engine Swaps - Ford Truck Enthusiasts Forums
Thread Starter
|
New User
Joined: Jun 2010
Posts: 4
Likes: 0
Welcome to FTE.
Just to let you know you're in the 2009 and newer F150 section of the forum.
Now I'm assuming that you are doing this swap in a F150 so here is where you need to go.
1987 - 1996 F150 & Larger F-Series Trucks - Ford Truck Enthusiasts Forums
also you might want to try the engine swap section
Engine Swaps - Ford Truck Enthusiasts Forums
Just to let you know you're in the 2009 and newer F150 section of the forum.
Now I'm assuming that you are doing this swap in a F150 so here is where you need to go.
1987 - 1996 F150 & Larger F-Series Trucks - Ford Truck Enthusiasts Forums
also you might want to try the engine swap section
Engine Swaps - Ford Truck Enthusiasts Forums
Fleet Owner
Joined: Oct 2005
Posts: 20,786
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From: Kentucky
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
That's a good link except for the comment about the M5 snapping like a twig behind the 5.8.. it's not that weak.
Condensed version of the 5.0-5.8 swap is..
- Get a complete 5.8 EFI motor for the swap because very little transfers from the 5.0.
- DO NOT remove or alter any part of your truck wiring harness.
- Mount the 5.8 where the 5.0 was with a 28oz flywheel or flexplate for your specific transmission.
- Reattach the wiring harness to the engine, everything is in the same place with the same connectors.
- Substitute a 5.8 EEC that also matches your transmission EXCEPT if the truck is mass air, in that case do not change the EEC.
- Mount all the accessories and starter.
- Connect the exhaust with a 5.8 Y pipe or custom setup.
- Done.
Condensed version of the 5.0-5.8 swap is..
- Get a complete 5.8 EFI motor for the swap because very little transfers from the 5.0.
- DO NOT remove or alter any part of your truck wiring harness.
- Mount the 5.8 where the 5.0 was with a 28oz flywheel or flexplate for your specific transmission.
- Reattach the wiring harness to the engine, everything is in the same place with the same connectors.
- Substitute a 5.8 EEC that also matches your transmission EXCEPT if the truck is mass air, in that case do not change the EEC.
- Mount all the accessories and starter.
- Connect the exhaust with a 5.8 Y pipe or custom setup.
- Done.
Thread Starter
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New User
Joined: Jun 2010
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Thanks for the help. I had noticed that the wiring harness was the same. Good to know about the flywheel though!
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FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
That's the same deal but the Lightning motor will stretch the 19lb injectors and possibly the fuel pump to and beyond their limits if you upgrade the cam.. which is WAY too easy so why wouldn't you. But that means you then need a set of 24lb squirters with a matching MAF meter or better yet some tuning. The trans should always get a shift kit no matter what motor you use, matter of fact every one of these trucks should get a shift kit even if you're not changing the motor, Ford set them up far too soft and smooth and this is directly responsible for many of the premature failures we see.
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Hotshot
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That's the same deal but the Lightning motor will stretch the 19lb injectors and possibly the fuel pump to and beyond their limits if you upgrade the cam.. which is WAY too easy so why wouldn't you. But that means you then need a set of 24lb squirters with a matching MAF meter or better yet some tuning. The trans should always get a shift kit no matter what motor you use, matter of fact every one of these trucks should get a shift kit even if you're not changing the motor, Ford set them up far too soft and smooth and this is directly responsible for many of the premature failures we see.
I'm not sure if I would upgrade the cam or not. I hadn't actualy thought about that much. The motor I was looking at is a zero mile factory motor, so I hadn't considered modifying it. I was thinking it would just be a cool swap.
If I don't do that, I'm not sure if I will do a 5.8 swap anyway or just beef up the 5.0. I do like the idea of having a 5.8 though.
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