'85 351w plus SD EFI
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Freshman User
Joined: Sep 2003
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From: Ceour d'Alene, ID
'85 351w plus SD EFI
I'm planning on swapping the worn-out 5.8 in my '91 F250 with a recently rebuilt long block from an '85 truck (carbed, of course).
Will the '85 cam mess with the '91 SD 'puter? Any other suggestions or advice?
-Ben
Will the '85 cam mess with the '91 SD 'puter? Any other suggestions or advice?
-Ben
FTE Legend
Joined: Jun 2006
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From: Ottawa, Ontario
Was the '85 a HO motor? If it was use the cam it has. If not swap it out for an aftermarket cam, the standard cam for the non HO 351(both EFI and carb) is lame. You'll need the complete EFI intake with all wiring and plumbing for the swap.
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From: Ceour d'Alene, ID
Just now getting around to the swap... :P
Yeah, the air cleaner shows that it's an HO, so I'll leave the cam in. Looks like I'm going to have to swap the timing cover too, the old one had a cam-driven fuel pump.
Thanks all...
Yeah, the air cleaner shows that it's an HO, so I'll leave the cam in. Looks like I'm going to have to swap the timing cover too, the old one had a cam-driven fuel pump.
Thanks all...
FTE Legend
Joined: Jun 2006
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From: Ottawa, Ontario
Originally Posted by bennyd
Looks like I'm going to have to swap the timing cover too, the old one had a cam-driven fuel pump.
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From: Ceour d'Alene, ID
Too late, I already replaced mine... I've got both blocks side-by-side and I'm just moving most of my 91's gear over to the '86 block. Thanks for the tip though 
How much better is the '86 HO's cam? Am I gonna need to chip my ECM after I get done, or should it run ok?
How much better is the '86 HO's cam? Am I gonna need to chip my ECM after I get done, or should it run ok?
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