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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

engine swap

Old Jul 2, 1999 | 11:35 AM
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engine swap

i need to know about an engine swap in my 1989 f150. it currently has a 302 with an automatic transmition. i wanna put a 351w into it but need to know if i can keep the 302 wiring harness or do i have to change it out to a 351 wiring harness
and please let me know of anything else that has to be changed over. any help will be geatfully appreciated
 
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Old Jul 2, 1999 | 12:14 PM
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From: saramento usa
engine swap

I'm a little foggy on the wiring harness, but I wouldn't think it would need to change.

Changes from 302 to 351W:

-Adapter for accessory brackets: I believe you can purchase this from Ford. The 351W is about 1 1/2" taller than the 302 (and about 40 lbs heavier).

-Intake manifold (manifolds won't swap)

-Flexplate (if automatic): 302, I believe, uses a 50 oz counter balance, while the 351W uses 28 1/2 oz.

-Harmonic balancer (see above)

-Front cover on timing chain: I think this is different

-Oil pan may be different also

That's all I can think of for now.

Slik
 
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Old Apr 25, 2000 | 02:28 PM
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From: Copley, OH
engine swap

 
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Old Apr 28, 2000 | 12:27 AM
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engine swap

I am currently running a wiring harness cobbled from 302 truck and mustang ( dual exhaust needed dual O2 sensors. ) There are some sensor wires that will need to be lengthend, mostly egr, throttle position and distributer connections.
 
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