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

Swapping 4x4 from 94 OBS into 81 bullnose

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Old 04-10-2023, 08:00 PM
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Swapping 4x4 from 94 OBS into 81 bullnose

Before I buy the donor I need you guys to “check my homework” please.

My ride is a 1981 F150, 4x2, 4.9L carb, SROD, single cab, 133” WB

The donor is a 1994 F150, 4x4, 4.9L EFI, 5 speed manual, single cab, 117” WB.

I want to swap the front and rear axles, transfer case and transmission from the ’94 into my ‘81.

I’ll lose the mechanical speedometer, the mechanical clutch and will need a longer rear driveshaft.

Since it’s a 4.9L to 4.9L and F150 to F150 everything “should” bolt up?
Correct?
 
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Old 04-11-2023, 02:00 AM
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You are right from what I have seen posted.

On the clutch you can't use the 94 setup so need to find 83 to 86 for hydraulic.
Also add the reinforce plate on the firewall.

Oh rear springs & hangers are wider on the 4x4 but think you can use your springs?
Dave ----
 
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Old 04-11-2023, 08:49 AM
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Thanks for the reply.

The longer I look at this the more sense it makes to sell the 4x2 and buy a 4x4
 
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Old 04-11-2023, 03:04 PM
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Originally Posted by zjtr10
Thanks for the reply.

The longer I look at this the more sense it makes to sell the 4x2 and buy a 4x4
Or keep the 4x2 and buy a 4x4
Dave ----
 
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