What tranny after engine swap?
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What tranny after engine swap?
I'm new to this site, looks like it will be very helpful. I've got a 94 F150 short bed that I bought 4 years ago for my son(s). One owner super clean truck. We want to swap the 4.9 for a 5.0. I plan to get an EFI engine from a similiar year truck and do some mild mods. Question, it has a 5 speed manual, will that trans bolt up and be geared right for the 5.0? Thanks...
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The tranny will bolt up to a 5.0.. with a 5.0 specific flywheel, but you will likely want to change the rear axle gearing. The I6 trucks often came with 3.08 gears, and the I6 handles that fairly well because it produces good TQ, but the 5.0 is a 100lb weakling in comparison so you'll need 3.55-4.10 gears to compensate. But check what you have first, there is an axle code on the door jamb, and the rear pumpkin will have a tag under one of the cover bolts, both of these will give you the axle ratio.
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Join Date: Jun 2006
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Whether or not a 3.08/5.0 combo is acceptable or not depends upon the intended use. If you're just scooting around in a reg cab 2wd vehicle.. not carrying or towing anything heavy then it'll work OK. What's OK? Around town and at slower hwy speeds it'll be fine, but try to drive 75mph on hilly interstates or into heavy winds and it'll be one sluggish vehicle. Swap in 3.73-4.10 gears and the vehicle is transformed. It'll require more shifting around town, but it will now haul a few thousand pounds at 70mph without loosing speed uphill. Fuel milage will suffer the more you go beyond this speed, but at least the box behind the cab is usefull again for it's intended purpose.
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