3.1 to 5.0 swap
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Junior Member
Joined: Dec 2006
Posts: 10
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From: Port Richey, Fl.
Car: 1991 Firebird
Engine: 305 TBI
Transmission: 700R4
3.1 to 5.0 swap
I know that this has probably been discussed, but what is involved in a 3.1 cpi. to 5.0 swap besides, computer, and tranny? Thanks
Junior Member
Joined: Dec 2006
Posts: 43
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Car: 94Chevy s10, camaro is soon to come
Engine: 4.3L TBI Vortec
Transmission: 5 speed manual
Axle/Gears: I believe it's a 3.55 possi
is there any reason you are swapping in a 5.0, to the best of my knoledge 350's are more powerful and cheaper to build, so unless you just have a 305 laying around I'd suggest that.
To answer you're question you're definently gonna need new motor mounts, you may actually be able to use the trans if it's a 700r4 or t5, but short of that anything the engine bolts too is gonna need to be swaped to small block stuff.
To answer you're question you're definently gonna need new motor mounts, you may actually be able to use the trans if it's a 700r4 or t5, but short of that anything the engine bolts too is gonna need to be swaped to small block stuff.
Supreme Member
Joined: Jul 2001
Posts: 1,731
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From: LaFayette, NY
Car: '10 Subaru Forester
Engine: 2.5 Boxer
Transmission: 4EAT
Axle/Gears: 4.44
I'd recommend going to a 350 also... or if you stumble across a 400, unless someone's just giving you a free 305, you might as well upgrade. Bottom line is that it's a lot of work to do a swap so you might as well opt for a bigger engine. The more cubes you have, the better mannered the engine will be for the same power level and the aftermarket is the best for the 350.
Joined: Mar 2000
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
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