700r4 transmission question
Thread Starter
Joined: May 2006
Posts: 577
Likes: 2
From: Minnesota
Car: 84' Trans Am
Engine: 5.0 H.O. L69
Transmission: 700R4
Axle/Gears: 3.73 Disc Brakes
700r4 transmission question
well i have an 1984 pontiac firebird with the carb 2.8l with the 700r4 trans. well i was thinking about swapping the 2.8l with a 305. will my current trany bolt up to the 305? If not what will work?
Junior Member
Joined: Feb 2005
Posts: 3
Likes: 0
From: Rothbury,Michigan
Car: 1991 Camaro Z28
Engine: '96 350 vortec tpi
Transmission: 700R4 transgo reprogramming kit,tra
Axle/Gears: 10 bolt 3.73 eaton posi unit
The 2.8 trans will not interchange with your 305,you will need a trans from a 700r4 from a v8 car.
Senior Member
iTrader: (3)
Joined: Jan 2005
Posts: 517
Likes: 0
From: San Angelo, TX
Car: 1988 Pontiac firebird
Engine: '93 LT1
Transmission: Built 700R4
Axle/Gears: 3.70 9 bolt
the 700r4 doesn't necessarly need to be from a v8 car....large v6 have the right 700r4. it just needs to be from a 90 degree block...like all v8 cars. the 2.8 has a 60 degree block
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May 4, 2026 08:09 PM