Swapping in a BBC- what motor mounts to use?
04-16-2008, 10:00 PM
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Car: 05 Corvette Z06, 86 T/A Big Block
Engine: 468, 427, I6
Transmission: TH400, 6-speed, TF999
Axle/Gears: 3.42, 5.38
Swapping in a BBC- what motor mounts to use?
I am putting a 468 bbc in my 86 T/A and I am wondering if there is a special motor mount recommended for this swap? Or should I use standard sbc mounts or solid mounts? Just wondering, also what if any, kind of special trans crossmember do I need to run a TH400, what trans came in the car, a 700r4? If so will that crossmember work? I also have the Hooker super comp full length headers and was wondering will I need to use a BFH to get them to fit or are they pretty good fit wise? Thanks alot
04-16-2008, 10:51 PM
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Motor mounts - poly V8 mounts.
Crossmember - Spohn TH400 swap crossmember & torque arm that mounts to the crossmember.
Crossmember - Spohn TH400 swap crossmember & torque arm that mounts to the crossmember.
04-16-2008, 11:05 PM
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Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
Re: Swapping in a BBC- what motor mounts to use?
When I first did my swap, I just used normal GM rubber mounts. I eventually switched to solid mounts. The engine is held up be a front motor plate now.
The only real difference between BBC and SBC mounts is the height. Using SBC mounts on a BBC will raise the engine up slightly. I doubt you'll notice a difference.
Expect to spend at least a day getting the Hooker headers to fit. They are not a direct fit and some modifications will probably be required. They're the cheapest swap headers and the worst fitting.
The only real difference between BBC and SBC mounts is the height. Using SBC mounts on a BBC will raise the engine up slightly. I doubt you'll notice a difference.
Expect to spend at least a day getting the Hooker headers to fit. They are not a direct fit and some modifications will probably be required. They're the cheapest swap headers and the worst fitting.
04-17-2008, 07:24 AM
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Car: 05 Corvette Z06, 86 T/A Big Block
Engine: 468, 427, I6
Transmission: TH400, 6-speed, TF999
Axle/Gears: 3.42, 5.38
Re: Swapping in a BBC- what motor mounts to use?
Thanks for the info, could I just buy bbc motor mounts for any 2nd gen fbody or is there a special year/application? What headers would you recommend?
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