SBC to BBC tranny bolt patterns?
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From: Waterloo, Iowa
Car: 86 firebird with 98 firebird interi
Engine: pump gas 427sbc Dart Lil M 13.5:1
Transmission: Oldani TH400 w/ BTE 9" convertor
Axle/Gears: 31 spline Moser/full spool/4.11Rich
SAME-sometimes it depends on what tranny as you get the older ones with muti holes for multi engines
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From: 51°N 114°W, 3500'
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
V8 Chevrolet bellhousing bolt patterns are the same. Buick, Old, Pontic, Caddy (BOP) use a different bolt pattern. As mentioned above, some of the older trannies when BOP made their own engines, may have a dual bolt pattern to fit on BOP and Chev.
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From: Loveland, OH, US
Car: 4
Engine: 6
Transmission: 5
What Stephen said...
They are the same.
Motor mounts are the same (although there are a few varieties to choose from to obtain optimum fit).
Flywheels and flex plates are the same in the 86-back versions(except for balance issues, which are easily overcome - but the bolt patterns are the same).
Distributors, starters, and flat tappet lifters are the same.
Everything else is different.
They are the same.
Motor mounts are the same (although there are a few varieties to choose from to obtain optimum fit).
Flywheels and flex plates are the same in the 86-back versions(except for balance issues, which are easily overcome - but the bolt patterns are the same).
Distributors, starters, and flat tappet lifters are the same.
Everything else is different.
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