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What type of bellhousing do you need to hook your Pontiac 400 or 455 motor to an automatic transmission for a 1979 trans am?
Wiki User
∙ 12y ago
You just need the Transmission to be the BOP (Buick, Olds, Pontiac) bellhousing pattern. Chevy used a different pattern than the other divisions, and a Chevy transmission will not work without an adaptor plate. Any BOP turbo 350 or 400 will bolt up, although the turbo 400 will have issues fitting next to the catalitic convertor, and will require the transmission cross member to be moved back a bit. The turbo 350 is your best bet, readily available, and durable. If you want to go high tech the 4 speed overdrive turbo 200-r4 from a later model gm car will also bolt up with some work, it however will need serious internal upgrades to withstand the torque output of a 400 or 455 Pontiac V8.
Wiki User
∙ 12y ago
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