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Thread: Pontiac 455 + 4L80E = ???
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05-12-2006 #1
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Pontiac 455 + 4L80E = ???
I am retrofitting a 4L80E transmission into my 1971 Firebird. Almost everything is ready to go, I just have a few questions I am hoping a transmission guru can answer for me.
1. Where can I find a flexplate that will fit on my Pontiac 455 engine, and mate up with the torque converter? The stock flexplate has only 3 mounting holes, and the 4L80E requires 6.
2. Will a factory stock 3 speed shifter still physically work with the 4 speed transmission or will I need to buy one designed for a 4 speed?
3. Is the slip yoke for a 4L80E the same as a slip yoke for a TH400?
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