Thread: 99 Regal GS transmission interchange

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  1. #1 Re: 99 Regal GS transmission interchange 
    Killa Bee Scottydoggs's Avatar
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    its not the same electronically. valve bodys different too iirc. and a gomp g tranny wont work at all if the cars not a comp g.

    97-2000 iirc is a direct swap. as long as its got the external pnp switch it will work. the 01 up have it internally, that you can swap over to make work. 03 would be the very end of the line for years to use.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  2. #2 Re: 99 Regal GS transmission interchange 
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  3. #3 Re: 99 Regal GS transmission interchange 
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    I definitely appreciate the info for sure Scotty. I have sucessfully converted a 4l60e and 4l80e to operate without issue on a couple 03+ GM trucks but I have been out of the trans rebuilding scene for quite some time now.
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  4. #4 Re: 99 Regal GS transmission interchange 
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    I don't mind swapping my valve body and channel plate (if necessary). I would probably need a separator plate if these trannys are as hard on the plates as a 4l60 is. But I don't want to reuse my pump because it has seen better days. I found a reman delco pump for 160 but that's how much the entire trans will cost from the yard. Any idea if the newer pump would work on the older valve body/channel plate?
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