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What about the 200r4? Same ratio as the 904 w/low gear set and a nice .67 od. Can handle a good amount of power when built right. And no tunnel mods, just need to redo the cross member.



Yes, the GM 200-4R or the 700-R4 can be used. The 700 has the lower 3.00 first gear and the 200 has a 2.75 I think. Both are still lower than any stock 727. Either one can be built to handle a good amount of power and both are small enough to not require any crossmember or floor pan mods. You will still need to fab your own trans mount however. I think the only other real issue with those transmissions is you will need an aftermarket shifter. Their shift pattern is is PRND321 where the gear vendors and 500/518 have an electronically activated overdrive gear and will mate up to your stock shifter.



Wilcap makes an adapter for this app.. I will use a floor shifter any so that will be taken care of. And yes you will need to make a trans mount, but how hard can that be, the 518 you need to do this also.