Any companies selling complete small block overdrive transmission assembles?

Depending on how much power you are planing on putting through the transmission with your 440, you may want to consider a well-built 4L60. I'm putting a supercharged 408 Magnum that should be close to 730 rear wheel horsepower in my '68 A-Body, and am planning on up-sizing my transmission to a re-geared 4L60 with a bolt on bellhousing. There is a bolt-on bellhousing available for a big block conversion too. Nice thing is the 4L60 is fully programmable with the Holley Terminator Max ECU including traction control.

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Man, I don't know. I think you may have trouble getting a 4L60 up under there without a lot of floor/tunnel surgery. Maybe that doesn't bother you? In my case, I have a COMPLETE and FINISHED interior in the car so it's too late to start cutting everything up now. I love to fabricate and have done a LOT of it in the past. But I just bought this car and paid a good amount for it partly because it was so complete and finished! It wasn't a project car at all. But of course I can never leave anything alone. :rofl: After driving this car at 4000 RPM up I-75 I think I want an OD of some sort. I was all ready to buy a Gear Vendors O.D. but then I read someone's account of all the hacking and welding they had to do to get it in their car and I think I've changed my mind. Nothing can ever be EZ can it??? :mad: