904 to 360?

I have a stock 904 torque converter externally balanced for a 360.Not going to use it,Im going with a 727.Also have 2:72 ish gears for an 8 1/4 from my old M body cop car diff.Not sure on the splines in the tc.Could be yours cheap.PM me and we can work something out!




Mild performance gains. No dragging racing or street racing planned. Rather have a heavier/stock-ish TQ for the mileage benefits and driveability.

The car has sat in my garage for the past 5 years and has had nothing done to it. Time to get it out and work on it. All I really want is a nice lil sunday driver that looks clean, sounds good, and is fun to drive around Lake Tahoe and Geiger grade (Northern Nevada resident). So I need some torque and a bit of power to pull the bigger hills. I plan to just run the 904 since its already there and I see nothing wrong with it
(Pulled the pan....looks like a 41 year old tranny with 60,000 miles on it.....)

So while the engine is out I will have the trans gone through at a shop and refresh it with new seals and clutches. Then I plan to upgrade the cooling system with a tad bit bigger trans cooler.

I have the 7-1/4 rear axle and that is going to go. I want an 8-1/4 with 3.23:1 gears and a sure grip. I would even take the 2.72:1 gears in an 8-1/4 and see how it would do.


Thank you! Good to know that.