[Jack Gifford]

I'm not aware of anybody ever doing that- it would be up to you to experiment with brazing and cutting the main-torus fins. The design of the Dual Coupling HydraMatic rules out converting one to racing. The 1-2 and 3-4 upshifts require filling the smaller fluid coupling- which cannot happen in a tenth of a second- the typical actuation/release time of bands and clutches (as in Dual Range HydraMatics).

Or- do you perhaps have a Canadian Pontiac with a Chevy engine? If so, ignore what I said above.

[Tommo99]

Originally Posted by Jack Gifford

I'm not aware of anybody ever doing that- it would be up to you to experiment with brazing and cutting the main-torus fins. The design of the Dual Coupling HydraMatic rules out converting one to racing. The 1-2 and 3-4 upshifts require filling the smaller fluid coupling- which cannot happen in a tenth of a second- the typical actuation/release time of bands and clutches (as in Dual Range HydraMatics).

Or- do you perhaps have a Canadian Pontiac with a Chevy engine? If so, ignore what I said above.

Thanks yep its the original 59 4 speed automatic, i think your correct as it doesnt look like a normal torque converter, i will check the manual tonight i have an original workshop manual for it.