What year auto tranny would be the best for drag racing? I have a 64 904 that I can use but was told by someone that the later ones are better. Thank you for any help.

_________________
Raymond Flynn
Registered Six Offender!!!!

If possible, use a 68 and later 904 with the larger input shaft. More torque converts are available for that size input shaft.
But... these will not fit-up to 60 to 67 SL6 crankshafts with the small counter-bore in the back of the crank. (torque converter register hole)

The 68 and up 904 also has mechanical shift linkage, (not cable activated)a different (more common) speedo gear arrangement and a slide-in driveshaft yoke.
DD

Thank you DOC for the info. What is the H.P limit on the 904 trans if I rebuild it and put all of the small block internals it it?

_________________
Raymond Flynn
Registered Six Offender!!!!

Racers run the 904 behind small blocks that run in the 10's. True they do use a few after-market parts, you should have no problems with the stock parts behind a slant six.

Richard

_________________
Part of Tyrde-Browne Racing

This will be a turbo motor putting out a est 500 H.P

_________________
Raymond Flynn
Registered Six Offender!!!!

Simply do the same mods as the small blocks do and should be fine.

Richard

_________________
Part of Tyrde-Browne Racing

Thank you very much Fopar

_________________
Raymond Flynn
Registered Six Offender!!!!

I put a low gear set and A999 front half into my 904.

_________________
11.02 @ 120.56
http://www.youtube.com/watch?v=EAxRmoDgsdY
Chassis dyno
http://www.youtube.com/watch?v=wd6hFGzLJMc

low gear sets help, we put the guts out of a v8 904 into the slant six 904 case and added extra clutches and a shift kit. Never broke yet and pulls hard off the line

_________________
1967 Dodge Dart