6pakattack Time
Got one more piece of the puzzle ordered today !! Got a 727 with a manual shift valve body,with deep tranny pan,and 3500 stall speed converter and a Gear Venders OD unit !! :cheers:
Dennis, I'm wondering if you are aware that a 727 behind a slant 6 compared to a 904 is anywhere from .15 to .20-seconds slower in a quarter of a mile? The additional rotating weight of the bigger, heftier internal components, plus the extra heft of the transmission itself is what slows them down.
A 727 is definitely the stronger transmission of the two, but a 904, properly built can handle up to 600 HP, with reliability.
The one in my supercharged 360 Magnum (445 RWHP) has no real upgrades beyond a better-ratio shift (band) lever and a Trans-Go manual valve body, and it exhibits no strain in handling the torque of that V8.
Pulls that 3,500-pound caar to mid-11's with crisp shifts.
Additionally, a 2.74:1 1st-gear planetary gearset for a 904 is dirt cheap (you might want to consider one) while I don't think the 727's have the availability of (cheap) OEM 2.74:1 units... Could be wrong about that. I'd look into that if I were you.
I know you are interested in making your car as fast as it is reasonable posible.
I'd think about that 727 before I hitched it to that slant 6....
Just sayin'...