Slant 727 WIW

replicaracer43 said

My statement is that 727s don't just blow up because of some kind of "sheer mass" issue... your own post stated that's what YOUR trans expert said..... That would make him a dumbass as far as I am concerned.. NOW, with that said, smaller and lighter transmissions ARE used in racing applications, but its for a slight ET gain, NOT durability.....but we aint talkin about race cars here, were talkin about the worth of a stocker/low hp trans...Now as far as why the factory would use a 727 behind a slant, I dunno.... a 904 is plenty durable for that.....

Click to expand...

Yes, I should have qualified my statement relative to Len's comment that 727's blow themselves up because of their own excessive mass as regards the usage... He deals in racing transmissions almost exclusively, so when he talks about things like design flaws and the effects of those flaws on transmission longevity, it is usually in reference to how they perform in a competition setting, not in street use. The thing about Torqueflites in a drag racing application that is significant here, is the operation requires that a big, heavy cast iron clutch drum is sped up to high rpm in first gear and then stopped instantly when the intermediate band comes on for the second gear shift, yanking a LOT of rotating weight down from considerable rpm to a dead stop in a microsecond. THAT is the exercise that causes failures (not explosions) in 727s. A 904 has lighter components, and fewer problems in that area, naturally,

When I asked, "What are YOUR credentials???" I was trying to get a quantitative analysis of your experience with failed Torqueflites, compared with my friend, who has had 30+ years of doing nothing but examining failed units brought to him by racers, and diagnosing what went wrong and why (and, fixing them.) He has spent a LOT of time looking at the internal carnage that happens on the drag strip, over a 30-year period. When he talks, I listen...

Sorry for the misunderstanding...