gtxrt
Well-Known Member
how much difference in stall between a 1967 383 12 inch converter and a 1971 11 inch that came in a 383 super bee.
Agreed, This is why,say you want a 3000 stall converter,so you call and order a 3000 stall.They may ask many questions as far as engine build and type of car,weight,etc.Always give this info even if they don't ask.The first "Performance" converter I bought was for a 904 and I wanted a 3000 stall. That is exactly what they sold me. Put it in and it would stall at 2300 and no more.Called and asked why.Answer was how much Hp/Torque is in front of it? I said maybe 200 Hp.It was a Built Slant Six. Was told "Put 350 Hp in front of it and you will get your 3000 stall. This was 30+ years ago. Allot has been learned since then.different in their torque output.
the reason i was asking in a 3800 lb car with 2.76 gears will be putting in 2.94 posi shortly with a mild built 440 and a hughes 24-20 11" street rod converter it has way to much slippage it flashes to 3500 rpms and just touch the gas at 60 mph it flashes 600 rpms. i have a choice between the stock 12' or the stock 11' of a 71 super bee. i was trying for maybe 200-300 rpms over stock 12" and no more. 11" might still be to much.
hughes said because of the 2.76 gears plus weight of car, am cruising at only 2200-2300 rpms besides.Not sure why your 11" hughes convertor would flash 600 RPM at a cruising speed. But a good stock 11" convertor is just fine, not even close to too much.
hughes said because of the 2.76 gears plus weight of car.
i will try the 11". i will post the results when i get it in at the end of the week.Ya, even so, at cruising speed the convertor shouldn't flash like that. At 60 MPH the weight of the car doesn't matter that much since it's already moving, but I guess that tall of a gear may trick the convertor some because it's resisting acceleration. A good working stock 11" is still a very mild piece that should perform well. A top quality aftermarket convertor can far exceed the OEM parts.
Good luck.i will try the 11". i will post the results when i get it in at the end of the week.