Originally Posted by qtrmile2
Good information here guys. I know your combo does mean alot when you running stick or auto. I will tell you one thing though the year before last when I was waiting to buy a Jerico I ran a reverse valve body T400 with a trans brake in my 67 Camaro with a 5500 rpm stall and 456 gears. I left around 4600 rpm on the brake. Best ET was 11.07 123mph
60ft 1.51 best.
Last year I put the Jerico 4speed in with a 19lb. aluminum flywheel and 488 gears. Best ET 10.40 128mph 60 ft best 1.38. I had the exact same motor and tuned it the same way. With my set up on the motor it liked the Jerico better than the T400. This is the only comparison I have cause I always run sticks. Don't get me wrong now the automatics leave awesome with a brake.
Now pro stock and alot of other guys run clutchless trans which I thing is even quicker and you could pick up a couple hundreds on ET.
I always heard the converters slow you down alittle.
Hey Vince i don't know what size motor you have but it sounds like you have a real tall cam and the motor like to be kept in a narrow power band which the 4 speed can do better than any automatic. You probably lost atleast 150lbs from the 400.
With my 3250lb Malibu (with driver)i have a lot of things wrong, too large cam, not quiet enough gear for the motor size. But with a PG it 60' from 1.41/1.45 with 5500 converter leaving at 4800, without bars it will stand on the bumper and runs 6.52/10.59 at Memphis but will only run 124mph with a 377" motor. It would run better with a 383" and shorter cam.
This yr. i hope to remedy that with the 434" motor with stacks injection, hopefully low 6's and some 9's.
JMO
Zip.