WEll im changing my trans was running a 4l60e with tci 3600stall with 3.73, and now im going with a 350th with a 3800-4000 stall and 3.73 i liked the 3600 stall alot but wanted a little more, My ? is will 3800-4000 be to much for my cam? heres some specs on my motor, 383 11.3 cc306 1.6rr ported lt1 heads,full bolt-ons

 

Too much for what purpose? What rpm do you make max power at? Purely optimizing 1/4m times requires a stall not too far off peak hp. Quite unacceptable for the street due to heat, noise, wear on the motor, mileage, sluggish throttle response under light load, etc. Also, you are drastically changing your low gear ratio, 3.06 to 2.52. So you may not launch nearly as hard (if it hooks up) with the TH350 unless you go BIG on the stall speed.

Rich

Just to elaborate a little. For example.

500ft-lb * 3.06 * 3.73 = 5,707ft-lb at the axles (not including the converter)
500 * 2.52 * 3.73 = 4,700ft-lb

The difference is ~1,000ft-lb!