[Rev]

I think most stock c-4's use a convertor that stalls around 1500-1800 RPM with a stock 289-302. You can do a brke stall test to get an idea. Just hold the brake very hard and stab the the throttle for about 5 seconds and watch the tach to see how high it goes. Don't do it much as it is hard on the trans clutches etc. It will give an idea as to what the stall speed is. Again, I wouldn't do this much.

Rev