The Marauder crowd has kind of figured out that in a 4,000+lb car 500/500 is a good cut off point for a stock 4r70w. The 4r75w is apparently good for more and is the one I got to put in mine. Multiple guys making a LOT more than that on bone stock 75ws with manual valve bodies. I got a PM from a user on the corral with times and a dyno sheet and hes over 700 ft lbs on the stocker with a silverfox MVB.
