It will make your C6 a 4 spd. auto. Or a 6 spd. if shifted manually. All the info is on their website. It is probably my favorite mod in terms of driveability.

be here

I'll have to check it out. It's starting to look like this will be the best thing for my money. At first I thought it wouldn't be. The only thing cheaper would be changing to 3:54 gears.

I think the best combo on these trucks are the 460/e4OD.not sure how this would work in your truck,just because of the electronics side of the deal.An E4OD trans has a lock up converter,but I think you can get a remote module to lock the converter.I'm not 100%,but I'll do some more digging on that.My FI 460/E4od gets 11 mpg unloaded and 9-9.5 pulling a 24 ft. Enclosed or My bumper pull camper.I would check in to doing a head,cam and intake upgrade on your truck for a little better performance/mileage when you do your rebuild.Maybe a set of early model heads with some better valves and flow to them.Check out http://www.429-460.com" target="_blank" target="_blank" target="_blank There is a world of knowledge on this site about the Big block Ford.I am very partial to my 460,but the gas mileage deal does weight on my mind from time to time LOL. ---RED