Not entirely true. Some Iron Dukes came from the factory with a T-176. I just sold one out of an '82 CJ-7. They're not as common as the SR-4, but they're out there (and they make a great candidate for a SBC swap).RockJeep92504 said:They only came with the SR4. A Crappy 4 speed.
81 was the last year they used them and, I believe, the SR4. The original setup in my scrambler was the Iron Duke and an SR4.jcp said:Correct me if I'm wrong but I thought the Gm Iron duke was not used after 79 or mid 80 and after that it was the amc 2.5 four cylinder.
You are right. I mixed up the years for the engine vs SR-4. The SR-4 was only used in 80 and 81 according to this link: http://www.off-road.com/jeep/swb/articles/specgrid.htm1x1_Speed_Craig said:Iron Dukes were used from '80 to '83.
In reference to the GM bolt pattern being used and the 904 having a GM pattern and or other jeep trannies that have GM patternrock-rod said:They also had TF904s behind them in auto equipped CJ-7s.
Super duper rare though, and not offered in the CJ-5.
This version of the 904 could be used with a Chevy V8, but it required a custom converter and some beefing to help it survive. If anyone remembers Jason Bunch from Tri-County, his old yellow flatty had this set-up in it.