Re: build 66rfe for jeep
This is all I can remember.
Some 545s will have some of the 68parts in them. Not sure what year that started. 08 would be my guess.
I know there are parts that have to go together. But I can't remember which ones.
You will need the newer valvebody. Like a 66rfe one.
My opinion is if you change the ratios, the jtec controller will see the wrong expected output shaft speed and set wrong gear ratio codes.
That seems like alot of work to make somthing that might not work. Still have only 4 gears up. Not 5, when a 545 does a great job how it is. Also my opinion.
13 Durango 5.7/66rfe
05 LJ 4.0/370/241OR/D44/D44 4.10s 37"mtr
01 XJ 4dr 4.0/AW4/231/D30lp/D35 4.10s 30" BFG
98 xj 2dr 4.0/AX15/D30hp/231/8.25 3.07s 33s