Join Date: Mar 2003
Location: Miamisburg Ohio
New To Jeeps and Need Suggestions For Which Transmission
I have a buddy at work who has decided to part with his 1979 CJ5 that he rebuilt in the early 90's. The CJ5 has been sitting for the last 7 years with an unknown motor issue (possibly a spun bearing on a rod). Here is what the CJ5has. Frame looks good and had some help getting coated by engine oil when the motor went. He said when he parked the CJ5, the motor ran but sounded like a helicopter. I have a good 4 bolt Chevy 350 that I plan to transplant into the CJ5 till I can find out what is wrong with the 327.
-79 CJ5 w/ 2.5" lift
-Chevy 327 motor
-Muncie M20 4 speed transmission
-Dana 20 T Case
-Either a Dana 30 or 44 front axle
-Ford 9 Inch rear axle
-Kevlar tub with Kevlar tilt from end
-Full Autometer dash.
-Bucket seats with 4 point harnesses
I'm not sure why he put a Muncie M20 car 4 speed in it, but this is part that I don't care for. I am wanting to switch to a 4 speed truck style transmission and here is where I'm torn on which way to go. Here are the options that I am contemplating.
Locate an SM420 trans (not too easy to find in my area) and get a Novak adapter to mate to the Dana / Spicer 20 T case
Locate an SM465 trans (quite a few around for about $100-150) and get a Novak adapter to mate to the Dana / Spicer 20 T case
Locate a Ford T18 trans and get a Novak Adapter to mate to the 20 T case
Locate a T-176 and Dana 300 T case combo and get an Iron Duke bellhousing to mate up to the small block Chevy motor.
All options seem to be in the same ball park in regards to money. What do you guys think would be the best route to go? This Jeep will mainly be driven on the road with a fair amount of offroad trips, mainly to Tennessee. Nothing too extreme though. I would say it would be about 60/40 to 70/30 street to offroad driving. Thanks in advance for any help you guys could give me.