chevy conversion question.

I am converting my 67 cj5 to a chvey 350, I know this is sacralige to most of you guys here, but I am asking anyway. I know my t86 will not hold up to my new motor. I want to go to a stronger gearbox. I dont want to use a muncie because the adapters are so expensive. If I use a t150 three speed or a t18 4 speed what bellhousing part number will I need. I know the t18 from ford trucks have a long input shaft so I am trying to find one from a jeep. I know it can be done, but I am having a hard time trying to find this info. Thanks for any help and suggestions .

 

look into the SM 420 or 465 both are chevy trannys so the bellhouseing will match up. then you only need one adapter instead of 2 like i did. also they have even lower 1st gears then the t-18a

 

Will either of these transmissions bolt to a d18, or d20 ? do they need adapters?

 

I should have been more clear, do either of these require adapters to bolt to the transfer cases I mentioned. Thanks for the help

 

The t150 might but the t18 definitely not without an adapter.

 

About $500 for the adapter from Novak to mate the SM to the D18. Saving up for it myself.

Don't feel bad, gotta small block chevy in my '63.

 

im sorry i should have been more specific. yes you will need an adapter to go from the tranny to the t-case but you wont need a bellhousing adapter. i made the mistake of chevy motor ford tranny jeep t-case. the only reason i call this a mistake is that well after giving Advance adapters my credit card number for a $1,400 order ( ordered motor mounts also and some other little stuff) i found an SM in the junkyard.

 

You don't need an adapter for the Ford T18 to the bellhousing. But you do have to modify the bellhousing slightly. http://www.novak-adapt.com/ has a lot of info on these swaps.

 

The T150 is a Ford-pattern transmission, so even if the TC end bolts up, you'll need to adapt the engine end http://www.novak-adapt.com/catalog/kit_g150.htm <edit> I recall there is a Jeep bellhousing you can use that goes from the early XJ V6 to the Ford-pattern transmission. Not sure if it will fit the T150 though.

The SM420 or SM465 bolt up to a GM bellhousing, but you'll need to buy an adapter for the TC end.

A Ford T18 can be made to fit the GM bellhousing http://www.novak-adapt.com/knowledge/ford_to_gm.htm You still need to adapt the TC end with an aftermarket adapter or using parts from a Jeep or IH 4x4 T18. Probably the cheapest route if you can scrounge what you need.

 

I have to agree with going with the 465 and a 1 in. adapter for a shorter overall package. While the 420 is a shorter transmission, the adapter has to be at least 4 in. long to allow for the D-18 front drive shaft U-joint to clear the reverse gear buldge on the right side of the 420. In the 465, the reverse buldge is on the other side of the transmission. I learned the hard way. With a 350, SM-420 and D-18, my rear drive shaft is only 13 in. long.

 

I'm running a Chevy 283 with an SM-465 and a Dana 18 T-case. The SM465 bolts right up to the Chevy and they're really easy to find. I had to get an adapter to bolt the 18 to the 465 though. It works really nice, put over 25,000 miles on it so far.

 

I was wondering if anyone had considered using a custom bellhousing instead of an adepter. I have used them quite often in drag raging as well a dirt track auto racing. Lakewood makes a wide variety. I was thinking about the t18and a dana20 transfer case. I think I have a t18 out of an old international pickup my grabdfather gave me. The truck isnt worth anything, but last time I looked at it I believe it was a 4 speed. I looked on the web and some of these old trucks (about 62ish) had t18 in them. I am going to check it out in a few weeks when I go home (oklahoma) for christmas. I was just trying to get some thoughts on the aftermarket bellhousing instead of adapters. Any thoughts?

 

Why a d20? Same requirements to mate to any of the trannys listed, and centered rear output and higher lo-range ratio. Do you really want to change rear ends?

JB

 

would use the 465 and 1" adapter if it where mine.

 

I'm with 66, no question I would use sm465, 1"novak and d18. Very, very clean.

JB