4 Speed Manual tranny and transfer case on Craig's List - Steel Soldiers::Military Vehicles Supersite

aboonski · 02-11-2008, 21:54

I am negotiating with a local who has advertised a totally rebuilt Muncie Rock Crusher four speed transmission and transfer case that came out of a 1987 Chevy pickup - not a CUCV by the way. I went over to look at the item and have never seen such a setup. Pictures on several web sites indicate that it is a New Process A833, not a Muncie. The case is cast iron and the shifter is on the side with shifting rods, etc. I was considering converting my CUCV into a manual transmission and have seen previous threads about the subject. I was wondering if anybody has had any knowledge or experience with the transmission that I have described? The ad is on the Space Coast Craig's List about three days ago. It just looks to be a light duty transmission but the guy indicates it has a granny gear for first but is not an overdrive unit. He has the bell housing which definitely bolts to a Chevy motor and the tranny bolt patern is bizarre! Should I shy away from this thing or what?

clinto · 02-11-2008, 22:10

I am pretty familiar with Chrysler 4 speeds.

There are no granny gear'd A833's. The deepest first gear on a NP833 is 3.09. That is for the 4speed OD transmissions.

got any pics from the ad? There is a machined pad on the passenger side, can he get you the #'s? If so, I can tell you what it is.

aboonski · 02-11-2008, 22:17

C-15453 on the tranny and C-15095 on the transfer case.

aboonski · 02-11-2008, 22:18

Here's the ad that he placed on Craig's List:
i have a new rebuilt muncie rockcrusher tranny w/ transfercase that came out of my 87 chevy fourwheel drive truck with a 350. the motor blew in my truck just after i had the tranny and transfercase rebuilt i spent 2500 gettinig it done im not looking to get that back but will entertain offers and all types of trades comes with bellhousing and shift linkage thanks for looking 321-987-8872

LOGGJAM · 02-11-2008, 22:24

as far as i know the rockcrusher was not put in a 4wd truck they were mainly car 4 speeds and it has a syncronized first gear which would not be a low or granny gear as we call them im not sure of the tranny model that was put in the lighter duty chevys but i know the SM465 was very popular for chevy blazers and pickups in fact every one that i have seen had this trans in it. Ford and crysler used new process 435's or borg warner T18's "top loaders" for most of the years 70-90. If you want to make your cucv stick i would look for the SM465 trans it has the low non-syncro first gear and a 1:1 ratio 4th...no OD. it would be the easiest install

LOGGJAM · 02-11-2008, 22:29

Quote:

Originally Posted by aboonski

C-15453 on the tranny and C-15095 on the transfer case.

the trans with that number is a Saginaw trans 4spd...assuming with the "C" in front of teh number it would be a saginaw as well

aboonski · 02-11-2008, 22:31

Thanks Mike! I happen to have a Muncie M22 rock crusher 4 speed so that's why I kind of saw red flags when I looked at the transmission this guy wanted me to buy. A granny gear would require a much larger case so I really think I will check out the tranny that I already have in a 79 K5 which is a four-speed manual - with a granny gear

aboonski · 02-11-2008, 22:34

You are probably correct about the Saginaw transmission. I went to one web site that had pictures and descriptions of various manual transmissions and it looked like a New Process A833 which the author indicated was used in some GM applications, both 2WD & 4WD as well.

AJMBLAZER · 02-11-2008, 23:16

There were some rare few odd sticks that GM used in the 80's. Believe this is one of them. One was a 4 speed OD that couldn't stand up to the power of a smog era V8 and another was a non-OD 4 speed that also lacked granny gear.

I agree, either go with a SM465 or find a NV4500 and get granny AND OD.

aboonski · 02-11-2008, 23:38

Thanks for the info AJMBLAZER! I just wrote to the guy and informed him that I would not be interested in his transmission/transfer case combo. I have a 1979 K5 Blazer in the back yard that is a trailering special or something like that. It even has a factory roll bar in the back. The four speed in that one might be just what I need although I would have to acquire an aftermarket overdrive to get the total picture that I am looking for.