The Stovebolt Site Forums The Shop Area Driveline 235 stoye bolt/ 5 speed tranny

What is the best 5 speed overdrive tranny that you can bolt up behind an original 55 second series 235? I was hopeing for one that will bolt to the old belhousing. I see that people use the T-5 alot but I was wondering about a regular 1/2 ton pickup tranny.thanks

Best transmission can be defined several different ways. One might consider the best transmission the cheapest one. Another might consider the best transmission to be the one with the lowest first gear. Others might call the best transmission the heaviest duty transmission, It really depends on what you are really asking.

From your question, I'm assuming you feel a t5 will be a bit to light duty behind your stovebolt 235 in a 55.2, and you are looking for a stronger alternative. I also assume you are desiring an OD to go with your 3.90 factory gears.

I believe a T5 would be more than adequate in a 1/2 ton with a 235, but if you want more options...
A833 (MY6) New Process 4 speed is tough as nails, and almost a bolt in swap. Fourth gear is 0.73:1, or a 27% OD. Not good enough for you? Try looking at a NV4500 5 speed. This 200lb tranmission is found in gm and dodge 3/4 ton pickups. It is very heavy and has the advantage of having a low first gear and a 0.73:1 5th gear. Of course you would need an adapter plate to bolt it to the stovebolt bellhousing, and the adapter plates that are available for the task require extra machining.

The t5 is probably the easiest and cheapest swap. Although I would never put one in a 3/4 ton or larger pickup, or a 1/2 ton with a v8, it should be more than adequate for a 235.

John

the new process A833{my6) Are they an after market tranny or did they put them in trucks. What model trucks? I was hopeing to put an OD tranny in it that kinda looks original.

The A833 was found in gm 1/2 ton pickups in the 80s and early 90s. Be forwarned, the side shifting hurst linkage will come up through the floorboard close to the bench seat.

Anyone have a pic of a A833. How will I know the tranny jusy looking at it? I don't remember any 4 speeds in pickups that didn't just have the normal integral shifter. I will take a trip to my local recicyle yard and take a look.Is it as long as a T-5???

Google is your friend. Here is a link to a tech article I found by simply searching google for MY6 transmission. Remember there is a ton of information out there and available to find if you only search.

http://www.customclassictrucks.com/..._speed_overdrive_transmission/index.html

of course you could also pony up about $3000 for a tremec TKO 500 transmission, but the A833 is a more affordable alternative. It will be necessary to machine the front of the A833 transmission to fit. Again, do a search on this site or others, there is a ton of information on swapping the MY6 transmission.

thanks swing daddy

1981-87 give or take a year, it depends on who is telling the story. There were two styles, the mopar version used a special bell housing and the preferred version has the Chevrolet bolt pattern and will fit your bell housing with a little machining. The version you are looking for is C-15390. You will find this on the case housing.

The casting number on the Mopar version is: C-15475

Here is some information that you may find useful.

From the May, 2009 issue of Custom Classic Trucks

MOPAR VERSION

TRANSMISSION IDENTIFICATION

MOPAR VERSION IN A 52 CHEVROLET TRUCK

Oops! My bad!

the c-15930 was in the 1/2 ton and not the s-10's is that right. I'll take a look soon. thanks

Yes, you can find them in the chevrolet and GMC trucks, they also came in 4 wheel drive versions I think the # is C-15450. Lot's of mopar versions, few Chevrolet truck versions. The casting number is important.

Gotta weigh in on this one. I ran a T5 behind my 350 for 2 years. The unit was out of an 87 Camaro with V6. I long ago outgrew my teen-age need for horsing around with my vehicles, so there was never any undue stress placed on the trans. My feeling was that it would last as long as the engine. I didn't like the gear ratios, and couldn't find one with what I wanted. There are dozens of T5s out there, and several websites devoted to them--mongos garage and british v8 are ones that come to mind. Each t5 has a tag number beginning with 1352- and followed by three more digits. These tag numbers are the key to what the trans came from, the ratios of every gear, etc. I removed the t5 and installed an MY6, aka 89mm, aka A833. The link to the CCT article is a good one. At first glance the 833 looks like a T-10, especially when you see the Hurst 4 speed shifter attached. I like it--20% less shifting, and still have my OD. I also think it is a direct bolt-in to your 55. Mine is in a 57 with 1970 engine. Good luck