The Stovebolt Site Forums The Shop Area Engine Shop A833/ MY6 shift pattern

I was considering getting one of these transmissions but I don't like the idea of 3rd and 4th gears being in odd places in the shift pattern. I was wondering if it's possbile to re-work the linkage to get the shift pattern to match "normal" four speed transmissions. Has anyone done this?

The shift pattern is normal, R,1, and 3 up; 2 and 4 down.
The 3/4 arm points down on the shift shaft:
http://www.bowfinanglers.com/images/833b.jpg

I agree - the shift pattern is normal. Reverse seemed a bit tricky to find at first (i.e. over to left and up). I will be installing a New Process A-833 in my '49 Chevy 3600. One guy said I would be happier with a Saginaw 4-speed or a BG T5 5-speed. Any Stovebolters out there running an NP A833? How do you like it?

Thanks,
Dan M.

The ads I've seen for them state that 4th is in the right-forward slot and third is right-back. Is that incorrect?

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=170268377122&ssPageName=STRK:MEWA:IT&ih=007

I have the A833/MY6 installed in my 63 Chevy C20 with a 292, and love it. Haven't had a chance to put that many miles on it yet. I have 4.10 gears in the back, and the gears are great, much better than the SM420.

The shift pattern is the same as all other 4 spds with the exception of reverse. Reverse is as stated left and forward. Had to shorten the drive shaft about 9 inches.

Larry

shift pattern is: (ignore the little``` things)
R````1`````3
|____|_____|
`````|`````|
`````2`````4 (overdrive)

I have had excellent luck with my 89mm. I run a bored out 261 with a 9" Ford with 3:50 gears. 2000 rpm is 65-67 mph in overdrive. First gear is a little fast for a parade gear--if I would slow my engine idle down it would be perfect.

BE CAREFUL which version you get. The MOPAR version A833 will have a fine splined input shaft with a much larger pilot bearing stub that the GM. I believe the GM is something like 10 splines and a 1/2" pilot bearing stub while the MOPAR is 21 splines and a 7/8" pilot bearing stub. The mopar input shaft is at least one inch longer than the GM input shaft. Also the transmission will not bolt up to a GM bell housing. A fellow 'Bolter (Ken) and I had figured out how to make an adapter plate to mate the MOPAR tranny to a GM bell housing but I ended up finding a GM version so now the MOPAR tranny I bought will either be sold or used as an internal parts source for my GM 89mm.

The input bearing housing on the 89mm will need to be machined (O.D. reduced) to fit a bell housing that previously used a Muncie SM420 or other vintage tranny. The more modern bell housing for the Muncie SM465 has the correct diameter. I took the bell housing I wanted to use and the input bearing housing to my machinist and told him I wanted to fit this bell housing to this input housing. He bored some material out of the bell housing bore and turned the input housing to match and it worked great.

Hi Larry -

What size tires are you running on your truck?

Thanks!
Dan M.

Dan, I'm running 265/75/16, and my engine is a fresh rebuild, .0625 over, RV cam, headers, other wise stock.

Larry

Thanks, Larry.

Have you had any problems with the big jump in gear ratios between 1st and 2nd gears?

I just got my 261 back from the engine shop and plan to have it running this winter. What intake/carb setup are you running and how do you like it?

Dan M.

Dan, I haven't notice a problem between 1st and 2nd. The 292 has the bottom end torque of a 350 and with the 4.10 gears... My 292 will break the rear tires loose without much problem. I'm still running the stock intake with a Monojet. I've got an Offy intake and Quadrajet I was working on to replace the current carb and intake.

Larry