A833 MY6 OD trans - The 1947 - Present Chevrolet & GMC Truck Message Board Network

NicoSlam · 03-17-2010, 03:29 PM

I just picked up an MY6 OD trans and I'm getting ready to replace the saginaw 3 on the tree. Although I like the function of the three speed, I hate running over 3000rpm's on the highway. My engine is a 250. Does anyone have experience with this tranny that could give their opinion before I start cutting the floor of my truck. I know the gap between 1st and second is big. Do you feel that difference? I'll update with pics when the I get started. Pics would be great.

**SOON2BLAZE** · 03-17-2010, 04:18 PM

I put one in my 2wd blazer, and it's sweet! The gap is big, but acceptable. I got a high hump with no hole and cut into it. No pics of it at this time. They came stock with a hurst shifter and a good place for parts is : http://www.drivetrain.com/parts_cata..._gm_truck.html
They rebuilt mine. not sure why aluminum case is not listed, but they do have parts and kits for them.

NicoSlam · 03-17-2010, 04:24 PM

I'm excited as I currently just replaced front and rear seals and put a gasket kit on. I didn't want to go to the expense of a complete rebuild if it doesn't pop out of gear, grind or hum due to bad bearings. I guess I'll need to buy a high hump cover or will the current one work?

**SOON2BLAZE** · 03-17-2010, 06:50 PM

I'm not sure if the current one work? What kind do you have? if you have a low hump I beleive it would, if you have a high hump, the shifter will be much closer to the seat than current hole for a factory four speed would allow for. Also the shifter is mounted to the drivers side of the trans, rather than being a top loader. There are other members that I have talked to about their np A833's here on the board, but don't remember who they are. Another thing to consider are drive shaft length and crossmember placement. Everything I've read states they are the same length as a th350. I was able to replace a SM465 and retain the same bell housing and crossmember postion. Good luck

NicoSlam · 03-29-2010, 09:28 AM

Finally attempted to do the 3-speed to MY6 swap. Everything was going smooth until I wasn't able to slide the tranny in due to it hitting the cab floor. Looks like the tranny is 1/2" taller then a 3-speed when measuring from the top of the input shaft retainer. I hate to cut into the cab floor especially when it is the only floor section that looked imaculate. Anyway, is there any options out there to raise the floor a tad? I was surprised that it doesn't have a service access as my old 1952 chevy. Anyway any suggestions would be good as I plan to get it in this weekend.

**425HP409** · 03-29-2010, 10:13 AM

I am sorry, but I don't know what an MY6 transmission is. What did they come in?

NicoSlam · 03-29-2010, 10:16 AM

Thye came on the early 80's chevy 1500's. Its a 4-speed OD floor shift. Identical the older A833 used in the mopars but with the chevy bolt pattern

**tkeduk8r** · 03-29-2010, 03:10 PM

Look up board memeber "Green Machine". He has done this and had a nice success with it...
--Mike

Keith Seymore · 03-29-2010, 03:57 PM

I ordered my '87 with that trans and I love it.

It's smooth shifting and pleasant to drive, and of course the overdrive is a plus.

My truck came with the "high hump floor" (like a 4x4) from the factory, even though it's a 2wd.

K

Keith Seymore · 03-29-2010, 03:59 PM

Quote:

Originally Posted by 425HP409

I am sorry, but I don't know what an MY6 transmission is. What did they come in?

Here's a good link, with history, gear ratios, etc.:

http://www.customclassictrucks.com/t...ion/index.html

K

NicoSlam · 04-01-2010, 03:17 PM

Well I was able to borrow a high hump cover while I waited for the one I bought to arrive. I put the trans in last night and realized the bottom tranny ears are not threaded so I had to buy longer bolts and nuts. Anyway, It went in easy and its almost ready to test drive. pics coming soon.

V10farmboysdream · 10-07-2013, 12:24 PM

What gears are best with this trans. Ive got an 87 4x4, v10 with 3.08's front and rear. I just picked up the trans and im thinking ill have to jump up to 3.73's. Ive got a 383 stroker in it, but don't want to be to hard on the clutch. Im currently running 2500 rpms at 70mph

Keith Seymore · 10-07-2013, 03:22 PM

Quote:

Originally Posted by V10farmboysdream

What gears are best with this trans. Ive got an 87 4x4, v10 with 3.08's front and rear. I just picked up the trans and im thinking ill have to jump up to 3.73's. Ive got a 383 stroker in it, but don't want to be to hard on the clutch. Im currently running 2500 rpms at 70mph

I like my 3.73's.

K

03-17-2010, 03:29 PM	#1
NicoSlam Registered User Join Date: Nov 2009 Location: San Antonio TX Posts: 251	A833 MY6 OD trans I just picked up an MY6 OD trans and I'm getting ready to replace the saginaw 3 on the tree. Although I like the function of the three speed, I hate running over 3000rpm's on the highway. My engine is a 250. Does anyone have experience with this tranny that could give their opinion before I start cutting the floor of my truck. I know the gap between 1st and second is big. Do you feel that difference? I'll update with pics when the I get started. Pics would be great.

03-17-2010, 04:18 PM	#2
SOON2BLAZE Account Suspended Join Date: Aug 2005 Location: Southern UT Posts: 906	Re: A833 MY6 OD trans I put one in my 2wd blazer, and it's sweet! The gap is big, but acceptable. I got a high hump with no hole and cut into it. No pics of it at this time. They came stock with a hurst shifter and a good place for parts is : http://www.drivetrain.com/parts_cata..._gm_truck.html They rebuilt mine. not sure why aluminum case is not listed, but they do have parts and kits for them. Last edited by SOON2BLAZE; 03-17-2010 at 04:19 PM.

03-17-2010, 04:24 PM	#3
NicoSlam Registered User Join Date: Nov 2009 Location: San Antonio TX Posts: 251	Re: A833 MY6 OD trans I'm excited as I currently just replaced front and rear seals and put a gasket kit on. I didn't want to go to the expense of a complete rebuild if it doesn't pop out of gear, grind or hum due to bad bearings. I guess I'll need to buy a high hump cover or will the current one work?

03-17-2010, 06:50 PM	#4
SOON2BLAZE Account Suspended Join Date: Aug 2005 Location: Southern UT Posts: 906	Re: A833 MY6 OD trans I'm not sure if the current one work? What kind do you have? if you have a low hump I beleive it would, if you have a high hump, the shifter will be much closer to the seat than current hole for a factory four speed would allow for. Also the shifter is mounted to the drivers side of the trans, rather than being a top loader. There are other members that I have talked to about their np A833's here on the board, but don't remember who they are. Another thing to consider are drive shaft length and crossmember placement. Everything I've read states they are the same length as a th350. I was able to replace a SM465 and retain the same bell housing and crossmember postion. Good luck

03-29-2010, 09:28 AM	#5
NicoSlam Registered User Join Date: Nov 2009 Location: San Antonio TX Posts: 251	Re: A833 MY6 OD trans Finally attempted to do the 3-speed to MY6 swap. Everything was going smooth until I wasn't able to slide the tranny in due to it hitting the cab floor. Looks like the tranny is 1/2" taller then a 3-speed when measuring from the top of the input shaft retainer. I hate to cut into the cab floor especially when it is the only floor section that looked imaculate. Anyway, is there any options out there to raise the floor a tad? I was surprised that it doesn't have a service access as my old 1952 chevy. Anyway any suggestions would be good as I plan to get it in this weekend.

03-29-2010, 10:13 AM	#6
425HP409 425hp409 Join Date: Oct 2008 Location: Prosper Texas Posts: 841	Re: A833 MY6 OD trans I am sorry, but I don't know what an MY6 transmission is. What did they come in? __________________ Charles 68 SWB, Dad bought new, now 396 & factory ac 64 Impala SS, 409 425HP, 4 speed AC 64 Bel Air Wagon, 400 Small Block 57 Bel Air all original 283 w/Factory Air 77 GMC Sprint, 454/425HP 67 Olds 442, all original 90 ZR1 Corvette

03-29-2010, 10:16 AM	#7
NicoSlam Registered User Join Date: Nov 2009 Location: San Antonio TX Posts: 251	Re: A833 MY6 OD trans Thye came on the early 80's chevy 1500's. Its a 4-speed OD floor shift. Identical the older A833 used in the mopars but with the chevy bolt pattern Attached Images

03-29-2010, 03:10 PM	#8
tkeduk8r Senior Member Join Date: Apr 2001 Location: Alexandria, MN Posts: 1,462	Re: A833 MY6 OD trans Look up board memeber "Green Machine". He has done this and had a nice success with it... --Mike __________________ 63 C20 2WD, 230/SM420/4.11 73K 68 C30 dump truck, 327,SM425,4.56 66K original 68 C10 2WD SWB Stepper, 250/3-tree/3.73 66K.... Wifes 68 Buick Skylark Custom Conv., 350/TH400/2.56 In our family since '79 69 GMC 1500 SWB 2WD, 350/TH350/3.73 posi... 70 K10 SWB 4X4 4-sp,ps, pb, tilt, buckets, console, sliding back window (Need AC parts) WIP 72 Chevy K20 4x4 350/350/205/4.56 donor 72 Vette 350/M21/3.70 posi, triple black and super fast 84 Olds Cutlass Brougham 350/2004r/4.11 was Dad's

03-29-2010, 03:57 PM	#9
Keith Seymore Registered User Join Date: May 2009 Location: Motor City Posts: 9,226	Re: A833 MY6 OD trans I ordered my '87 with that trans and I love it. It's smooth shifting and pleasant to drive, and of course the overdrive is a plus. My truck came with the "high hump floor" (like a 4x4) from the factory, even though it's a 2wd. K __________________ Chevrolet Flint Assembly 1979-1986 GM Full Size Truck Engineering 1986 - 2019 Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926 My Pontiac story: http://forums.maxperformanceinc.com/...d.php?t=560524 Chevelle intro: http://www.superchevy.com/features/s...hevy-chevelle/ Last edited by Keith Seymore; 03-29-2010 at 04:00 PM.

04-01-2010, 03:17 PM	#11
NicoSlam Registered User Join Date: Nov 2009 Location: San Antonio TX Posts: 251	Re: A833 MY6 OD trans Well I was able to borrow a high hump cover while I waited for the one I bought to arrive. I put the trans in last night and realized the bottom tranny ears are not threaded so I had to buy longer bolts and nuts. Anyway, It went in easy and its almost ready to test drive. pics coming soon.

10-07-2013, 12:24 PM	#12
V10farmboysdream Registered User Join Date: Feb 2013 Location: Markle indiana Posts: 42	Re: A833 MY6 OD trans What gears are best with this trans. Ive got an 87 4x4, v10 with 3.08's front and rear. I just picked up the trans and im thinking ill have to jump up to 3.73's. Ive got a 383 stroker in it, but don't want to be to hard on the clutch. Im currently running 2500 rpms at 70mph

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