Build sheet ?
 

If your Gbox build sheet says M17 3 spd sync trans.
What does it mean?
3 speed manual?
M17 is that munice?

Re: Build sheet ?
 

This list could help
M08 : TRANSMISSION, MAN 4 SPD, BORG WARNER, 77MM, 3.50
M10 : TRANSMISSION, AUTO 4 SPD, ISUZU, ELECTRONIC CONV
M11 : FLOOR SHIFT TRANSMISSION
M13 : TRANSMISSION, AUTO 4 SPD, HMD 4T60-E, ELECTRONIC
M15 : TRANSMISSION, AUTO 4 SPD, HMD, 4T65 – E, ENHANCED
M17 : TRANSMISSION, MAN 4 SPD, MUNCIE, 76MM, 3.31 1ST
M20 : TRANSMISSION, MAN 4 SPD, 117MM, 6.55 1ST
M21 : TRANSMISSION, MAN 4 SPD, 82MM, 2.43 1ST
M22 : 4 SPEED H.D. TRANSMISSION (MUNCIE)
M26 : TRANSMISSION, MAN 4 SPD, MUNCIE, 76MM, 3.50 1ST
M27 : TRANSMISSION, MAN 5 SPD, GETRAG, 84MM, 2.46 1ST
M28 : TRANSMISSION, MAN, 6 SPD, BORG WARNER
M29 : TRANSMISSION, MAN 6 SPD, BORG WARNER 85MM, 2.97
M30 : TRANSMISSION, AUTO 4 SPD, HMD, 4L60E, ELECTRONIC :wink:
M31 : TRANSMISSION, 4 SPD, AUTO THM 250 CONV CLUTCH
M32 : TRANSMISSION, MAN 5 SPD, ISUZU, 76MM, 3.72 1ST, .70
M33 : TRANSMISSION, AUTO 3 SPD, TORQUE CONV
M34 : TRANSMISSION, AUTO 3 SPD, THM 125
M35 : POWERGLIDE AUTOMATIC TRANSMISSION
M38 : TURBO 350 AUTOMATIC TRANSMISSION
M39 : TRANSMISSION, MAN 5 SPD B0RG WARNER, 77MM, 2.95
M40 : TRANSMISSION, AUTO 3 SPD, TORQUE CONV VAR 1
M49 : TRANSMISSION, MAN 5 SPD, BORG WARNER 77MM, 3.75
M50 : TRANSMISSION, MAN 5 SPD, NVG
M51 : TRANSMISSION, MAN 6 SPD, ISUZU
M55 : TRANSMISSION COOLER
M62 : TRANSMISSION, MAN 3 SPD, 76MM, 2.85 RATIO
M63 : TRANSMISSION, AUTO 4 SPD, ZF, NON ELECTRONIC
M64 : TRANSMISSION, MAN 3 SPD, 76MM, 3.5O RATIO
M73 : TRANSMISSION, MAN 4 SPD, ISUZU, 77.5MM, 4.09 RATIO
M75 : TRANSMISSION, MAN 5 SPD, 77MM, 3.40 1ST
M77 : TRANSMISSION, MAN 4 SPD, BORG WARNER, 77MM, 4.07
M79 : TRANSMISSION, MAN 5 SPD, ISUZU, 72MM, 3.41 1ST

Re: Build sheet ?
 

That's odd mine reads M17 3 speed sync trans

Re: Build sheet ?
 

The noun names can vary a little bit depending on how they were typed into the plant database; the RPO designation is what matters.

K

Re: Build sheet ?
 

Just wondering what came stock.
Anybody know what 3 spd sync trans would stand for?

3 on the tree?
3 spd automatic?

Re: Build sheet ?
 

Edited because I was wrong initially: M17 is the Muncie four speed with a 3.31 1st gear, as shown in the table above!

Re: Build sheet ?
 

I think the confusion lies in the fact that the table says M17 is a 4-speed. If your truck has a manual shift column, then it was likely originally a 3OTT.

Re: Build sheet ?
 

Memorize this:

https://www.gmheritagecenter.com/doc...olet-Truck.pdf

RPO codes also get re-used, so it is best if the reference list is from the same timeframe as the subject vehicle. I should have caught that in my first response.

K

Re: Build sheet ?
 

Yes glove box says M17 3 spd sync

My column is auto and the truck has 3 speed floor shift.

Trying to find out if the trans is stock.

Re: Build sheet ?
 

Then - no - it's not stock.

"M17 3 spd sync" is a manual trans, column shifted. No floor shifted three speed trans was available.

The automatic trans column is also a more recent addition. Sounds like you have an assortment of mis-matched parts.

K

Re: Build sheet ?
 

Yeah I blew that one (but have since fixed the post), read the wrong line!

Re: Build sheet ?
 

Humm so the trans may be the stock 3 speed with aftermarket Hurst floor shift. And the column is definitely from another truck.