The Stovebolt Site Forums The Shop Area Driveline Engine\trany identification

Trying to find information for an upcoming project.
The PO has put a Chevy small block and 6 speed trans W/PTO into an early '49 2 ton COE!
Here's what I'm trying to identify:
It is a small block couldn't find any obvious block numbers, Chevy red/orange, 2bbl carb, dist in the rear with little door to adjust dwell.
Right side exhaust manifold has the alt/gen mount cast onto it.
Obviously came out of a truck because the trans came with it. 6 speed with PTO, shift pattern - reverse toward driver and back 1-6 in a double H.
The rear engine mounts are on the bellhousing and appear to bolt right into the original frame cross member. Because the engine is shorter than the inline 6, the front mount (single in the center) is mounted on a piece of heavy channel behind the front cross member. This allows the engine to sit a little lower.

I think the 6 speed is the clue since I've found very few references to a Chevy 6 speed.

All the info and pics are in Big Bolts: thread - Maybe CEO project.

On the back of the engine where it bolts to then bell there will be cast numbers

Hy again Jim Sears, I seriously doubt that you have a six speed transmission there, five speeds were the norm back in the day. A five speed will have seven different gates, neutral, first/low, second, third, forth, fifth, and reverse, some transmissions shift patterns are laid out in a double "H" pattern and some have an "L" on each edge of a single "H", hope that helps.

Now that I think about it some more you might have a pretty late model (01-07?) GM only ZF 6 speed as used in medium duty trucks.
I think the similar ZF 6 speed used in the GM pickups had integral bellhousing and the medium duty transmission was without bellhousing.

If it is, and before you do away with the transmission, I'd be interested.

Grigg

From his description of the shift pattern it isn't a ZF-6 used in GM trucks. Ford put basically the same tranny in the Diesel Superduty trucks from 99 thru about 07 (maybe later). I have one of those and the shift pattern (going top to bottom and left to right) is R,L,1,2,3,4,OD, with OD hanging out to the right and away. I believe the GM equivalent used the same shift pattern. They also split vertically with a very short main section and front and rear covers bolting to it. The housing is aluminum.

It will be very interesting to see what it is when I get to the project. It definitely has a spring loaded reverse gate that's toward the driver and back. I watched the client as he shifted through the forward gears several times, he counted 6 and it sure looked like he was finding them.
Thanks guys