Perhaps a weird question: Is it possible bold an A-ford gearbox to a Ford flathead 6 engine? I know there are better options but I wanna keep the a-ford rear-axle and driveshaft unit............
Your problem may be elsewhere...the V8 and flathead six trans (pre-49 hardware) bolt right up to Model A tube and rear, as in the common A-V8 conversions. Pretty sure this will extend to '49-51 6's with right bellhousing and stuff. The problem will be up front as the 6 is longer than flathead V8 or four...you will have to shorten the tube and move engine back, or lengthen the frame up front.
The plan was to shorten the tube. Ok, so the V8 and flathead six trans bolt right up to Model A tube and rear. Hmmm, need to investigate that! Thanks.........
With '32-48 transmission: Use any of the rear mounts that fit the trans, perhaps choosing one that is good for the crossmember you will use. U joints interchange, but don't use the early Model A U joint with riveted construction...get the later A through 1948 kind that is all forgings. The cup that covers the u-joint and the bigger outer cup on the torque tube need to be V8 pieces, anything from '32-48, as all the bolt holes on the Model A parts are arranged wrong. Which flathead 6...does if have the flat distributor on the front of engine or the vertical distributor on side?
Hi Bruce, the ignition on the engine that I'm offered for a very good price is on the side. Its a running engine. I'm collecting parts for a A-ford speedster and would love to use a flat-6 but before I buy it I need to know what gearbox to use. He also has gearbox 3-on-the-tree with Overdrive but have no idea what it is. What kind of gearbox is this?
That engine could be a '47-8 with proper bell for early Ford, but if the trans is from it, it is probably a '49-51 Ford (if 1A is on side, 1951). That trans would be open drive, no good for your rear, but a bell housing from a '47-8 or a later truck would adapt it to early V8 transmission to attach to Model A rear. The six with ignition on front was used about 1941-47. The two engines are closely related.
Ah! That makes more sense for this engine than a normal Model A body...youd' have no place for your feet in a Model A with two cylinders back through the firewall.