[7302]

I have a 1953 chevy with a straight 6 and was thinking of putting in a sbc. my question is will the sbc work with the stock manual 3 speed trans, an what would i have to change.

[poncho62]

Car or truck?
Chevy car is a closed driveline. I guess there is an adapter available....but, if it was me I would go with the v8, later transmission and and open drive rear end

[techinspector1]

Agree with Poncho. The driveline that's in the car now was designed for less than 100 hp and probably won't last long in back of the 200-250 hp of a very mild 350. I'd begin with a 350 that is mated to a 3-speed from a later vehicle, together with the differential and driveshaft from the same vehicle. Here's the motor mount kit....
http://www.tdperformance.com/images/...ginal/4196.pdf
Snag the transmission crossmember from the same vehicle where you get the differential and make it work or purchase a universal swap crossmember with the proper drop to make it work....
Universal Fit Transmission Crossmembers
Your car has leaf springs, so pull the differential from a leaf spring car and you can probably just bolt the differential in if you get one that's about the same width as your '53 differential.
Once you get the whole mess in, sit the car on its wheels, insert a transmission yoke into the back of the transmission. Push it all the way into the trans until it bottoms out, then pull it out 3/4". Now measure between the center of the u-joint yoke at the pinion and the center of the u-joint yoke at the transmission. This is the figure that you'll want to give the driveshaft shop to make your driveshaft. Any driveshaft shop can do this work.