Found a TRS drive for sale but not sure what it came out of. The serial number on it is 4203586. Any help would be great. Says it is from a 1980 sea ray but don't know which engine combination. Did the TRS only come on big block equipped boats?

Most were behind Big blocks, sometimes small blocks. Make sure its not locked up .

Wannabe

Was offered behind small block, (280TRS) also. All were 1.5:1. Spin the U-joint yoke shaft, if the prop shaft spins in the same direction, it's a left hand unit.

if the case looks good, buy it. gonna get scarce. youngest TRS is almost 30 years old...