Engine & Tranny I.D.?

[flyingdiver41]

I recently purchased a 78 CJ7 . How do I tell the difference between the AMC 232 i6 & the AMC 258 i6 / 4.2l engine? I also have the 3-speed manual Transmission . How do I tell if it's the T-18 or T-150 ? Is there a difference between the two as far as robustness and durability.

Thanks,

 

[PaRenegade]

From what I've read, there is a machined pad on the right side of the block between the #2 and #3 cylinders, 4th character is:
AMC 258 i6 / 4.2l = A, B, or C
AMC 232 i6 = E, F L, or G

Heres a link to the T-150 and T-18 , but the T-18 is a 4 speed.
The Borg Warner T150 Jeep Transmission - Novak Conversions
The Borg-Warner T18 & T19 Transmissions - Novak Conversions

 

[flyingdiver41]

From what I've read, there is a machined pad on the right side of the block between the #2 and #3 cylinders, 4th character is:
AMC 258 i6 / 4.2l = A, B, or C
AMC 232 i6 = E, F L, or G

Heres a link to the T-150 and T-18 , but the T-18 is a 4 speed.
The Borg Warner T150 Jeep Transmission - Novak Conversions
The Borg-Warner T18 & T19 Transmissions - Novak Conversions

Thanks for the information!