respecttheseven

are the auto and 5 speed small block the same? so if i have a 5 speed and need a new motor and buy an auto motor everything will match up? ive done some research and all i find is what i need if i want to "convert my auto to 5 speed" but none on the block. i just dont want to spend the $ if it isnt going to work.

TpCpLaYa

iTrader: (10)

i think the rear housing is different (the one that the trans bolts to). You can still bolt up the 5spd to the auto rear housing but either need to drill a few new mounting points or leave 1 or 2 of the trans bolts out.

RotaryResurrection

iTrader: (8)

You can run an auto engine with a manual trans, but you cannot run a manual engine with an auto trans.

The rear iron on the 2 engines differs. The manual engine plate forms a full circle, while the auto engine plate has a cut out on the side for the auto starter to bolt to. IF you bolt a manual trans behind the auto engine, you have a gap there, but it doesn't matter, and there is also 2 trans bolts that cannot be used, but you still have 5 that you can use which is more than enough. But, you could not bolt an auto trans behind a manual engine because there would be nowhere to put the starter.

joeyz87

I know that on the automatic the spark is retarded during shifting to make shifts smoother. hehehehehe.

JaNusSolSumnus

RR has it, the rear plate differs due to the auto bellhousing and starter. I was able to use all the bolt holes for my manual except two when I swapped from an automatic and it holds nicely. The gap is there as mentioned but I dont plan to rally my car so I dont think dirt/water will be a concern.

~Kris

respecttheseven

Guys, thanx so much for the fast responses. Kevin, appreciate your input. I feel secure now to buy this motor.