Ozzstar

Opened up the guts on my '93 LT1 and was wondering what this part in the pic is/does? It is located in the back of the valley towards the firewall.

Working on cars for years and couldn't figure this one out.

Anyone know? Thanks in advance

gdl2165

That would be the oil pump drive. There's a toothed gear on it that runs against the cam shaft, which then turns the shaft for the oil pump.

JackDidley

Its function was done by a distributor In an old school small block.

mtwoolford

it may also be referred to as a "stub shaft"