Oldsmobile 4L80E Street Frame

This resource contains a transmission pan shape ID chart and other tips to help with identifying GM transmissions.

This is more than the story of a vintage sprint car. It's also the story of how a dynamic duo of "Speedy" Bill Smith and Jan Opperman toppled giants at the 1976 Hulman Classic.

In this episode of our C10 build series, we swap cams in a junkyard 5.3 and make surprisingly big power.