Starter bolt pattern.
 

Okay all you smart folks. Can you answer me this question? I have a 69 C-20 with a 350 and the starter has a staggered bolt pattern. Is this the same with all 350's of the 67-72 trucks. I know that some flywheel were 153 tooth and some were 168 tooth in the GM line. Are all the small blocks the same from a starter perspective. The hi torque mini starters seem to be with the bolts in line with each other. Thanks, Don

The staggered pattern is for the 168 tooth flywheel/flex plate. The other pattern is for the 153 tooth flywheel/flex plate. I have not seen any truck 350's with the 153 tooth flywheel, but there seems to be exceptions to everything.

We only use the 168 tooth setups as it should give the starter an advantage.

Jim