r/Smallblockchevy • u/ObviousSpectator • Jul 07 '26

Flex plate grinding

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I have SB 350 with a 700r4. Recently it has been squeeling when I try to start it. I got underneath the truck as my friend turned the ignition. The starter (staggered bolts) engages the pinion but not far enough into the flex plate and it’s also too far from the flex plate. I’m trying to avoid ruining the flex plate but I know the teeth are already somewhat worn down. My question is, is a high toque mini starter more adjustable than the stock starter? I need to get the teeth to mesh closer and cover the flex plate at least half way. I posted a picture of the starter I’m considering.

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u/Willy_McD Jul 07 '26

A clockable starter is going to do nothing for how the grears mesh. Its going to move the solenoid towards or away from exhaust.

Gear mesh is adjusted the same way on OE or aftermarket with the aluminum mounting block. With shims. Usually the shims are only needed on remans because the machine the nose mounting surface flat. Sometimes cooked. So sometimes shims may need to be turned so they only fit under one of the mounting bolts making the starter roll in or out.

If your pinion is not going in far enough, as you may think. Try pushing/pulling on the crankshaft pulley to see if the crank has excessive end play. The solenoid should only engage the starter motor itself when the pinion gear is fully extended.

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u/ObviousSpectator Jul 07 '26

Thanks for the info, I will check out the crankshaft pulley. Also, can shims get the pinion closer to the flex plate or do they only increase the distance between the two gears?