69 Camaro with a 350 and TH350 trans. Intermittent starter engagement - intermittent clicking, won't engage, wont start.. Are there different size flywheels that will fit a TH350 transmission? What is the correct diameter for the flywheel? Correct number of teeth? Have worked on all the typical issues - good grounds, engine, bdoy, freame, installed new starter, new cables, double checked all wiring, fiddled with shimming, but still have the intermittent clicking-won't egage, won't turn. Sometimes no problerm at all, sometimes it clicks and does not engage after only two or three tries, sometimes more. Would appreciate any advice. Merry CHiristmas

 

Probably needs shimmed correctly,common issue with Chevy starters.

 

Check battery voltage at the posts during cranking - should not go below 10.5 volts.
If it does, need a bigger cap battery or a good external charge.