I got some feedback from Camaros.net that the flexplate may be flexing under load just enough to contact the tip of the starter. It was described as sounding like a power steering squeal from the lower part of the motor.
I once again dropped the shroud to check for contact. Clearances all look good but I backed off the 2 starter mount bolts anyhow, wedged a flathead screwdriver between the flex plate and starter gear and re-tightened the mount bolts. I thought this might give just a little extra gap in case it was a clearance issue. I just took the car out and it is still there but only doing it in 1st gear under power and with each shift point. I am going to install the starter ring spacer that came with the mini starter and see what that does. Fingers crossed.
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69 SS396 Camaro Coupe, 4link, 12bolt posi, Speedtech LCA and UCA's, Hotchkis 2" drop springs and sway bar, Ridetech triple remote resevoir coilovers, Bilsteins, Wilwood 6 piston front/4 piston rear, Magnaflow stainless exhaust, Lemons Headers, Comp rollers/p-rods/cam, Fikse 18x8.5 and 18x10
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