[Bob Bidonde]

Synchro909,
No need to worry about my toes. I agree that the main bearings in the Model A can be problematic, but the higher bearing stresses are in the connecting rods. All of the main bearings in the engine are subjected eccentric loading from the crankshaft when it deflects, but the center main gets the worst of it because it reacts two segments of the crankshaft.

The Model B engine is more durable than the Model A engine because of its larger diameter main and rod bearings, its pressurized oiling system and I believe the Model B has a stiffer crankshaft.

Jim,
Your accomplishments are fantastic! The maximum speed I have ever done in my Coupe when it was running a souped-up Model B engine was 80 plus with the stock differential. It had more throttle left, but the Coupe's front suspension was scary.