Hi Tim, the small block engines info I got was from a longtime friend and corvette owner and C1 NCRS judge. He said it was a problem in warmer climates on v8 cars. The 90 weight would thin and if they drove up steady inclines, a person could get a lap full of 90 weight through the steering wheel.

Last edited by sstock; 03/08/2018 3:01 PM.
1953 Chevrolet 3100
261 cu inch, sm420, 3.55 rear, torque tube still,omaha orange, still 6 volt, RPO green glass, side carrier spare, all done
In the DITY Gallery
Video of the 261 running

1964 GMC 1000
305 Big Block V6, sm420, the next cab off restoration