I sprayed 150 shot on my demon with KB hyper pistons 100's of passes and never had a issue. I even tried 175 a few times. I always turned my timing down to *28 on pump gas and make sure you read the directions about ring gap.

1.33 60 ft,6.21 at 110.59 in the 1/8, pump gas small block,2950lbs,drag radials,mufflers and driven to track ...