[ONQRACIng]

We run a 3.7 twin plug, 13:1 ish (a bit higher), Elgin cams (proprietary grinds) JE 100mm's, GT Plus 104 Unleaded, so far, no issues,besides availability here on the the east coast..

We run Sunoco Standard leaded inour 2.9, and plan on a switch to the same GT plus by weeks end..