Construction rules

6. Maximum 370 Cubic Inch engines. Flat top pistons only. After market steel rods and crankshafts are OK. No stroked or destroked engines. Ask Tech for Clarification. Chevy 3.5" crank ok. 7. Any type ignition is approved. No magnetos. 8. Any intake manifold with a normally aspirated carburetor, 2 or 4 barrel may be used. ................
................