The Dozier Hargety Chrysler 8 is a record holder. A few Cad flathead V8, also blown, did good. A few Ford six cylinder cars run. Both flathead and OHV. So far no records. Bruce Crower had a very fast Nash straight eight. It is really up to you and how creative you are
ProChargers are allowed along with any other belt driven supercharger just no turbos with a vintage car class.
AIR should have never allow any Chevrolet V8 or Chrysler Hemi?s then the class would been as really was desired. There is a MEL now competing I believe.
Appreciate the clarification and pointers on successful XO motors. The exhaust manifold in the Cad flathead w/ a blower would be a tricky one!
It isn't clear to me what defines the
Vintage body class. Seems like "Vintage" is anything in section 5.B, page 72 in the 2020 rules. 5.B would include the roadsters, modified roadsters, RMR, vintage coupes, etc. The no turbo rule is on page 72, and it says "No turbos with vintage bodies + vintage motors". It would seem that you cannot run a turbo with an XF, XO, XXF, XXO, V4, V4F essentially. In a RMR w/ an XO motor, only a blower would be allowed, but in a lakester you would technically be allowed to run an XO with a turbo. Am I interpreting this correctly?
Turbos are allowed, or at least were, in non vintage bodies in XO/Blown. Buick eight and Hudson six cylinder engines have run well in class. But the GMC is most often seen.
Thank you for the pointers, I think I'm understanding this more now. I need to look into the Hudson motors, haven't researched these ones yet!