[ho428]

Originally Posted by slowbird

What fuel? You compression limited?

Given I run 30 minute and hour long races and go through 30-40 gallons a race weekend, I'd like to run pump gas, which is what I built my newest 433 using KRE's. But I seriously doubt I could get the HP I need using Iron heads and pump gas. New sanction doesn't care what compression I run or fuel.
I figured with IV heads and my current flat tops I'd end up around 11.5:1 or so, price I'd have to pay to play.

For the tracks I want to run in Vintage racing over the next few years I'll have to switch sanctions to run those. Basically, bucket list racing.
Vintage sanctions can be hard to jump one to the other unless your car is built to a nationally recognized class. An iron headed dual plane gets me within their rules.