Jet for best MPH then start adding 1* see how it responds.

Don't get hung up on a number as that's all it is.

My deal was way rich for engine masters that's just how you have to run that deal.

But still it still wanted 38-40* on pump gas in a car and this was 10.75to1 flat top.

Guy on moparts has the engine in a D-50 truck and it runs well.