Do you know what a stock 302 curve looks like?
I would start with that.
More compression means you will have faster combustion.
Bigger valves and carbs means you will have better Volumetric Efficiency and thus more charge filling in the cylinder which also means faster combustion.
A bigger cam will give you a better VE at higher RPMs givin you - yup, you guessed it, faster combustion.
You will need to REDUCE the total spark advance schedule from the stock. This assumes the stock spark schedule is not knock limited due to octane constraints.
Bottom line: faster burn rate means less spark advance is needed unless the original engine was borderline knock limited in its timing. If you plan to use a higher octane fuel you can get by with more timing, but that doesn't necessarily mean more timing over the stock specs will help, especially at part throttle.
Last edited by THE FRENCHTOWN FLYER; 09/28/21 01:45 PM.
