I learned a lot pump gas tuning on my Duster, once I installed the Mr. Gasket 925B advance springs and shorten up the mechanical advance could make it idle at 850 in gear, 1000 RPM in neutral up I think those spring let all the advance come in by 1200 RPM, maybe a little slower or faster shruggy
I was running a Comp Cams custom ground solid roller cam in that motor that was 260@.050 on the intake lobes and 266@.050 on the exhaust lobes ground on a 108 LSA installed with 2 degrees advance on the intake lobes, 106-107 intake lobe center.
My message is you can get the performance you want but you will have to try, test, different combinations until to find the one combination you like wrench up

Last edited by Cab_Burge; 02/14/20 03:35 PM.

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)