i want to retard my timing how much is okay

[pawngod]

could not get the audible k.r. stopped w/logging....so i changed spark to retard 1 degree...no more knock..(i was wondering if i should have gone w/ 1/2 a degree)...so i guess i am happy...i just upgraded my u1794 to the latest revision. ..i really feel a smoother excelleration and doesnt seem to run as rich as before. ps. i am on the 87 tune w/ 91 octane fuel
man these trucks are fast!!

[SandMan817]

you cannot go with half of a degree. It goes by 1 degree adjustments.