[427TJ]

Had a smart car buddy over all day today to help me get the tune-up figured out (he did all the brain work). It was doggy before so we took off the cap and saw that the advance springs (old MSD electronic dist) were actually the heavy "shipping" springs used by the manufacturer for shipping the new distributor and meant to be replaced with lighter springs during initial install and tune. No wonder the damn thing wasn't advancing properly. SO, over to the nearby speed shop for the correct lighter MSD springs. My buddy put in one silver and one blue spring and now it advances nicely and is all in by 2400 rpm with 38 degrees total. Tweaked the timing slightly also. Now it happily pulls past 5500 wihtout hesitation and no ping. It's like a whole new car. My buddy said it reminds him of his old '69 Z/28 the way it quickly and happily revs past five grand on banzai throttle bursts. Pow, pow, pow on the shifter and we're bombing down the street at 60 (in a 35) in seconds flat. Nice to have the tune-up figured out. Now I await a new/rebuilt 3310 Holley from Eric "vintagemusclecar" to replace the aging spread-bore unit.