I just got a TSP JM7724R HEI Distributor for my Skylark Custom 350-4. I was wondering if anyone else has this same distributor and can tell me what advance setup they found worked the best?
"Top Street Performance" Sold at Walmart. I would start out with the factory recommended initial advance if the engine is stock? Then I would follow Larry's excellent power timing thread. Their instructions: https://www.topstreetperformance.com/media/pdf/Pro_Series_Ready_to_Run_Instructions.pdf
And that's what I get for assuming I googled his part number and came up with the instructions, https://www.topstreetperformance.com/media/pdf/Pro_Series_Ready_to_Run_Instructions.pdf It's a Ready to Run MSD clone distributor with adjustable mechanical advance. Here is a clip out of the instructions, With a stock engine, I would run 32* total timing (initial + mechanical) not including vacuum advance. From the diagrams above, if you don't run any advance stop bushing, you'll have about 18* of mechanical advance. If you run 14* initial, you'll have 14 + 18 = 32*. I would install the 2 heavy (black) springs, and with the engine idling as low as possible, set the initial timing to 14*. You can then install the lightest (Gold) springs and check the total advance. Should be 32*. For the street, I would run the Medium (silver) springs, or gold and silver springs to get all the advance in at around 3000 RPM. That should work great in a stock engine. Then hook your vacuum advance up.
