View single post by Distributorguy
 Posted: 03-10-2021 07:55 pm
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Distributorguy

 

Joined: 03-10-2021
Location: Shakopee, Minnesota USA
Posts: 5
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 The 11* cam doesn't really give 11 degrees unless you install the shorter style advance weights. None of them are very precise as built.
As for the "stock" advance curves, they were +/- 10% at best, and they were designed around running a lower base timing setting with more mechanical advance to help overcome the timing retard which causes the exhaust gasses to heat up. I'd also argue that there's power to be gained if you draw the all-in timing to come in at a higher rpm. I've built a few thousand of these distributors at WAY different specs than factory, with exceptional dyno results. 32 degrees total is very safe in most cases, unless your cylinder pressures are extremely high (think compression test values over 200 psi) and an aftermarket cam setup. Any advance that takes place over 4000 rpm is a waste and potentially dangerous. Completely unnecessary. No engine running DCOEs or similar should have vacuum advance.