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Old 02-09-2005, 07:25 PM
Lthompson Lthompson is offline
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mechanical advance settings??

I just bought an MSD HEI distributor and it comes with several mechanical advance springs and bushings. I'm wondering which setting to use to get the best performance. I will be running an XE284 cam with 240 at .050 duration. 10.5. 1 compression and 93 octane gasoline with aluminum AFR heads. At what rpm should i have the timing fully advanced? its adjustable from about 2800 to 5500 rpm. Also, would i get better performance if i locked out the vacuum advance or should i leave it on? thanks for any suggestions
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