Hopping up the 500 Cadillac
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12. With aftermarket rocker arms you cannot use stock valve covers. You have to use tall ones for clearance. | 12. With aftermarket rocker arms you cannot use stock valve covers. You have to use tall ones for clearance. | ||
13. The factory HEI distributor works fine if it is modified slightly. The stock advance curve is about as screwed up as any I have ever seen | 13. The factory HEI distributor works fine if it is modified slightly. The stock advance curve is about as screwed up as any I have ever seen | ||
| − | For performance applications. The curve that seems to work well is 25 degrees mechanical advance at 3000 rpm for | + | For performance applications. The curve that seems to work well is 25 degrees mechanical advance at 3000 rpm for 19:1 HIGH COMPRESSION |
Motors with 8 degrees initial. For LOW COMPRESSION under 9.0 CR use 20-22 degrees mechanical advance all in at 2500 with 12-14 initial advance. | Motors with 8 degrees initial. For LOW COMPRESSION under 9.0 CR use 20-22 degrees mechanical advance all in at 2500 with 12-14 initial advance. | ||
This will give the motor low speed pep. Plug the vacuum advance. They Over-advance and cause pinging. This distributor tip works well | This will give the motor low speed pep. Plug the vacuum advance. They Over-advance and cause pinging. This distributor tip works well | ||
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