Distributor Question for Lars, et al....
Thread Starter
Team Owner
Joined: Jan 2006
Posts: 37,637
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From: Crossville TN
Distributor Question for Lars, et al....
OK, so I followed the plan for set-up of my '71 SB distributor... One spring was removed and it appears to max out at 36 deg. When I run it through the RPM range, advance is all in by 2800. With a road test, it runs well with no pre-ignition ping. So.... with it running so well, do I really need to replace the spring set? Or can I leave it with just the one original spring?
Tech Contributor
Joined: Aug 1999
Posts: 14,377
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From: At my Bar drinking and wrenching in Lafayette Colorado
Actually, you can run it with one spring. The spring force of the two springs is additive. It looks a little funny with only one spring, but if your full advance comes in at 2800 in that configuration, there's actually nothing wrong with that. It was a real common "racing trick" back in the 60s and 70s to simply pop a spring off the distributor when you got to the track in order to get a very quick curve during racing, and then pop the spring back on for the drive home.
You can pick up Mr. Gasket part number 928G and use various combinations of springs from that kit to get your 2500-2800 rpm peg-out point using 2 springs. Depending on the distributor, I usually end up using one black spring and one silver spring from that kit, but some distributors will take the two gold springs.
You can pick up Mr. Gasket part number 928G and use various combinations of springs from that kit to get your 2500-2800 rpm peg-out point using 2 springs. Depending on the distributor, I usually end up using one black spring and one silver spring from that kit, but some distributors will take the two gold springs.
