HEI Advance Curve Kit
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Please NOTE the following about this product:
- This item is sold as a kit.
Q & A
What's in the Box
NOTE: Installation of this kit may alter emission levels.
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Adjust your GM HEI distributor for any driving condition. This kit allows you to change the amount of ignition vacuum advance for maximum part-throttle performance while preventing the harmful effects of spark knock (detonation). Dial in as much spark advance as conditions permit — add more advance under light load conditions to improve throttle response and fuel economy, or limit spark advance in high compression engines and high load conditions to eliminate knock.
- Built-in stop prevents the adjustment screw from "backing out" like other designs
- Easy to install
- Includes 3/32" Allen wrench and easy-to-follow instructions
287-99600 Instructions (PDF)
Fast and accurate method of adjusting ignition timing without use of a timing light. Change timing quickly between heats. Fits all Chevy V8 and 90° V6 distributors. May require minor modification to some manifolds.
545-26100 Instructions (PDF)
This little jewel replaces the vacuum advance on an HEI distributor. This allows you to change the timing without having to loosen the distributor - just turn the knob.
Fits V8 engine HEI distributor only.
"French" distributor clamps for Chevys provide superior clamping power and compensate for misalignment.