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Your cart is empty. GM Chevy V8 HEI Distributor Mechanical Advance Re-Curve Spring Kit
This H.E.I. Advance Curve Kit is designed to fit all GM & Chevrolet H.E.I. distributors. This kit comes with 3 sets of advance springs to allow you to adjust the rate of spark advance from quick (Brown), to super-quick (Silver), to ultra-quick (copper).
Melinda
Reviewed in the United States on January 9, 2025
Don’t waste your time buying this if you’re looking to use the lightest spring set. As soon as I put them on, they broke.
jason wysong
Reviewed in the United States on September 5, 2024
I’ve got some garbage in the last few years from the big names in speed parts. There are still little companies making good parts. These are what they say. All the springs are high quality and the weights are correct. A simple part but has to be right or what’s the point
David Palmer
Reviewed in the United States on May 5, 2024
Real quick installation.Better acceleration
William M.
Reviewed in the United States on October 20, 2023
You get what you pay for all parts included seem to be of decent quality. The spring included on the other hand will not satisfy the needs of anyone looking for what's typical in most kits. The lightest spring was not oriented correctly and far to weak. The medium spring used mostly would guess the rate is somewhere near most stock springs removed.
Gary Justus
Reviewed in the United States on July 28, 2022
This went into a 350 Chevy motor 1983 and a boat. It would have been nice to have UC clips in the kit to hold everything down I had to use the old ones not comfortable with doing that.
Roger Dean
Reviewed in the United States on August 25, 2020
Had a little trouble with what springs to use on my 454, but decided on the gold ones . Car runs great.
D. Rivera
Reviewed in the United States on May 20, 2018
I got this set of HEI curve weights and springs for my new HEI distributor. I have my SBC 350 with 10 degrees initial advance and 25 degrees total at 2500 rpm so it seems to be a good kit. I'm using the dark brown springs and the SBC revs nicely.
Damon Sonnier
Reviewed in the United States on February 14, 2017
Installed these in my 1992 SBC 350 that's transplanted in a 1983 c10. The old weights were pretty corroded. Comes with 3 sets of springs. I used the medium ones and it seems to work better now.
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