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Moroso 72300 Advance Curve Kit GM Hei
Heintz Sales/Heintz Brothers Auto (50507)
99.4% positive feedback
Price:
$21.99
Free shipping
Returns:
30 days returns. Seller pays for return shipping.
Condition:
Part#72300. H.E.I. Advance Curve Kit, all GM H.E.I. distributors. Special design centerplate eliminates over-centering of the centrifugal weights. Designed by Nelson Crozier. Three sets of advance springs allow you to adjust the rate of spark advance from quick, to super-quick, to ultra-quick.
- Buy It NowMOROSO 72300 HEI Distributor Mechanical Advance Re-curve Spring Kit for Chevy/GM
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About this product
Product Identifiers
BrandMoroso
Manufacturer Part Number72300
GTIN0084663723001
UPC0084663723001
eBay Product ID (ePID)27017006620
Product Key Features
ColorBlack
Vintage PartYes
TypeDistributor
Country of OriginChina
Dimensions
Item Diameter10in
Item Weight1.76 Ounces
All listings for this product
Ratings and Reviews
Most relevant reviews
- Dec 15, 2016Top favorable review
Just the kit for your GM distributor!
In short, I needed a new ignition for my 30 year old Ford F-150 (broken tabs and no more computer to control the advance). I found the answer ... someone had adapted a GM coil-in-the-cap distributor to a Ford 300 six ... awesome! One wire, vacuum and mechanical advance all for $90. Problem, the distributor needed to be set up for an old straight six engine. This kit did the trick. I actually was trying to take out some of the advance and get it more to where a stock engine would be. There are three sets of springs and a set of weights. With this kit, I think most people can set up their distributor to get the maximum advance without hitting the point where the engine "pings". I have seem a couple of kits ... this one seems to be one of the better ones ... quality of the items is great.Verified purchase: YesCondition: New
- Jun 14, 2018Top critical review
It is a good kit just needs a little work to make it fit the pins on the distributer
After finding the bushing it needed I pressed it in to place in the arm and when I tried to put it back on the pin it would no longer fit. Was not a hard fix but you would think they would take in to consideration by pressing the bushing in the arm would shrink the hole thus making it not fit on the pin. Anyway I took a very small piece of sand paper and rolled it and sanded the hole back out.Verified purchase: YesCondition: New
- Sep 10, 2019
Best curve kit for hei
If you have an old GM hei or even a Chinese knock off hei. A Moroso hei curve kit is a must.I usually use the middle springs.All out race cars will take the light weight ones.While rv's and how rigs may like the heavy springs.Also these bushings are hard to find alone.The only negative is no picture of correct weight and center orientation.Get out your cell phone and take a pic of the old wieghts and center first.It will save ya.Google it and you will see some on backwards ....Verified purchase: YesCondition: New
- Aug 07, 2018
An okay product.
This product is a good product, but not for my application; it worked however in the Chrysler marine distributor; I only used the springs. I can't say more than that because I didn't use them for what they were intendedVerified purchase: YesCondition: New
- Mar 08, 2022
Good quality at a good price.
With multiple sets of springs you can choose the one that’s correct for your application.Verified purchase: YesCondition: New
- Sep 19, 2017
Pretty good Kit
Kit comes with everything you need to recurve your mechanical advance. It also comes with an easy-to-read chart to help you recurve your distributor mechanical advanceVerified purchase: YesCondition: New
- Apr 04, 2017
Does exactly what it says it does
The calibration info on the back is accurate. With the lightest springs, the weights give about 23 degrees of advance all in at around 3000RPM. That is the curve that I wanted so well done Moroso!Verified purchase: YesCondition: New
- Feb 23, 2021
Waste of time and money
This is a very misleading product. There are no instructions. Controlling your mechanical Advance requires different Center cams and weights this kit does not include them, nor does it explain their importance in timing. It also did not fit the GM HEI distributor without extensive modificationsVerified purchase: YesCondition: New
- Sep 11, 2025
Great product. Fit perfectly not a slopp...
Great product. Fit perfectly not a sloppy fit. Well pleasedVerified purchase: YesCondition: New
- Mar 19, 2025
I installed it and it went on very well....
I installed it and it went on very well. I haven't started the engine but i feel confident that it will work as designed.Verified purchase: YesCondition: New
