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ADVANCE CURVE KIT, GM HEI

Q: Is it possible to increase or decrease total mechanical adcance with this?

No. It will only modify when the advance comes in. Softer spring brings it in at lower rpm. Stiff spring; higher rpm. Total timing is unchanged.

Q: Will this fit a OMC 2.5l?

This will fit and large cap gm style hei distributor.

Q: Will this work an a profrom Hei 66941 distributor

I would say yes,, I usually run 2 med springs in my set ups Once installed check for smooth operation, set timing at 10 with heavy springs at idle then switch to the 2 lightest rev it up and see what is available from the new setup of course subtract your initial 10 degrees.. probably you’ll get about 18-22 available I run 14 initial 20 additional from my distributor all in by 2850 rpm and 10 vac advance 400 Pontiac

Q: What are the 4 white parts for and what r they for?

The white bushings are installed onto the pin that the weight is installed on. Early models did not have them and some late models did. There may be different sizes in the kit of which I am not sure of but sometimes the pins will get worn and the bushings come in handy to keep the weights from moving around and affecting the timing curve. Some people do not use them but I will if there is too much play in the hole on the weight. Hope that helps. Also remember that you need to know how much total advance your distributor will have at full advance. Lets says it is 20 degrees and you want a total of 34 at 3000 then you would set your base timing at 14 degrees to get your total. Good Luck !

4.6/5

Product ID: 262534335

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⚡Full spark advance

🔧Adjustable spring rates

🛠️Precision stamped weights

Frequently Bought Together

Moroso 72300 Advance Curve Kit, Fits GM HEI Distributors

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Description

⚙️ Ignite Your Ride with Precision!

STAY SECURE - Built-in stop prevents the adjustment screw from loosening, ensuring consistent performance.
SMOOTH OPERATION - Precision-stamped weights and centerplates eliminate erratic timing for a smoother ride.
EASY INSTALLATION - Comes with complete installation instructions, making setup a breeze.
TAILOR YOUR TIMING - Three sets of advance springs let you customize the rate of spark advance to suit your needs.
OPTIMIZE YOUR PERFORMANCE - Recurve your distributor for maximum spark efficiency at the ideal RPM.

The ADVANCE CURVE KIT by Moroso is designed to enhance your GM HEI distributor's performance by allowing for full spark advance at optimal RPMs. With adjustable spring rates, precision-stamped components, and secure installation features, this kit ensures reliable and efficient engine performance.

Specifications

Manufacturer	Moroso
Brand	Moroso
Model	ADVANCE CURVE KIT, GM HEI
Item model number	72300
Exterior	Plated
Manufacturer part number	72300
OEM Part Number	72300
Item Weight	50 g

Have a Question? See What Others Asked

Is it possible to increase or decrease total mechanical adcance with this?

Will this fit a OMC 2.5l?

Will this work an a profrom Hei 66941 distributor

What are the 4 white parts for and what r they for?

Common Questions

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Great experience from order to delivery. Highly recommended!

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Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

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TrustScore 4.5 | 7,300+ reviews

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Best international shipping I've ever tried. Worth every penny!

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