Modifying and custom curving a GM HEI distributor for street performance

Orig 70 Pontiac RAIII distributor; why it runs like a dog and why electronic conversion doesn’t help

Part 2 The Ultimate Vacuum Advance Tuning Guide

Episode 4 - GM HEI Recurve

MSD Distributor Advance Curve Kit Explained

How to lockout and phase an HEI distributor

Ignition timing tech you probably did not know!

HEI Distributor Mechanical Advance weight kit

How to wire up HEI modules All five explained with diagrams GM distributor 3 4 5 7 pin Ignition coil

The Ultimate Vacuum Advance Video Part 1

A simple shocking speed secret, recurving a distributor for performance and gas mileage

THE TRUTH About Vacuum Advance- What is it and WHY do you need it?? Ignition Timing 101

How to lock out timing in a HEI distributor. For racing use only.

How to lockout and phase your HEI - Part 2 - Questions answered

Distributor re-curve. The art of springs.

Rarely discussed power producing Ignition tech.

How To Choose Between Timed or Manifold Vacuum

GM H.E.I. Distributor: Pros, Cons & Special Features! 🚗💥

Ignition Timing or Fuel Tuning First? You are doing it wrong!

Is that CHEAP distributor any Good?? Let's find out!

Out of the box Accel 59130 Performance HEI distributor…How’s the factory curve???