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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | It is an easy, rewarding swap. The 75-77 had a separate coil. The 78 up is the best selection. Be sure it has mechanical & vacuum advance. Somewhere in the mid 80's they went to electronic advance mech. The unit is self contained so it's just a matter of replaceing your dist with it. Run a 12 gauge wire from the ign. term on the back of the switch. It's usually a pink wire. I scrape off some insulation & solder the wire to it. That way you dont disterb any thing else hooked to it. Plug the wire into the bat. term on the HEI. Regap the spark plugs to .045. Set the timing & you are ready for spark like a bolt of lightning. If you have a A/C comp. on that side you may have clearance problems.
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | |
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