Re: What is this distributor?
After a MSD electronic distributor module failure while in storage for a few months, I went back to traditional points in my 1972 402 Cheyenne, and retained them in my 1970 Blazer. Key is to only use NOS USA made Delco points with the separate condenser unit, points gap to .019", dwell at 30 degrees(recommended range is 28-32), and to ensure the distributor points cam is lubed with the correct lubricant. I also use NOS green stripe AC spark plugs in all of my vintage GM vehicles. Both the truck and Blazer start instantly in any weather, and run excellent and consistently. These will last several years with my below 1000 mile a year usage of either vehicle.
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1970 K/5 Blazer CST 4WD, TOTM winner December 2024! Medium Bronze poly, 93k ACT. miles, 350, 4 speed, rear positraction, 16.5" x 8.25" HD Kelsey Hayes wheel option, tilt, tach, vacuum, AM/FM, manual throttle...Dad ordered and purchased new 4/70. Currently frame off restoration finally getting close to completion.. 
1970 K20, To be a clone of my Grandfather's K20, Dark Blue poly, 350, 4 speed, 16.5" X 8.25" Kelsey Hayes wheel option, tilt, tach, vacuum, AM radio. Latest project truck
1972 Cheyenne Super 20 2WD, Dark Blue/White, 90K ACT. miles, 402, TH400, 4.10 open, tilt, tach, vacuum, A/C, AM/FM, manual throttle.. A mostly original paint never rusted Texas survivor... 
2017 Sierra 1500 SLT 4WD, Black, 46k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2...
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