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#1 |
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Registered User
Join Date: Sep 2019
Location: Dade City
Posts: 107
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spark plug for unilite distributor?
Installed a Unilte in my 350. Need a plug recommendation. Was going to use R44TS plugs then found this post on a Chevelle forum. (Spark plug gaps, .035 MAXIMUM, NO LARGER. preferably, .032. NO resistor spark plugs, and a good set of magnetic suppression, spiral core plug wires.) All the AC plugs I found start with the R designation. Supposedly means resistor plug?
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#2 | |
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Senior Member
![]() Join Date: Feb 2002
Location: Tucson, AZ USA
Posts: 8,118
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Re: spark plug for unilite distributor?
Quote:
If using Points, the common wisdom is to set the gap at .035. If you have an HEI distributor, or Pertronix, or other electronic device in your distributor, then the recommended gap is .045. Thanks for giving us the data that you have a 350. We might also want to know what year, drivetrain notes and other stuff. In my opinion, a Truck ain't a Chevelle. If you have a radio or some music -playing device, you probably want Resistance plugs.
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Every 25 years I like to rebuild that 292, whether it needs it or not. |
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#3 |
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All stock and staying that way
![]() ![]() Join Date: Jul 2003
Location: Elkland, PA
Posts: 2,501
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R45TS plugs work well in most truck applications with lower CR. If working it really hard for extended periods, OR you have a 9.5:1 CR or above, go to a R44TS or even a R43TS (lower the number, the colder the plug with AC).
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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. Frame off restored 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, 51k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2... 2019 Canyon SLT 4WD, White, 71k miles, 3.6, 8L45, 3.23 LS, 18" wheels |
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