Gramma's Car: the new project!

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VintageMusclecar · #1 02-21-2016, 09:26 PM

UR55 is the next coldest and the only one available with the wide gap. If you're willing to run an .035" gap plug you can go to a UR6.

**njsteve** · #2 02-21-2016, 10:45 PM

Since the car runs an HEI it probably needs the wide gap for the plugs.