04-15-2026, 07:35 PM

OCMDGTO

Ultimate Warrior

Join Date: Sep 2014

Location: Ocean City Md

Posts: 1,348

Progression Ignition with stock tach

69 GTO with stock tach and their HEI dist. My tach is way off intermittently reading normal or way high. Anybody else having this problem and how did you fix it? Tach adapter?

__________________
Chris D
69 GTO Liberty Blue/dark blue
T400, 9" w 3.50s, 3905lbs

461, 850 Holley, T2, KRE 310s, Comp HR 236/242D .572/.594L, RA manifolds, 11.53@114, 1.55/60

The spare: 467, 850 Holley, T2, Edelbrock Dport 310cfm w RA manifolds, Howard HFT 245/251D .561/.594L, 11.59@ 114, 1.57/ 60'

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