a loos 35 thow or 0.9mm should have you runing prity good. your dwell or point gap is more important. try 14 thow loos with feeler gage.
18436572
The spark plug gap for a Chevrolet Tahoe 5.7 350 Vortec should be set at .060 inches. This spark plug will be purchased preset from any auto parts store.
35
.035
The 1986 Chevrolet 350 cubic inch engine spark plug gap is .027. Most spark plugs will be pre-gapped by the spark plug manufacturer.
.035
The 1991 350 cubic and Chevrolet engine spark plug gap is .027. Most spark plugs will come pre-gapped from the manufacturer.
The 1989 Chevrolet 350 cubic inch engine spark plug gap is dependent upon the engine application. The most common spark plug gap for the Chevy 350 engine is .027.
It would be best to discuss this with Pertronix.
need more information, what year and model of car
The spark plug gap for a 1991 Chevy Silverado 2500 V8-350 is .035, according to major spark plug manufacturers (i.e. Autolite, Bosch, Denso, NGK).
The spark plug gap for a 1995 Chevrolet Van 350 TBI is .035 inches. This is equal to between .8 and .9 mm.