0.70mm +/- 0.10mm or .028 in +/- .004 in Check the Emission Control Information label under the hood for your specific model. No sticker? Well, .028 - .036 will get you in the ballpark. If you buy Bosch W7DC or W7DTC spark plugs (the preferred brand), they are pre-gapped.
The Spark Plug Gap.060 (In thousandths of an inch)
The 1986 Chevrolet 350 cubic inch engine spark plug gap is .027. Most spark plugs will be pre-gapped by the spark plug manufacturer.
Most of these were .045 but you should check with a AC spark plug application book.
.030
.045 plug gap.
To send a spark the the proper spark plug at the proper time.
1,3,4,2
.035
Whats the model number??
.043
.32 to .35
.035