1987 C10 Spark Plug Gap?

[TruckCo]

Used the search bar but trying to figure out what spark plug gap is right for my 1987 R10, 350, with edelbrock fuel injection?

 

[Ricko1966]

I use .035 your probably going to get answers of .045 do some research and see your pros and cons and pick your poison.

 

[SquareRoot]

I'm using Edelbrock Pro Flo 4. It requires a MSD Blaster coil or equivalent. I also run Vortec heads. Factory plugs for Vortec heads use a .060 gap. I use a .060 gap and it runs fine. Point is if you have a high output ignition go as big as you can. Gas quality, compression ratio and other factors can affect it. .045 is a good compromise.

 

[Ricko1966]

Reading material to help you understand some of the different reasoning for different gaps. There are actually more variables,but these are good enough for government work.

Gapping and Indexing - NGK Spark Plugs

What does gapping and indexing mean for you? Check out this article to learn more about spark plug gap tolerances and indexing for race applications.

ngksparkplugs.com

 

[mtbadbob]

Yep, .035-.045 is a good range with standard ignition.