The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post

AcampoDave · 10-31-2020, 01:42 AM

I don't have a dial back timing light, but i did get one of these https://www.summitracing.com/parts/s...BoChAAQAvD_BwE from my local parts store and used it with my regular timing light along with my tach to view when and how much initial, mechanical and vacum advance my distributor was putting out. It worked great and I picked up a few stray ponies by getting it all dialed in.

10-31-2020, 01:42 AM	#32
AcampoDave Registered User Join Date: Feb 2013 Location: central California Posts: 2,726	Re: Spark plug diagnosis I don't have a dial back timing light, but i did get one of these https://www.summitracing.com/parts/s...BoChAAQAvD_BwE from my local parts store and used it with my regular timing light along with my tach to view when and how much initial, mechanical and vacum advance my distributor was putting out. It worked great and I picked up a few stray ponies by getting it all dialed in. Last edited by AcampoDave; 10-31-2020 at 01:47 AM.