The Stovebolt Site Forums The Shop Area Engine Shop Spark plugs for 1965 GMC V6 305?

Help is a click away!

VEHICLE
INFORMATION
KITS

at the

GM Heritage Center
All the details are here.

Searching the Site - a click away

New here ??? Where to start?

Click on image for the lowdown.

====

Who's Online Now

4 members (Bill Hanlon, Otto Skorzeny, RaNfLaS, klhansen), 351 guests, and 4 robots.

Key: Admin, Global Mod, Mod

Forum Statistics

Forums66

Topics128,162

Posts1,057,059

Members48,463

Most Online14,466
Apr 26th, 2026

Step-by-step instructions for pictures in the forums

Brad Allen's photos

AD Chevy Trucks

Pictures galore

Over 6,000 pictures

Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips.

Check them out!

Lots of work on Brad's part ... pure enjoyment (and references) for you!

Big Thanks!

THANKS!

For helping keep this great
old truck web site
on the Internet for

over 30 years!

and not clogged down
with Ads!

Again, thanks!

Print Thread

Re: Spark plugs for 1965 GMC V6 305? #10535 12/16/2006 3:51 AM
Joined: Dec 2004 Posts: 10 Minnesota B BobS New Guy
BobS New Guy B Joined: Dec 2004 Posts: 10 Minnesota	According to the 1965 GMC Maintenance Manual (X-6523), The 305E and 305C both use the AC C44NS plug with a 0.035" gap. The 351, 401 and 478 share the C42N plug with a 0.030" gap. Bob

Entire Thread
Subject	Posted By	Posted
Spark plugs for 1965 GMC V6 305?	Michael1964	12/10/2006 7:09 AM
Re: Spark plugs for 1965 GMC V6 305?	Hotrod Lincoln	12/10/2006 3:07 PM
Re: Spark plugs for 1965 GMC V6 305?	3B	12/10/2006 4:48 PM
Re: Spark plugs for 1965 GMC V6 305?	Fireballv8	12/11/2006 10:15 PM
Re: Spark plugs for 1965 GMC V6 305?	rfs56trk	12/11/2006 10:35 PM
Re: Spark plugs for 1965 GMC V6 305?	BobS	12/13/2006 4:39 PM
Re: Spark plugs for 1965 GMC V6 305?	BobS	12/16/2006 3:51 AM

Moderated by Phak1, Woogeroo

Hop To

Link Copied to Clipboard