The Stovebolt.com Forums

Home | Tech Tips | Gallery | FAQ | Events | Features | Search

Register Log In

The Stovebolt Site Forums The Shop Area Engine Shop which spark plug do I need for my 261/235 engine?

Help is a click away!

VEHICLE
INFORMATION
KITS

at the

GM Heritage Center
All the details are here.

Searching the Site - a click away

click here to search

New here ??? Where to start?

Click on image for the lowdown.

Where do I go around here?

====

Who's Online Now

7 members (Shade Baby, GDW, Shaffer's1950, 3B, Cletus1950, 2 invisible), 138 guests, and 3 robots.

Key: Admin, Global Mod, Mod

Forum Statistics

Forums66

Topics128,139

Posts1,056,459

Members48,441

Most Online14,466
Apr 26th, 2026

Step-by-step instructions for pictures in the forums

Brad Allen's photos

AD Chevy Trucks

Pictures galore

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!

Print Thread

which spark plug do I need for my 261/235 engine? #1032779 06/02/2014 12:46 AM
Joined: Dec 2012 Posts: 5 Ohio P pistachiofarmer New Guy
pistachiofarmer New Guy P Joined: Dec 2012 Posts: 5 Ohio	In my '46 pickup I have a 261 block with a 235 head. I looked at Old Online Chevy Manuals for a 1956 truck and it says I need an AC 44-5 com plug for the 235 engine AC 43-5 com plug for the 261 engine I don't know what "com" stands for. The plug in the engine now is an AC 43S. What is the difference between the 43, 44 and the 45?

Entire Thread
Subject	Posted By	Posted
which spark plug do I need for my 261/235 engine?	pistachiofarmer	06/02/2014 12:46 AM
Re: which spark plug do I need for my 261/235 engine?	Harold46	06/02/2014 4:34 AM
Re: which spark plug do I need for my 261/235 engine?	pistachiofarmer	06/02/2014 7:39 PM
Re: which spark plug do I need for my 261/235 engine?	tclederman	06/02/2014 9:52 PM
Re: which spark plug do I need for my 261/235 engine?	Harold46	06/03/2014 5:22 AM
Re: which spark plug do I need for my 261/235 engine?	pistachiofarmer	06/07/2014 6:46 PM

Moderated by Phak1, Woogeroo

Hop To

Link Copied to Clipboard

Home | FAQ | Gallery | Tech Tips | Events | Features | Search | Hoo-Ya Shop

Powered by UBB.threads™ PHP Forum Software 8.0.0