Go Back   CLASS RACER FORUM > Class Racer Forums > Stock and Super Stock Tech

Thread Tools Display Modes
Old 02-09-2018, 06:22 PM   #1
Junior Member
Join Date: Apr 2013
Location: Raised in PA, Live in San Angelo, TX
Posts: 45
Likes: 0
Liked 0 Times in 0 Posts
Default spark plug gap

Recommended plug gap for MSD 7-AL3 with Autolite racing plugs in 307 Olds stocker.
qflash is offline   Reply With Quote
Old 02-10-2018, 01:43 AM   #2
VIP Member
Join Date: Jun 2009
Location: Boulder City, Nevada 89005
Posts: 1,400
Likes: 84
Liked 35 Times in 15 Posts
Default Re: spark plug gap

We run .035. on AR plugs
More does not seen to help and just puts
more strain on the the rest of ignition system in
my opinion.
John Irving
741 Stock
741 Super Stock

Last edited by GTX JOHN; 02-10-2018 at 01:50 AM.
GTX JOHN is offline   Reply With Quote
Old 02-10-2018, 12:22 PM   #3
VIP Member
FireSale's Avatar
Join Date: Feb 2014
Location: Lakewood Washington
Posts: 1,078
Likes: 3
Liked 13 Times in 11 Posts
Default Re: spark plug gap

I have that box on a 302 Ford. At .050 it was hard to start. Improved a lot at .035. Autolite plugs, too.
Dale Shearon
68 Mustang 6394
FireSale is offline   Reply With Quote
Old 02-11-2018, 01:02 AM   #4
Dave Noll
Dave Noll's Avatar
Join Date: Nov 2007
Location: Div. 6, Central WA
Posts: 418
Likes: 37
Liked 1 Time in 1 Post
Default Re: spark plug gap

.015" difference in spark gap makes a negligible difference in spark output as observed on an Oscilloscope.
Dave Noll, N/SA 6526
Dave Noll is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT -5. The time now is 03:37 AM.

Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Copyright © Class Racer.com. All Rights Reserved. Designated trademarks and brands are the property of their respective owners.Ad Management plugin by RedTyger