| |
Click on image for the lowdown. 
====
| | | Forums66 Topics128,010 Posts1,055,308 Members48,419 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  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!
| | 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!
| | | | Joined: Nov 2010 Posts: 339 Shop Shark | | Shop Shark Joined: Nov 2010 Posts: 339 | I just installed pertronix on my 53,if I read the search right, the plugs should be gaped 40 to 60, which is the best. Also it said to retime the dist. So how far in advance should I go? All I have on the fly wheel is a dot, I have heard, I should go about 1/2 inch before TCD any input will help. 53 3100 235 root | | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | I retimed using vacuum gauge timing technique (maximum vacuum at idle).
From Pertronix:
What should I gap the spark plugs to?
The Ignitor has no set specification in which the spark plugs should be gapped at. Every engine responds differently to spark plug setting. In most cases increasing the factory recommended gap by .005 improves the engine performance.
.033-.038 (0.035) was original 1953 235 gap-spec (AC 44-5 Commercial plug) | | | | | Joined: May 2001 Posts: 7,438 Extreme Gabster | | Extreme Gabster Joined: May 2001 Posts: 7,438 | I gap the plugs on my 248 with Pertronix at .045. I also use the vacuum timing technique. It sets it at about 10° btdc. | | | | | Joined: Nov 2010 Posts: 339 Shop Shark | | Shop Shark Joined: Nov 2010 Posts: 339 | Thanks for the input, now I have a place to start. root | | |
|
|
| |
