looking for correct plug and gap
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Heel & Toe
Joined: Jul 2006
Posts: 21
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looking for correct plug and gap
If anyone can help me. I am trying to find the correct spark plug and gap. I have a 72 454 which I placed on a Torker 2 intake, a Holley 650 double pumper and a HeI system to upgrade from stock. I have been told to open up the gap from the standard .035 because of the increased spark and also to go to a cooler plug. I put in a set of Delco R44t as per book with .035 gap. It runs great for the first 50 or so miles then engine starts to run rough. Any help would be greatly appreciated.
Last edited by mark werner; Jun 12, 2007 at 11:51 AM.
Le Mans Master
Joined: Mar 2004
Posts: 7,493
Likes: 1,502
From: Little Rock AR
Pull the plugs and look at them. If they are fouled, you may need a hotter plug.
Keep the gap at .035". This is not going to make or break the plug selection. It is all about heat range and getting that right. Too cold and they will foul.
-Mark.
Keep the gap at .035". This is not going to make or break the plug selection. It is all about heat range and getting that right. Too cold and they will foul.
-Mark.
