Ignition Question(s) - The 1947 - Present Chevrolet & GMC Truck Message Board Network

JAB'70 · 08-02-2010, 03:08 PM

I did a little upgrade over the weekend to my pick'm up ('70 c10, 350, 5.7L 4BBL Eldebrock 1406 carb). I replace the HEI with a complete ignition setup - MDS AL6 ignition box, MSD Blaster 2 coil, MSD Pro Billet Distributor, New spark plug wires, new spark plugs (AC Delco R43T).

I set my plugs gapl is set at .45, started it up and it's a rough idle (I have not set the timing yet).

The question is did I set the plug gap to large?

A friend of mind said I quote " they should be set between .35 to .40 you need some really good fire if the gap is set at .45."

I said, I thought the new setup gave really good fire...am I in left field???

08-02-2010, 03:08 PM	#1
JAB'70 Registered User Join Date: May 2007 Location: South Carolina Posts: 54	Ignition Question(s) I did a little upgrade over the weekend to my pick'm up ('70 c10, 350, 5.7L 4BBL Eldebrock 1406 carb). I replace the HEI with a complete ignition setup - MDS AL6 ignition box, MSD Blaster 2 coil, MSD Pro Billet Distributor, New spark plug wires, new spark plugs (AC Delco R43T). I set my plugs gapl is set at .45, started it up and it's a rough idle (I have not set the timing yet). The question is did I set the plug gap to large? A friend of mind said I quote " they should be set between .35 to .40 you need some really good fire if the gap is set at .45." I said, I thought the new setup gave really good fire...am I in left field??? __________________ CWO3, USN, RET When a man's ways please the Lord, He makes even his enemies to be at peace with him.; A man's heart plans his way, But the Lord direct his steps." (Prov 16:7, 9 NKJV) Never look down on anyone unless you are helping them up. SMS.



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