Here's your sign.....a 6.0, cam, Holley carb
They were on the engine when I bought itDo you have the right valve springs installed?
I'll check the plugs this afternoon and seeHere's your sign.....
What's the AFR look like?
You probably already know this but the valve springs should always be matched to the cam specs. If not you will get valve float and will not build power at higher RPMs. You need to figure out what cam you have and what springs are in itThey were on the engine when I bought it
Thanks. I don't have O2 bungs or gauge. Plugs look ok and gray colored. The plugs that I'm using are for a 1974 pickup which is what the guy I bought it from said the engine was originally built from.So, you have the O2 bungs plugged and no gauge. As bracketchev1221 points out, unless it's a typo, 111 mph is rolling, so you're not hooking or something. That should be solid low 12s- high 11s
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