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07-11-2011, 07:39 PM
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Registered User
Join Date: Mar 2010
Location: gainesville florida
Posts: 18
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spark plugs question. confused
I have a 82 silverado with a 350. Has 492 heads and 9.5-1 compression. I swapped plugs. Went from r45ts to r43ts because of advice from a mechanic. Problem is now my idle rpms are lower and there is power loss. Do you have to advance timing with a cooler plug? Should I switch back to the hotter plug? Thanks in advance.
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