what is the correct ac delco plug in a 350 1978 k5 blazer with non-cali emissions?
R45TS or r44t
what plugs do you run? Why run on or the other?
R45TS or r44t
what plugs do you run? Why run on or the other?
CK5
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correct ac delco spark plug
- Thread starter wazzabie
- Start date
I think the recommendation I got on here was for the R45T and they seem to work great.
Why use the s tips?
my plugs have an oily carbon... so are they running hot, or is it carb issues?
old school i run r45ts .
Update: According to the GM service manual R44T is the correct plug for a heavy duty non cali emissions (ZB emissions sticker) 78 K5. I'm currently running R44TS. I'm thinking about switching out to the R44T plug.
Engine is perhaps burning some oil or coolant. I'm trying to figure out exactly why is smokes so much. Maybe the extended tip will help.
Engine is perhaps burning some oil or coolant. I'm trying to figure out exactly why is smokes so much. Maybe the extended tip will help.
Correction: I'm currently running a R45TS plug.
When you pull the plugs, look for color. Drive it a week with the new plugs and check for color again. When the original heads on my 77 were cracked, I had a hint of green on clean porcelain. You may see bubbles in the radiator, but not always
