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S
1980. Straight pipes to Magnaflow mufflers at rear. Sounds great, but the stink is intolerable. Backing it into the garage is 24 hours of exhaust stink. I drove the car for an hour with the t-tops off and I had to stop. The fumes are not coming into the cabin through the floor (no holes) but just out the pipes. What do I need to add to the system? Cats?
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I would pull a spark plug out first and see if it has a lot of carbon or soot on it. Your carb might be running rich. If it's a nice light tan color then I would say the carb is fine and put a couple free flow cats on it.
My '81 has side pipes on it and I put a cat inline on each side because I couldn't stand the smell of the exhaust.
GEN III 5.7L "LS6" Engine swap
TKO500 5 spd.
3.54 Dana 44
'69 "N11" Sidepipes
Borgeson Steering Box
Born 8/1981
Sequence #3975
Click here to see more pics of my Vette on CarDomain.
Lifetime Member #26
Borgeson Steering Box
Born 8/1981
Sequence #3975
Click here to see more pics of my Vette on CarDomain.
Lifetime Member #26
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in Forum: C3 HVAC, Fuel, Emissions, and Exhaust
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