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73-87 Chevy _ GMC Trucks => Performance => Topic started by: 79 sierra hombre on March 30, 2008, 12:28:51 PM
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i to want to replace card on my 1979 v8 350 sierra grande , but dont know what do to, i dont want 4 barrel card, do to gas, what do the great minds here sugest?
exhaust smells a lil rich, like gas, what should i do?
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What's card? Do you mean carburetor? What do you have on it now? What you should do is tune it up, set the timing and adjust the carburetor and go from there.
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I think he means carB. If it has a 4bl on it now, I'd keep it rather than replacing the intak manifold from a 4 bl to a 2 bl intake. I 4bl carb can get quite good mileage if you don't open up the 4 barrels, and just drive it with the two barrel, in other words, don't stomp the gas.
As vile said, adjust the carb if it is a little rich. Adjust the timing as well.
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rebuild the 4 barrel, tune-up but no 2 barrel. I have switched to a 2 barrel many years ago thinking it would help gas mileage, and made it worse. Gas mileage is controlled by your foot on the little skinny pedal.
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rebuild the 4 barrel, tune-up but no 2 barrel. I have switched to a 2 barrel many years ago thinking it would help gas mileage, and made it worse. Gas mileage is controlled by your foot on the little skinny pedal.
I had done the same thing about 25 years ago on a 72 C-10 I had. I actually played with the jets and got better. The exhaust pipes burned clean with a light grey color and it passed emissions standards for the day. Just a Rochester 2 bbl