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chevyforever · 03-10-2004, 01:08 AM

i have a question to ask because i have been rattlin this around in my head for a while now
what i am wondering is if elevation changes affects ignition timing. i know that if i tune my carburetor for home(5400 ft elevation) and go to sea level that it will set way too lean because of the more dense air and vice versa, but what if i changed jets to compensate for the elevation change, would i have to adjust my timing also or just leave it alone.

maybe i shouldnt think so much

chevyforever

03-10-2004, 01:08 AM	#1
chevyforever Some like em' long! Join Date: Nov 2002 Location: Grace, Idaho Posts: 69	elevation vs. timing i have a question to ask because i have been rattlin this around in my head for a while now what i am wondering is if elevation changes affects ignition timing. i know that if i tune my carburetor for home(5400 ft elevation) and go to sea level that it will set way too lean because of the more dense air and vice versa, but what if i changed jets to compensate for the elevation change, would i have to adjust my timing also or just leave it alone. maybe i shouldnt think so much chevyforever __________________ 1971 chevy c10 lwb- 300 hp 350 crate motor, soon to be more with ported and polished 62cc chamber 461 double humps, TH400, 3.73 posi, used to be my uncle's truck 1972 chevy k10 lwb- 350,4 spd, old and tired, dad bought brand new and is now mine 1968 chevy c20 lwb- 327, 4 spd, was originally a 50th anniversary truck 1990 GMC K1500-just my runaround truck 1982 Chevy K10 shortbed, new motor and new paint, another project in the mix of the others. IMPORTS SUCK!