General Category > Quadrajet Carb Talk and Tips
I need the stock specs for a 17050213.
Cadman-iac:
--- Quote from: 77cruiser on December 11, 2025, 02:07:30 PM ---At 4600 ft. wonder if that's why it was so rich when you put that carb on.
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That could be the case, the specs that Kenth or anyone else offers, I'm guessing, are always for sea level, and you adjust accordingly.
But does anyone know what ithe formula is for figuring out how to adjust for a given altitude?
I think you're right about why this one was so rich. Now I need to take another look at the 3 previous carbs to figure out why they were running lean. That's gonna be a job for another day though, I'm tired of pulling the carb off and on. I am pretty quick at it now, I can do it blindfolded now, lol.
Thank you for all your help, I definitely couldn't have done this without the support of you guys on here. I'd be lost for sure.
novadude:
--- Quote from: Cadman-iac on December 11, 2025, 01:00:57 PM --- That's good to know. Another thing is the altitude. Im at 4600 here, but Tucson is another 1400 feet lower. What elevation are you at?
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I am at ~700 ft
77cruiser:
Around 92 a Uncle of mine passed away in ND, we went out to get a 84 Chevy truck 305 it was high altitude per the emission sticker. It's only about a 1000 ft. lower here, but truck didn't run very well, went up one jet size & it made all the difference.
Cadman-iac:
--- Quote from: novadude on December 12, 2025, 05:28:13 AM ---I am at ~700 ft
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Wow, that's a big difference, I wonder how mine would run at that altitude.
Cadman-iac:
--- Quote from: 77cruiser on December 12, 2025, 06:10:39 AM ---Around 92 a Uncle of mine passed away in ND, we went out to get a 84 Chevy truck 305 it was high altitude per the emission sticker. It's only about a 1000 ft. lower here, but truck didn't run very well, went up one jet size & it made all the difference.
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Yeah, i was thinking that I should try one more combination to get the cruise and WOT areas and little smaller for that perfect AFR, ( a 69/40 I think was the next combo that gave me a slightly leaner area), but now I'm wondering if I should just leave it alone for now until I have another chance to run to Tucson and see how it'll run at that altitude.
I may have it set up so it'll work well for both but not perfect for either, if you know what I mean.
Is there a specific range of altitude that any given jet/rod combination is perfect for? By this I mean, is a jet/rod combo good for a range of 500ft, or 1000ft, then you would have to go to the next size up or down depending on which direction you're going?
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