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06-03-2022, 07:49 AM | #11 |
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Re: Tuning for altitude
One thing I found out a week or so ago is be prepared to turn your fuel pressure down. I ran at Boise with both cars, same fuel and ignition systems and the Stocker Ran good the Superstock was 3 tenths slow. I chased my tail changing everything I could and a good friend I texted said lower the fuel pressure. I did and my 60 foot went from 1.35 to 1.26. Both cars run the same carbs, same fuel pressure but obviously the Superstocker is more sensitive due to the power level. I have passed this along to as many as I can.
6254 A/SA SS/EA Darcy Clarke |
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06-03-2022, 08:04 AM | #12 |
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Re: Tuning for altitude
Do both have carb’s?
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06-03-2022, 11:05 AM | #13 | |
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Re: Tuning for altitude
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06-03-2022, 11:07 AM | #14 | |
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Re: Tuning for altitude
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06-04-2022, 05:18 PM | #15 |
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Re: Tuning for altitude
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06-06-2022, 08:08 AM | #16 |
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Re: Tuning for altitude
When I was working at the Ford Text track in Dearborn we would go on test trips to Denver where Ford had a small facility at Colorado Springs th do high altitude testing on fuel systems and brakes. At that time Ford had High Altitude kits for carb usage over 5000 ft sign included inmost jets,power valves and dist springs. They were in the parts catalog at Ford dealers.
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06-06-2022, 09:59 PM | #17 |
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Re: Tuning for altitude
I think Daves car is a 66 Chevelle 283/220 stocker. The carb on this combo is 485 cfm 4gc maybe with a cast iron 459 intake? Not alot of air flow. Back in the day my SS 283 with the same carb responded to leaning it out with jetting. The 2 plane intake with small lift cam will not have as good as fuel signal in the boosters as my SS motor. Also if he is running a glide with the one gear change, it may respond to higher rpm on the shift. But it is what it is. Good luck. Tom
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Tom Meyer 5240 SS Stock ??? |
06-07-2022, 08:37 PM | #18 |
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Re: Tuning for altitude
Leave the timing alone, jet up 3 or 4 steps.
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Lane Weber It`s Not What You Drive That Wins....It`s How You Drive It Last edited by The Hawk; 06-07-2022 at 10:00 PM. |
06-08-2022, 12:08 AM | #19 | |
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Re: Tuning for altitude
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