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Old 05-13-2010, 08:39 PM
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High altitude carb size

385 sbc
11.5:1 forged flat tops, dart pro 1 200's 2.02/1.6
solid roller (lunati 50169) .606/.587 248/252 @ .050 110 lsa
vic jr single plane
1 3/4 primary 3 1/2 collector headers
currently 750 dp.

at stop when you try to floor it, it dies. ive tried larger shooters jetting up and down. no carb shops locally. circle track guy says im too rich, doesnt seem right either. 4500' in salt lake city ut.

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Old 05-14-2010, 04:30 AM
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A bit more info would help, type of car, weight, transmission, convertor stall, rear end ratio and tire size.
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Old 05-14-2010, 09:19 AM
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Gutted 1981 El Camino probably 3000 lbs.
3000 stall th-400
moser engineering 8.5 10 bolt full spool 3.42
25 inch tall tire
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Old 05-14-2010, 09:35 AM
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Actually, if your engine dies when you hit the gas then you need to richen up the carb and/or put in larger squirters. Might want to check your timing first though.
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Old 05-15-2010, 06:08 PM
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Well i went and bought a pair of aftermarket o2 sensors and a narrow band gauge from IEQUUS. timing set to 16* idle at 1000 in park. at 200 degrees. I stepped into it hard and the A/R gauge went DEAD lean and died. 80 pri/ 86 sec .0625 primary squirter comes in instantly and 6.5 pv primary plugged secondary. Bigger carb?
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Old 05-15-2010, 08:45 PM
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Quote:
Originally Posted by mistermisfit
I stepped into it hard and the A/R gauge went DEAD lean and died. Bigger carb?
You have determined that the problem is the ratio of fuel to air, not the quantity of fuel/air mixture delivered into the motor, so you don't need more carburetor, you need to fatten up the carb you have and pay attention to F-BIRD'88's tutorial about ignition timing and converter stall.
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