First off I don't thinnk I'd be running regular gas. Secondly 2 1/2 turns out soulnds like it might be to rich and where is your timing set? You may also have the wrong step up springs in the carb resulting in a rich burn( springs too long) and finally if the acc. pump linkage isn't in the center hole, try putting it there. I'm running 2 500 Edelbrocks on mine with a tunnelram with a Muncie M-22 with 4:10 gears and easy running I average 16-17 mpg. It can take time to nail them in so be patient and let us know how you make out. Good luck
curious about my carb
Hey guys...need to see if anyone might have an answer.This was the second trip I took about 125-130 round trip and used almost a half a tank one way.Average speed was 45-55 most of the way.Engine itself ran good.Am running 600cfm in a 350 small block 4bble.It's an elebrock carb 900rpm in idle 650rpm running.Only thing I can think of is that it's running to rich.Have the screws at around 2-1/2 turned out.Had to put on a regulator last year and pressure is at 3lbs.I do have a 500cfm that was rebuilt last and thinking of swapping it and see if that helps.Also using 89 grade fuel. any tips??
Thanks Terry
Thanks Terry
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What rear end gear ratio?
Don
Don
TerryHey guys...need to see if anyone might have an answer.This was the second trip I took about 125-130 round trip and used almost a half a tank one way.Average speed was 45-55 most of the way.Engine itself ran good.Am running 600cfm in a 350 small block 4bble.It's an elebrock carb 900rpm in idle 650rpm running.Only thing I can think of is that it's running to rich.Have the screws at around 2-1/2 turned out.Had to put on a regulator last year and pressure is at 3lbs.I do have a 500cfm that was rebuilt last and thinking of swapping it and see if that helps.Also using 89 grade fuel. any tips??
Thanks Terry
125 to 130 miles on a 1/2 tank of gas :happy0030: Id be thrilled if I got that , Im gettn 8 miles a gal now, gettn better tho
1/2 tank is around 7.5 gallons ?
130 divide by 7.5 equals 17.33
125 divide by 7.5 equals 16.33
this is good mileage I think, with 2.5 idlers out your running a tad rich on idler circuit tho
Randy ment to say about 130 on a full tank which comes out like yours about 6 miles per gallon.It's running 600 cfm elderbrock turned my screws down to 1-1/2 turns and my regulater down to 3lbs. ass pump is in the center.Have been running reg gas lately will have to move up a grade or two. taking another small trip tommorrow so will see. when I took a quick ride seemed to run better.I did have a 500cfm and got great gas
well took her out for about a 50 mile run and was so much better.Took the screws down to 1-1/2 turns dropped the gas presure from around 4lbs to 2. also drooped my idle down from 950 to 750 in park and ran about 550 in gear.Timming is about 8 but seems to run better used not quite 1/8 of a tank.
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