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Thread: ATTN: Black Foxbody Mustang 5.0

  1. #41
    Owner AutoMods's Avatar
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    i'm not sure if this applies to a carbed cars but the cars i have seen do not bog if they are a little bit off on the mixture.

    It takes afr's in the 9's area to make dsm's bog unless its running high boost. perhaps harder to make an NA car bog. My ls1 I have never made it bog by running rich. On the ls1 I can definitely feel the loss in power in the high 9's afrs but it still doesn't bog. Never played with the 8's because thats getting ridiculous. I aim for low 11's. Being a naturally aspirated car you should aim for maybe mid 12's afrs. As for running lean, no bogging either. I notice idle stumbling leaner then 18:1 but I don't play with leaning it out at wot because its dangerous.

    My point is that i'd guess your fuel would have to be probably be at least 15% from normal to make it bog. I noticed you mentioned making a 4% change above.

    Once you get spoiled with great tuning tools like widebands and logging everything on your laptop and sitting in your living room changing your tune its hard to imagine doing it any other way. I mentioned it before but I have $130 Innovate widebands here, might be a good investment for you. Not sure how many carb guys run widebands. Seems odd to me for a carbed car to have a wideband because its old school mixed with a modern tuning tool. don't see why it wouldn't be helpful though.
    Last edited by AutoMods; 03-12-2011 at 07:35 PM.
    9.875@150mph
    2012 Iowa Manual Shootout Champion, on low boost setting. -Flying Ryan
    "The bitterness of poor quality remains long after the sweetness of low price is forgotten." - Ben Franklin

  2. #42
    Senior Member z28z34man's Avatar
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    I want a wide band on my camaro and i would like to log a few other parameters with it.

    also an fyi i have heard most carb issues that people can't figure out are timing issues
    2001 Buick regal GS stock

    1984 Chevy Camaro z28 I have a 350 bored 40 over, pro top lines 180's, rpm air gap, proform 750, Headman headers true duals v force muffler , Flat top pistons, comp cam xe274-h10, comp cams ultra pro mag 1.6 roller rockers, 700r4, Vigilante 3200 stall

    2003 Avalanche stock

  3. #43
    Senior Member Caleb's Avatar
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    I may look at a wide band, probably wouldn't be a bad idea with my near future build coming up. I'll look into it.
    Last edited by Caleb; 03-13-2011 at 08:53 PM.
    Car: 1985 Firebird
    Engine: 355sbc
    - Specs: Edelbrock Performer RPM Top End Kit (1,500-6,500)
    - Cast Crank, Powdermetal Rods, Flat Top Hypereutecnic Pistons
    Transmission: TH350 w/ B&M 3k Stall (Built By: Fountain Transmission)
    Rear-End: GM Posi 10bolt w/ 3.23's and Radial T/A's.

    1/4 Best:
    12.51 @ 109 (on street tires)
    12.99 Pass: http://www.youtube.com/watch?v=pn1VRluOsws

  4. #44
    Senior Member Deimos's Avatar
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    you better build something a fuel injected supercharged monster, you're gonna need it...
    well I guess the camaro is staying good project for my kid.

  5. #45
    Senior Member Caleb's Avatar
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    Purchased a return bypass fuel regulator, see if this fixes the issues, I'll keep to updated Friday :-). My guess its vapor lock since its only a dead end regulator. Well see.
    Car: 1985 Firebird
    Engine: 355sbc
    - Specs: Edelbrock Performer RPM Top End Kit (1,500-6,500)
    - Cast Crank, Powdermetal Rods, Flat Top Hypereutecnic Pistons
    Transmission: TH350 w/ B&M 3k Stall (Built By: Fountain Transmission)
    Rear-End: GM Posi 10bolt w/ 3.23's and Radial T/A's.

    1/4 Best:
    12.51 @ 109 (on street tires)
    12.99 Pass: http://www.youtube.com/watch?v=pn1VRluOsws

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