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01-27-2003, 07:11 PM
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#1 |
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Project 7dos
Join Date: Aug 2001
Location: Abilene, Texas
Posts: 876
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Demon CARBS<<<<<<
Well we got the motor back in the truck yesterday(Flat Cam) anyway, we went with our Demon 650 Cfm carb. Well we put it in and it just keeps backfiring through the carb....What the heck is wrong with it?? We set the time and moved it around but nothing. What do you think???
Holly Street Avenger???? Best way to go maybe..... Thanks Jason
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7DOS - 1972 C-10 350/350 Porterbuilt/Accuair 20x8.5/20x10 Ride Low or Die PSSST - Yes it's bagged. 7dos build thread: http://67-72chevytrucks.com/vboard/s...d.php?t=610290 |
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01-27-2003, 08:27 PM
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#2 |
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Used to have a truck
Join Date: May 2002
Location: port orchard WA
Posts: 1,552
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unless youve got the fuel level WAY too high backfiring though the carb isnt the carbs fault. Make sure your ignition timing is where it should be ( after verifying your float level ) ...Then its on to rocker arm setting ( likely ) or cam setup.
BTW cams dont just go flat without some help . What happened ? Are you sure your not repeating the mistakes that caused the flat lobe?
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No truck :-( Last edited by mikep; 01-27-2003 at 08:36 PM. |
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01-27-2003, 08:45 PM
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#3 |
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Senior Member
Join Date: Dec 2001
Location: Redding,CA...USA
Posts: 4,736
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what kind of intake are you running?..might be a vacuum leak..if you have a performer without an adapter. this can be a problem
Jim
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It's called "drag racing" if they called it "tic..tic..WHAM!..BANG! F*&K!!!", they'd have to keep the magazines under the counter with the other men's publications click the clicky to join the site.... http://67-72chevytrucks.com/vboard/payments.php 67 lwb..first hotrod in 25 years..540 best ET is 9.45 @ 141.44 Anderson,CA |
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01-27-2003, 09:19 PM
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#4 |
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Account Suspended
Join Date: Oct 2002
Location: Olathe, KS
Posts: 2,300
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Double check your firing order.. its easy to cross 5 and 7. It will cause it to run a bit rough but also backfire through the intake.
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01-27-2003, 09:23 PM
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#5 |
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Senior Member
Join Date: Aug 2002
Location: Valley Center KS
Posts: 3,524
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Might also check that the distributor isn't 180 degrees off.
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01-27-2003, 09:24 PM
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#6 |
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Registered User
Join Date: Mar 2002
Location: Bondurant, IA but in Worcester, MA for school
Posts: 767
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THis same thing was happening to me when I put my new HEI distibutor in. My timing was way retarded...check that again.
HotRod
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1970 Chevy C-20 350 V-8 Turbo 350 w/ shift kit Dana 60 w/ 4.10 gears AND Powr-Loc POSI New Additions: Summit Headers 135amp alternator Proform HEI Edelbrock 1406 600cfm carb Sunpro Tach Powr-Loc POSI Edelbrock Performer RPM Intake MSD 6A Ignition Box AIM: HotRod929 Visit My Site: http://1970chevy.netfirms.com/ |
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