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#1 |
Garage Queen Material
Join Date: Oct 2002
Location: USA
Posts: 4,129
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engine and carb. updates
okay, i've checked everywhere for a vacuum leak, and i cant find one. the vacuum gauge stays at a steady 15. but the carb still doesnt want to work. the secondaries will open on the bottom butterflies, but the top ones will not open.
the truck runs really, REALLY strong when i get on the gas about halfway. it will pull really hard in first gear. i still only have about 380 miles on it, so i dont wanna take it to far ![]() later this week i'll be getting a temp. carb to use, a 800 edelbrock eps. while thats on, i'll ship my carb back to jegs and then order me a SpeedDemon 650cfm vacuum secondary and the neccasary fuel lines and fittings. the electric fans work great too ![]() |
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#2 |
california fill
Join Date: Apr 2004
Location: Sunny So-Cal
Posts: 694
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What kind of carb? A Quadrajet style, or AFB? You will not be able to "see" the air valve above the secondary butterflies open.. Does it move freely by hand?
pc |
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#3 |
Garage Queen Material
Join Date: Oct 2002
Location: USA
Posts: 4,129
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its a jet stage2 qjet.
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#4 |
Garage Queen Material
Join Date: Oct 2002
Location: USA
Posts: 4,129
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its gonna cost me about $160 for the new carb and all the fuel lines and AN fittings.
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#5 |
5-7 dropped 87 CC Dually
Join Date: Sep 2003
Location: bay city mi
Posts: 326
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Quit screwing around and get that holley you was looking at before.
__________________
I rather be in my 77 Sanger Picklefork Jet Hydro! |
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#6 | |
Garage Queen Material
Join Date: Oct 2002
Location: USA
Posts: 4,129
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Quote:
![]() i'm sure i could get the qjet to run relaly good, but i dont wanna have to drill stuff out and mess with modifing it so much. |
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#7 |
Hotwheels?
Join Date: Dec 2002
Location: Pleasant Hill, CA
Posts: 1,145
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Is your cam THAT radical compared to low85's? I know his was in a 406 and that adds a bit of TQ, but shouldnt you be ok with your 2.73's for a little bit?
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1978 Money Pit - CUSTOM DELUXE!!!! |
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#8 |
Garage Queen Material
Join Date: Oct 2002
Location: USA
Posts: 4,129
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the gears will work fine for a while
![]() here are the specs on the cam: Intake valve gross lift/duration: .490"/290° Exhaust valve gross lift/duration: .490"/297° Intake valve duration @ .050": 235° Exhaust valve duration @ .050": 240° Rocker arm ratio: 1.5 Intake valve lobe centerline: 107° Lobe separation: 112° |
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#9 |
You get what you pay for
![]() Join Date: Dec 1999
Location: Cherryville, NC
Posts: 4,798
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Eric,
no carb you buy will be a bolt on and drive situation. There is going to be tuning involved no matter what. If you don't know how to tune a carb of any kind, it's time to learn and quit spending money trying to find a carb that will work without it. It ain't going to happen.
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Mike 1985 Chevy C-10 |
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#10 | |
Garage Queen Material
Join Date: Oct 2002
Location: USA
Posts: 4,129
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Quote:
i've tried everything with the carb besides taking it off and modding it. the idle mixture screws do nothing for it, every single vacuum port on the carb is full manifold vacuum, and the idle speed screw came to my house shipped with teh screw cross threaded. |
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