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Excessive fuel consumption SBC 350


Miles

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I just finished installing a SBC 350 in my 240Z. It is consuming gas such that a 18 mile round trip to work used about 1/2 tanks of gas. Data:

 

Engine: GM Goodwrench 350/290 HP crate engine

Cam: .450"/.460 lift, 222deg/222deg duration

Carb: Edelbrock 1406 performer electric choke

Distributor: MSD HEI

Timing: 8 deg TDC

Temp: runs about 185 deg using JTR radiator and electric fan

Transmission: Camaro T5 rebuilt

Differential: R200 3.54

Fuel pump: Edelbrock EDL-1791

Fuel pressure: 6 psi

Idles ragged

Off idle throttle is a little slow.

 

Driving around town the fuel gage goes down fast. Any ideas.

 

Thanks

 

Miles

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  • 2 months later...

is that fuel pressure recommended for that carb?check the float level-i have had it off on new carbs out of the box.is the cam timing correct if you changed the cam?is the timing pointer correct or did you change something from the motor.carb will probably have to be rejetted -try to find a wide band 02 set up for tuning.

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