383 carb ???
Thread Starter
Le Mans Master
Joined: Jan 2004
Posts: 8,295
Likes: 30
From: one night in Bangkok you are never lonely
383 carb ???
I am helping a friend over here and need Carburetor info for a 383, SBC motor with an Ebelbrock Performer air gap duel plain square spread boar manifold. Currently have a 600cfm Edelbrock carburetor and it seams to be working good. Will a bigger cfm carburetor work better and still give decent gas mileage?
The heads are 190 CC intake ports, 10 to 1 compresion cam is Duration at 0.006" Lift: Intake: 308° Exhaust: 318°
Duration at 0.050" Lift: Intake: 234° Exhaust: 244°
Lift at Cam: Intake: 0.325" Exhaust: 0.340"
Lift at Valve: Intake: 0.488" Exhaust: 0.510"
Timing at 0.050" lift: Open Close
Intake: 10° BTDC 44° ABDC
Exhaust: 59° BBDC 5° ATDC
Centerlines: Lobe Separation - 112° Intake Centerline - 107°
The heads are 190 CC intake ports, 10 to 1 compresion cam is Duration at 0.006" Lift: Intake: 308° Exhaust: 318°
Duration at 0.050" Lift: Intake: 234° Exhaust: 244°
Lift at Cam: Intake: 0.325" Exhaust: 0.340"
Lift at Valve: Intake: 0.488" Exhaust: 0.510"
Timing at 0.050" lift: Open Close
Intake: 10° BTDC 44° ABDC
Exhaust: 59° BBDC 5° ATDC
Centerlines: Lobe Separation - 112° Intake Centerline - 107°
Last edited by Bangkok Dean; Sep 27, 2008 at 02:33 AM.
Le Mans Master
Joined: Jun 2004
Posts: 6,231
Likes: 65
From: Seattle WA
St. Jude Donor '14
If by "work better" you mean make more power, I'd say no. That sizing likely keeps you out of the secondaries in cruise and isn't holding the engine back unless you're turning > 6000 RPM. There's always power to be found in a good tune, and there are certainly more tuneable carbs.
Instructor
Joined: Jul 2008
Posts: 211
Likes: 0
From: Cameron NC
I'm running a 388 Stroker with about 400HP and a Holley 650 CFM spreadbore carb. 650 is plenty CFM for a streetable car. If you are looking to take it to the drag races every weekend, then a bigger carb could give more power.
