Thread: Carburetor Size??
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02-22-2010 07:28 PM #1
Carburetor Size??
I have a 383 stroker, aluminum heads 64cc, aluminum roller rockers, 557 cam ( not sure of duration) Looking for a good 750 carb for it. Thanks
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06-08-2010 12:48 PM #2
A 750 seems a bit large for that motor. 550-600 is probably good for a street/strip setup.
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06-08-2010 02:12 PM #3
It'll make the most power with a 750. Driveability (throttle response) may be a little better with smaller primary venturis.PLANET EARTH, INSANE ASYLUM FOR THE UNIVERSE.
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06-08-2010 07:13 PM #4
If you haven't yet purchased a manifold, I'd recommend a Performer RPM spread bore and a 750 Q-jet. You'll be very pleased with the results. GM used this carb on 305 - 350 engines and it just flat performs. There's nothing like to sound of those monster secondaries coming to life!"Where the people fear the government you have tyranny. Where the government fears the people you have liberty." John Basil Barnhil
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06-10-2010 02:22 AM #5
HemiTCoupe
Anyone can cut one up, but! only some can put it back together looking cool!
Steel is real, anyone can get a glass one.
Pro Street Full Fendered '27 Ford T Coupe -392 Hemi with Electornic Hilborn injection
1927 Ford T Tudor Sedan -CPI Vortec 4.3
'90 S-15 GMC pick up
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06-10-2010 06:17 AM #6
Ken,
My stroker sounds similar to yours and I run the 770 Street Demon on mine. It was dyno'd with that carb and set-up at 457hp. I run the Preformer Air Gap manifold with a 1" spacer. My cam is a .248 duration int/exh with a 613 lift as I recall. As folks have commented, so much comes into play on choice of a carb. What trans do you run? I run a shift kitted 700R4 with 2800 stall. I am totally happy with how mines runs out...
My 2 cents worth - Greg
Greg Kline
'65 Chevelle Malibu
Everett, WA
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06-10-2010 07:28 AM #7
I realize I am posting to a carb thread/crowd and should likely find a rock to hide under after this entry.It is off topic sort of too.Well it is a fuel system.I suggest this O/P looks at Edelbrock EFI fuel injection systems which is tune on the fly and has systems that are large enough to support the size of his engine.The newer versions are SFI,but pricey.Good Bye
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06-10-2010 02:43 PM #8
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06-10-2010 03:52 PM #9
All deppends on cubic inches and how many Rpms it will turn.
I think Bluvelle is probably closer to the carb size.
750 is to small for my built 351 Cleveland.
Really depends on how hard he's gonna run it.
Also thats a great choise on a intake to Bluvelle.
Kurt
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06-10-2010 05:24 PM #10
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06-11-2010 04:34 AM #11
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06-11-2010 08:08 AM #12
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06-11-2010 09:30 AM #13
I have a 383 that was dyno'd at 450 hp/468 ft lbs of torque. I run an Edelbrock 750. I know I probably could have made few more hp with a Holley, but I like the Edelbrock because I can get 20 mpg with it out on the highway. Any of the carbs mentioned will work well for you. It essentially boils down to a matter of personal preference.
Lynn
'32 3W
There's no 12 step program for stupid!
http://photo.net/photos/Lynn%20Johanson
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06-14-2010 09:14 AM #14
best for cost effective is the above mentioned qjet. "750" qjets have flow tested near and above 800cfm with the spread bore you get awesome throttle response for the street and good milage (as long as you keep your foot out of it )as far as intake edelbrock victor jr. air gap is almost fool proof to make power with
edit: qjet can also be reworked to flow over 1000 cfm so it can grow with you
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06-14-2010 10:01 AM #15
Since you live in Illinois like I do, I would recommend the Performer RPM intake rather than the Air Gap if you plan to drive it is cool or cold weather. Air Gap intakes do not like cold weather. If it is a fair weather car, then it won't matter.
Lynn
'32 3W
There's no 12 step program for stupid!
http://photo.net/photos/Lynn%20Johanson
Welcome to CHR. I think that you need to hook up your vacuum advance. At part throttle when cruising you have less air and fuel in each cylinder, and the air-fuel mixture is not as densely packed...
MSD 8360 distributor vacuum advance