I have 2 questions, but i am looking for particular answers. First off, I have a q-jet off of a 1970 350 i want to use on my 350 i will be building. Any problems with these besides performance issues? If i dont use a q-jet, what is a good carb to use without over carbing. i am shooting for 300+ horsepower, but i dont want a gas guzzler. Also, i want to use an open element filter. I understand all the hot air problems but what are you guys opinions on these?
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Quote:
<font face="Verdana, Arial" size="2">Originally posted by unknown_host:
I have 2 questions, but i am looking for particular answers. First off, I have a q-jet off of a 1970 350 i want to use on my 350 i will be building. Any problems with these besides performance issues? If i dont use a q-jet, what is a good carb to use without over carbing. i am shooting for 300+ horsepower, but i dont want a gas guzzler. Also, i want to use an open element filter. I understand all the hot air problems but what are you guys opinions on these?</font>
the quadrajet would be fine for fuel mileage and power. So would a Carter Thermoquad.<font face="Verdana, Arial" size="2">Originally posted by unknown_host:
I have 2 questions, but i am looking for particular answers. First off, I have a q-jet off of a 1970 350 i want to use on my 350 i will be building. Any problems with these besides performance issues? If i dont use a q-jet, what is a good carb to use without over carbing. i am shooting for 300+ horsepower, but i dont want a gas guzzler. Also, i want to use an open element filter. I understand all the hot air problems but what are you guys opinions on these?</font>
Fuel mileage is significantly better with warmer air entering the carburetor, but power would be way down.
The Carb Shop makes a very efficient and powerful quadrajet carb.
Senior Member
Here's a loaded question!
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84 Camaro ZZ4 with HOT cam. 1.88 60' (12.98 @ 105MPH E.T.)
Recently Ported Heads, Installed Larger Race-Flo Valves and RPM Air Gap Intake (No new times)
Other Mods: You name it and I have probably changed it.
2001 Dodge Ram Quad Cab 5.9L 4*2
The Bowtie
ASE Certified Auto Tech
LIVE AND DIE BY THE ALMIGHTY BOWTIE!
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84 Camaro ZZ4 with HOT cam. 1.88 60' (12.98 @ 105MPH E.T.)
Recently Ported Heads, Installed Larger Race-Flo Valves and RPM Air Gap Intake (No new times)
Other Mods: You name it and I have probably changed it.
2001 Dodge Ram Quad Cab 5.9L 4*2
The Bowtie
ASE Certified Auto Tech
LIVE AND DIE BY THE ALMIGHTY BOWTIE!
Moderator
I had a Thermoquad on my 350, the small primaries gave good mileage but I could never get rid of the bog when the secondaries opened up.
Senior Member
Go for a Holley carb. YOu will love it! 
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Big 454 72 Chevy Nova
383 86 Camaro Z28
10.5:1compression 186 casting Heads,234dur.488lift exh&int,Edelbrock performer intake, Holley750 vac.sec 400 crank,flat top pistons,edelbrock valve springs and lifters,tranny shift kit,kickdown kit and tranny oil cooler. Will install 3.73's later on and might go with a more aggresive cam.
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Big 454 72 Chevy Nova
383 86 Camaro Z28
10.5:1compression 186 casting Heads,234dur.488lift exh&int,Edelbrock performer intake, Holley750 vac.sec 400 crank,flat top pistons,edelbrock valve springs and lifters,tranny shift kit,kickdown kit and tranny oil cooler. Will install 3.73's later on and might go with a more aggresive cam.
Tags 14, 350, air, best, carburetor, carburetors, cleaner, sbc, size