Quadrajunk question... - The 1947 - Present Chevrolet & GMC Truck Message Board Network

ckhd · 03-17-2003, 03:41 PM

Is there anywhere that I can find jetting info for a q-jet? The guy I bought my 'burb from was playing with jet sizes (he told me that), and he's got way too big of jets in it. Thing smokes almost as black as a turned up diesel! Well, not really, but I can tell it's running very rich.

neonlarry · 03-17-2003, 06:17 PM

I wouldn't quite call a carb that you can rework to flow almost 1100cfm (yes thats 1100) and still work on a stock motor junk.
But to answer your question try these sites:
http://www.73-87.com/garage/myqjet.htm
http://www.corvettefaq.com/greatest.asp
or get HP Books - Rochetter Carburetors by David Roe

ckhd · 03-17-2003, 07:48 PM

Larry -- didn't mean to offend. I'd take one over a holley any day. In fact, it's what all four of my 67-72 use. Wouldn't have it any other way (except maybe fuel injection)!

Those links are great. That corvette site looks like it has a lot of info. Thanks!

my67c20 · 03-17-2003, 07:55 PM

Ditto on the carb. My q-jet leaks, pops and hisses. Did some research and found a company in Burbank, CA called BFIC carbs only. For under $200 they will rebuild one to near factory condition. Web site is www.carbsonly.com. They can have it back to you in under 5 days. Called em myself and next bonus check mine is going out.

03-17-2003, 03:41 PM	#1
ckhd Registered User Join Date: Oct 2000 Location: St. Johns, Arizona Posts: 2,660	Quadrajunk question... Is there anywhere that I can find jetting info for a q-jet? The guy I bought my 'burb from was playing with jet sizes (he told me that), and he's got way too big of jets in it. Thing smokes almost as black as a turned up diesel! Well, not really, but I can tell it's running very rich. __________________ my 2¢ - t.i.o.l.i. Bowen 1968 K20 fleet 1969 K10 swb fleet 1972 K10 Suburban 1972 C10 lwb step 1992 K1500 'burb 1995 K2500 'burb 1997 C1500 'burb 1999 K1500 2000 K1500 'burb Why do I own so many Suburbans?

03-17-2003, 06:17 PM	#2
neonlarry Registered User Join Date: Feb 2002 Location: Vacaville, CA Posts: 2,745	I wouldn't quite call a carb that you can rework to flow almost 1100cfm (yes thats 1100) and still work on a stock motor junk. But to answer your question try these sites: http://www.73-87.com/garage/myqjet.htm http://www.corvettefaq.com/greatest.asp or get HP Books - Rochetter Carburetors by David Roe __________________ 70 C/10 Light Red 350/TH350, HEI, Duals w/40 series Flows, 91 seat, LED taillights 99 Pontiac S/C GTP, SLP Ram Air hood, GMPP Konis & springs 95 Neon ACR, MP PCM, AFX UDP, 3.0 CAI Last edited by neonlarry; 03-17-2003 at 07:31 PM.

03-17-2003, 07:48 PM	#3
ckhd Registered User Join Date: Oct 2000 Location: St. Johns, Arizona Posts: 2,660	Larry -- didn't mean to offend. I'd take one over a holley any day. In fact, it's what all four of my 67-72 use. Wouldn't have it any other way (except maybe fuel injection)! Those links are great. That corvette site looks like it has a lot of info. Thanks! __________________ my 2¢ - t.i.o.l.i. Bowen 1968 K20 fleet 1969 K10 swb fleet 1972 K10 Suburban 1972 C10 lwb step 1992 K1500 'burb 1995 K2500 'burb 1997 C1500 'burb 1999 K1500 2000 K1500 'burb Why do I own so many Suburbans?

03-17-2003, 07:55 PM	#4
my67c20 Registered User Join Date: Jun 2002 Location: Tucson AZ by way of WI & CA Posts: 510	Ditto on the carb. My q-jet leaks, pops and hisses. Did some research and found a company in Burbank, CA called BFIC carbs only. For under $200 they will rebuild one to near factory condition. Web site is www.carbsonly.com. They can have it back to you in under 5 days. Called em myself and next bonus check mine is going out.



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