Reversed Q-jet carb......... - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Dale DuBose · 10-01-2002, 01:29 PM

I am running the orriginal Q-jet carb on a mostly stock 350. For better off road performance, steep hills and angles, I have heard that you can mount the carb backward useing a van accelerator cable.

Can anyone tell me more about this? What year van cable? How well does it work? What all do I need to get?

HeavyK20 · 10-01-2002, 01:47 PM

Aren't the holes in the manifold different sizes for the primaries and secondaries with a Quadrajunk?

6869704X4 · 10-01-2002, 03:04 PM

Ive never heard of mounting the King of off-road carbs, the Q-jet, backwards.

Ratpowerd67 · 10-01-2002, 05:33 PM

yup. thats the king !

*Fast68Chevy* · 10-03-2002, 02:55 AM

i cant see the secondaries being able to open very far when carb is mounted backwards,,, as far as i have seen and heard, the colorado offroaderws dont do this, who made mention of this to you ?

interesting,..

Blazer1970 · 10-03-2002, 07:24 AM

Some of the Ford and Dodge guys do mount Q-Jets backward. I am pretty sure they do it to get a slight advantage when climbing very steep hills. This would be since the bowl would then be on the low side, so gas would not spill out the vents. This would be where Q-jets are being adapted to a square bore manifold, so it doesn't really matter which way you mount it, aside from getting a throttle cable hooked up. I think the same benefit can be achieved by extending the bowl vents with a piece of hose, and running the carb the way god intended it.

6869704X4 · 10-03-2002, 04:05 PM

Quote:

Originally posted by Blazer1970
Some of the Ford and Dodge guys do mount Q-Jets backward.

There ya go. Thats cause they spend most of their time backing up out of places they couldnt get through.

kpf · 10-03-2002, 05:51 PM

correct me if I'm wrong but turning a q-jet around backwards??
It has been awhile but how in the $%^& does that work?
Is this really a joke post?

Blazer1970 · 10-04-2002, 07:48 AM

Quote:

Is this really a joke post?

No, it is true. Read what I said above.

6869704X4 · 10-04-2002, 01:30 PM

I think the carb would react in a similar manor to climbing a steep hill as it would to rapid acceleration.

ckhd · 10-18-2002, 10:02 PM

Quote:

There ya go. Thats cause they spend most of their time backing up out of places they couldnt get through.

That's FUNNY!! I was going to make a crack about it being ford/dodge, but that's about the best that could be said!

*Zkast* · 10-18-2002, 11:42 PM

You could take a quad to holley adapter, then also add a holley to quad adapter but turn it around. Should fit just fine I believe.

*Zkast* · 10-18-2002, 11:44 PM

2 of these should do the trick;

neonlarry · 10-29-2002, 02:32 AM

Here is a thread that has some pics and other information about how it works.

http://www.pirate4x4.com/forum/showt...threadid=90948

10-01-2002, 01:29 PM	#1
Dale DuBose Registered User Join Date: Oct 2002 Posts: 27	Reversed Q-jet carb......... I am running the orriginal Q-jet carb on a mostly stock 350. For better off road performance, steep hills and angles, I have heard that you can mount the carb backward useing a van accelerator cable. Can anyone tell me more about this? What year van cable? How well does it work? What all do I need to get? __________________ I need all the help I can get.

10-01-2002, 01:47 PM	#2
HeavyK20 Registered User Join Date: Dec 2001 Location: New Richmond, WI Posts: 547	Aren't the holes in the manifold different sizes for the primaries and secondaries with a Quadrajunk? __________________ Eric 1969 K20, 465/205 package

10-01-2002, 03:04 PM	#3
6869704X4 Registered User Join Date: Jul 2002 Location: SE NM Posts: 769	Ive never heard of mounting the King of off-road carbs, the Q-jet, backwards. __________________ The more I learn about women, the more I love my truck.

10-03-2002, 07:24 AM	#6
Blazer1970 Registered User Join Date: Dec 1999 Location: Old Mission, MI, USA Posts: 2,510	Some of the Ford and Dodge guys do mount Q-Jets backward. I am pretty sure they do it to get a slight advantage when climbing very steep hills. This would be since the bowl would then be on the low side, so gas would not spill out the vents. This would be where Q-jets are being adapted to a square bore manifold, so it doesn't really matter which way you mount it, aside from getting a throttle cable hooked up. I think the same benefit can be achieved by extending the bowl vents with a piece of hose, and running the carb the way god intended it. __________________ Tim

10-03-2002, 05:51 PM	#8
kpf Registered User Join Date: Jun 2002 Location: Camas, Wa Posts: 58	?????? correct me if I'm wrong but turning a q-jet around backwards?? It has been awhile but how in the $%^& does that work? Is this really a joke post?

10-01-2002, 05:33 PM	#4
Ratpowerd67 Registered User Join Date: Aug 2002 Location: Trenton ,Texas Posts: 328	yup. thats the king !

10-03-2002, 02:55 AM	#5
Fast68Chevy Account Suspended Join Date: May 2000 Location: IL Posts: 0	i cant see the secondaries being able to open very far when carb is mounted backwards,,, as far as i have seen and heard, the colorado offroaderws dont do this, who made mention of this to you ? interesting,..

10-04-2002, 01:30 PM	#10
6869704X4 Registered User Join Date: Jul 2002 Location: SE NM Posts: 769	I think the carb would react in a similar manor to climbing a steep hill as it would to rapid acceleration. __________________ The more I learn about women, the more I love my truck.

10-18-2002, 11:42 PM	#12
Zkast Account Suspended Join Date: May 2002 Location: Olathe, Kansas Posts: 929	You could take a quad to holley adapter, then also add a holley to quad adapter but turn it around. Should fit just fine I believe.

10-18-2002, 11:44 PM	#13
Zkast Account Suspended Join Date: May 2002 Location: Olathe, Kansas Posts: 929	2 of these should do the trick; Attached Images

10-29-2002, 02:32 AM	#14
neonlarry Registered User Join Date: Feb 2002 Location: Vacaville, CA Posts: 2,746	Here is a thread that has some pics and other information about how it works. http://www.pirate4x4.com/forum/showt...threadid=90948 __________________ 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



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