Q-jet?
Thread Starter
Staging Lane
Joined: Jan 2012
Posts: 66
Likes: 0
Q-jet? Has anyone had any experiences with attempting a Quadrajet on an LS? Before I hear a bunch of bad reactions,, I'm good at tuning and modifying them. They work great off road and I've been able to out mileage some throttle body and TPI systems with them. I can usually out mileage any holley. My apologies up front if anyones offended,, just curious. Thanks
People have talked about using them but so far I don't remember seeing anyone who says they having one running.
No one makes a spread bore manifold so you will have to suffer adapters.
And yeah, it usually pisses somebody off just talking about them.
No one makes a spread bore manifold so you will have to suffer adapters.
And yeah, it usually pisses somebody off just talking about them.
Last edited by Pop N Wood; Jan 27, 2012 at 10:08 PM.
On The Tree
Joined: May 2010
Posts: 102
Likes: 1
From: THE GARDEN STATE
a q-jet would look great on an ls i would suffer with the adapter just for the sake of seeing people look at it like a rat turd in a bowl of rice.. but what would make it even more interesting would be to machine a whole in the adapter for a sneaky little nitro shot...lol thats what hotrodding is about using your own opinion of whats cool.. and beating your friends with that not just buying power out of the box..
Thread Starter
Staging Lane
Joined: Jan 2012
Posts: 66
Likes: 0
Yea, I already thought about doing a power shot setup thru the adapter. Including grinding and polishing it to try and blend it in with the manifold. The 1/2" space under it should also be an advantage on the GM dual plane intake. Not my first attempt with high perf,,just my first LS build. Was always good with carbs and tuning them. Spreadbores done right still go fast, hit hard and save a "little" bit of gas.
Last edited by cuda620; Jan 27, 2012 at 06:55 PM. Reason: Incorrect spelling
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Thread Starter
Staging Lane
Joined: Jan 2012
Posts: 66
Likes: 0
Thanks. I"m gonna see. Ran this one for years on a sbc 355 that I built. After many recalibrations,,it did great. I even swapped on holleys,,edelbrocks,,& afb's none as good. It was of a 454 so now I'm supe I'm gonna have to jet it back up. Otta be fun on an L92/LS3,,comp cams,,Lingenfelter stage III heads,ETC,ETC. Keep you posted.
On The Tree
Joined: May 2010
Posts: 102
Likes: 1
From: THE GARDEN STATE
this is a nice carb to use if you dont mind the price.. http://smicarburetor.com/products/sf...9/productID/76
Staging Lane
Joined: Aug 2011
Posts: 65
Likes: 1
From: Hawaii
I'm having one built right now to put on my my 5.3l which I will be putting in the car asap. Gonna run it on the current terd 305 mean while untill I get all the parts collected for the ls swap. I want to know how to or if anyone has ever successfully done a qjet in a blow thru set up. I have a guy / mentor who is in love with the q jets and is starting to put his 40yrs experience with them into a q jet rebuilding service...I will be running the adapter with a 150 shot plate kit under it just to freak people out...lol. If anyone knows anything about a qjet in a blowthru set up please let me know. I think with it tuned right on a 5.3l 23 mpg is possible, or at least thats my goal. 373 gear with a 2004r trans in a 88 monte carlo ss
Thread Starter
Staging Lane
Joined: Jan 2012
Posts: 66
Likes: 0
Q-Jet Done a blow thru turbo set up on a 427 years ago. Bonnet set up didn't work. Way to many places for air pressure to leak out,,,And fuel. Secondary flap would hang open. Went to a brass float and a fully enclosed carb and worked fine. Need to connect boost pressure to fuel pressure regulator though with a decent pump so pressure will increase with boost. Belt driven should be same principal. Good Luck.
Teching In
Joined: Jul 2011
Posts: 9
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If you want to run a Q-jet (as I do on my 408 SBC), go to the expert, Cliff Ruggles. It may take some time to get one from him as he's back-logged, but it's worth the wait. Research Cliff's Performance. I used to run one of Sean Murphy's from SMI. Not bad but not a Cliff Ruggles Q-Jet.
Joel
PolkCountySpeed.com
Joel
PolkCountySpeed.com
