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#1 |
Registered User
Join Date: Feb 2016
Location: Cave City, KY
Posts: 33
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Trying to find Stock Quadrajet Rod and Jet sizes
Well this weekend I'm picking up a complete '68 350 as a core to rebuild since my 307 has always been an underwhelming performer and now has a either a blown head gasket or cracked head. The 350 has a Quadrajet and while my previous experiences with Quadrajets haven't been great (a very poor rebuild by a "professional" and a pitted carb body on another), I'm going to give it another try because neither one of those gave me as much trouble as the Edelbrock 1406 that's on it now. I'm trying to find out the factory jetting and rod sizes for a C10 with a 350 without the air injection so I can have a good baseline to tune from. I've looked in my GM chassis overhaul manual and chassis service manual but neither list any Rod and jet sizes. Any help would be appreciated.
Thanks. Posted via Mobile Device |
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#2 |
Registered User
Join Date: Feb 2016
Location: Cave City, KY
Posts: 33
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Re: Trying to find Stock Quadrajet Rod and Jet sizes
Also has anyone got pictures of a manual pull cable choke setup on a divorced choke Quadrajet or an electric choke Quadrajet converted to manual choke? I don't care much for an electric choke.
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#3 |
Registered User
Join Date: Aug 2006
Location: Redmond, WA
Posts: 6,332
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Re: Trying to find Stock Quadrajet Rod and Jet sizes
I don't have a shop manual handy but I've seen rod and hanger sizes and so on listed in other shop manuals, so there's a chance ours does too. A long shot, but...
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1970 GMC Sierra Grande Custom Camper - Built, not Bought 1969 Pontiac 2+2 427/390 4-speed Coupe 1969 Pontiac 2+2 427/390 4-speed Convertible |
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#4 |
Registered User
![]() Join Date: Oct 2013
Location: CT.
Posts: 260
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Re: Trying to find Stock Quadrajet Rod and Jet sizes
Hello and welcome
Cliff Ruggles book on Quadrajets is very good. |
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#5 |
Registered User
Join Date: Dec 2012
Location: Fort Thomas, KY
Posts: 290
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Re: Trying to find Stock Quadrajet Rod and Jet sizes
I second Cliff Ruggles.
http://www.cliffshighperformance.com/ Call him and give him your carb number and he will tell you what should be in there. He will also ask you a bunch of questions about what your plans are for your build, so be prepared and honest so that he can give you accurate advice. He may suggest something other than stock to get your engine to perform to the level that you desire. Buy his book also, very good resource. It's got a lot technical information besides the rebuild process. I took my standard Q-Jet from my 1972 350 and put it on a 383 stroker that I built with vortec heads. After describing my plans (remember, he will ask a lot of questions), he suggested the proper jets for my application and it has performed flawlessly. It idles great, off the line power is linear, and when the secondaries open, it makes a beautiful sound! Good luck.
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1972 GMC 1500 Super Custom, 383 Stoker, TH350 Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=592157 Engine Thread http://67-72chevytrucks.com/vboard/s...d.php?t=592233 |
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#6 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,607
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Re: Trying to find Stock Quadrajet Rod and Jet sizes
My cousin Lars might have the right info for you in his charts.
http://www.digitalcorvettes.com/foru...ad.php?t=88376 |
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#7 | |
Registered User
![]() Join Date: Nov 2007
Location: Hermiston, OR
Posts: 947
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Re: Trying to find Stock Quadrajet Rod and Jet sizes
Quote:
I rebuilt the quadrajet on my current truck (which is the old carb off my 71) with cliff's jets, rods, air bleeds etc and the thing runs like a champ. Stock doesn't necessarily mean optimal.
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Running in place gets you nowhere fast. -me 1968 GTO 4-spd covnvertible 1970 K-20 4-speed, factory AC. |
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