Q-jet help please
Thread Starter
Pro
Joined: Mar 2015
Posts: 681
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From: Nebraska
Q-jet help please
Ok, So my engine is out. When it was still running, it always smelled a little rich. Now I see the carb has been apart...no big thing, it's almost 40 years old. But I got to thinking that maybe someone tried to jet it or change the rods at one time in the past. Is there a way to find out what the stock jets and rods are supposed to be?
Team Owner
Joined: Sep 2006
Posts: 31,173
Likes: 4,250
From: Westminster Maryland
Hi CT,
Your GM Chassis Service Manual will likely have the information you're looking for in the Carburetor area of Specification Section in rear of the manual.
In my 71 Manual it's pages 12,13, and 14.
Regards,
Alan
Your GM Chassis Service Manual will likely have the information you're looking for in the Carburetor area of Specification Section in rear of the manual.
In my 71 Manual it's pages 12,13, and 14.
Regards,
Alan
Tech Contributor
Joined: Aug 1999
Posts: 14,371
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From: At my Bar drinking and wrenching in Lafayette Colorado
Give me the carb number and I'll give you the specs. Be aware that if the carb has been apart, I can tell you with complete certainty that other things have been changed and are out of whack other than jetting.
Lars
Lars
Thread Starter
Pro
Joined: Mar 2015
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From: Nebraska
Hopefully it hasn't been fooled around with, but after seeing that whoever took it off used silicone on the manifold to carb gasket, I started to worry.
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Thread Starter
Pro
Joined: Mar 2015
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From: Nebraska
Tech Contributor
Joined: Aug 1999
Posts: 14,371
Likes: 6,365
From: At my Bar drinking and wrenching in Lafayette Colorado
Lars
Last edited by lars; Nov 15, 2016 at 09:16 PM.
Thread Starter
Pro
Joined: Mar 2015
Posts: 681
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From: Nebraska
Thanks guys. With any luck i will have my engine put back in soon, 2 weeks i'm guessing. I know the car will start with the carb the way it is, so after the cam is broke in it comes right back off for a rebuild. Thanks again for the help. Lars, your papers on tuning will be quite valuable. Thank You!
Tech Contributor
Joined: Aug 1999
Posts: 14,371
Likes: 6,365
From: At my Bar drinking and wrenching in Lafayette Colorado
17059216 was used on the A, B, F, Y & X model cars (Impala, Camaro, Corvette, Malibu, Nova, Monte Carlo and El Camino) with air conditioning, 350 or 305 and auto trans. 17059203 was only used on Vette and Camaro 350 with manual trans and no air conditioning. This means that the 17059216 had a solenoid & bracket assembly - the 17059203 did not. The 2 carbs also had different throttle bodies: The 17059216 used part number 17062717 with provision for the auto trans kickdown cable on the throttle lever, whereas the 17059203 used throttle body 17061363 which had no kickdown cable provision. The two carbs are otherwise completely identical and used the same parts and jetting components.
Lars
Last edited by lars; Nov 15, 2016 at 09:19 PM.