Can anyone give me timing and carb info. - Team Camaro Tech
Troubleshooting Diagnosing problems done here.

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post #1 of 4 (permalink) Old Sep 29th, 02, 08:33 AM Thread Starter
Join Date: Nov 2000
Posts: 84
Here is whatI am looking for. What would be typical symptoms of timing out of place (ie set to far BTC or not enough BTC) and the carb jet screws set to far in or to far out. I have a 73 chev 350 with a Roch
q-jet. The problem I am having is that I know this motor does not have a stock cam and I have no clue what the specs of the cam are. Right now it runs pretty good if you jsut give it moderate throttle all the way but if you ask more of it it bogs (sputtering) then takes off. Anyway, the irst part of this is just to help me in the future and the second part (sputtering), I will take any advice you can give. This is what I have done so far.
New dist cap, points, condensor, rotor, plugs, plug wires, starter, timing chain, rebuilt Q-jet, all fluids and filters, belts & hoses. Have good vaccuum at dist.
gateruner is offline  
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post #2 of 4 (permalink) Old Sep 30th, 02, 08:55 AM
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Join Date: Aug 2000
Location: seattle, wa
Posts: 172
If you have a different carb, give it a try and see if you need to rebuild the Q-jet.

Pull the #1 plug and put thumb on hole, turn over the engine untill that cylinder fires. This is top dead center.Make sure you set the timing mark to 0. Set initial to 12 btc. If you ping lower mech advance, if the car is slugish raise the initial.

Do a search on this site,

Stock 67 327 RS
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post #3 of 4 (permalink) Old Sep 30th, 02, 12:50 PM Thread Starter
Join Date: Nov 2000
Posts: 84
I have a rebuilt carb. Here is what I ran into that is puzzling. Set plug wires on distributor correct according to manual. Ran like crap, couldnt keep it running. Advanced all wires on dist top one place and fired off and ran great. have it timed right now about 8 BTC. Problem is with not knowing what the cam specs are we I dont have any idea where to set the timing initially. Apparently it isnt completly correct right now. Buddy of mine said on some cams it could need ot be advanced as much as 20-30 BTC. Maybe he doesnt know diddly but so far he has been pretty right on. This leads me to believe that advancing the plug wires might fit this catagory of needing to be so far advanced. I dont know how to advance timing that far anyway so I am just taking logical guesses. (SWAG) Heck I dont know, maybe the guy who had this puppy before me didnt drop the dist correctly. Keep the advice coming cause this is looking like a guessing game for me right now.
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post #4 of 4 (permalink) Old Sep 30th, 02, 04:02 PM
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Join Date: Jun 2000
Location: LaGrange,Il
Posts: 1,026
I finally got my bog fixed by shortening the shaft on the accelerator pump.
I played with the carb until I noticed that the pump started squirting with the slightest movement, but stopped well before running out of travel, shorteniing the shaft allowed it to sart squirting at the same point, but contine longer, providing the fuel needed for the quick starts.

Mat Klemp is offline  
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