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What will be my best timing stetting on my chevy 350 30 over with extram cam..15 degree or 12 degree at idle

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For peak performance you want to set the timing with maximum advance as high as you can go without detonation. Then if the idle timing isn't right you modify the distributor to achieve idle and high rpm timing where you want them. A distributor shop can set up your advance curve for you if you don't know how.

Posted on Mar 30, 2015

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OK I have a 1976 Chevy C20 pickup with a 350 I just rebuilt the motor and now it won't idle on it's own and I have no power in 3rd gear can anyone help me


check for vacuum leak for the idle or idle mixture screws settings
no power in 3rd gear can be low fuel level, filter problems , ignition timing ( static is 12 degrees BTDC idle )
more than likely a vacuum hose missing after assembly

May 22, 2016 | Cars & Trucks

1 Answer

I put a new distributor in my 73 355 engine it runs but i need to know how many degrees to set for base timing


the best way to set timing on a '73 is with a vacuum gauge, but You can set it to 7btc. after adjusting it, look at the advance while snapping the throttle; it should advance 12 to 15 degrees.

Apr 04, 2013 | Cars & Trucks

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Chevy lumina 3.1 timing base mod


does your cam have 2 marks on it? 1 might be on a tooth and the other in a little more from the edge, they will be opposite eachother.. if so i think the one on the tooth is the right one.. it sounds like you are 180 degrees off

Jan 31, 2013 | 1993 Chevrolet Lumina

1 Answer

Ticking Noise 1990 Chevy Cheyenne pickup


use a timing light to check the degrees btdc
Should be 10-12 degrees btdc
could be injector click or hydraulic cam followers noise although I thing that would be audible on the coast action as well
check fuel pump as they click when working

May 27, 2017 | Cars & Trucks

1 Answer

350 chevy with elebrook carb will not idle below 2500 can you help? just rebuilt this carb. every thing went good all settings done by the book. very clean inside all jets cleaned or replaced. re check...


Manually operate the choke mechanism and watch to make sure it fully releases. Quite often mistakes can occur when putting the pieces back together and it won't fully release off fast idle.Are you absolutely positive that you didn't forget an o- ring or ball when you put the carb back together? Is there any chance there is a gasket upside down? Could the power valve be in wrong? These types of things could create that problem, there is too much gas going through your idle circuit.What happens when you turn in the idle screws? Are you sure about the timing? I don't have specs for a 1/2 ton but all the specs in my Chilton give me 6 degrees in California and 8 degrees everywhere else. These numbers cover all models of cars for a 1978 350. Hope this helps.

Oct 24, 2010 | 1978 Chevrolet C1500

1 Answer

I want ti install timing chain in 350 chevy. What TDC marks are used if i use Zoom timing chain whith 3 key way and i use 4 degrees adv. I want TDC with the 4 degrees at crank. I know i put both dots at...


The timing chain is not that fine, nor do you care about advance with the chain. A single link on the chain is more like 15 degrees, and you will have no trouble deciding which is the best fit.
TDC is always 0, and never 4 degrees advanced.
It is the ignition that is advanced, not the chain. To advance the breathing you would need to either change the cam, or get a variable chain sprocket. But again, you can not tell 4 degrees when putting a chain on. It changes that much at least when you take the slack out.

Aug 10, 2010 | 1983 Chevrolet Camaro

2 Answers

Cam Crankshaft timing


8 degrees before tdc

Mar 10, 2010 | 1983 Chevrolet Chevy

1 Answer

96 Chevy Silverado Timing


the traditional way of setting your timing would be better, get a loan of a timing light, the sticker under your hood should tell you the spec. usually 10-12 degrees btdc at idle with the timing advance disconnected. the timing advance is a tan wire with a black stripe usually found behind a plastic relay cover on the upper passenger side of the firewall near the distributor. there will be 3 plastic nuts holding the cover. you can mark the harmonic balancer tdc with liquid paper so it is easier 2 see with the light.

Jan 27, 2010 | 1996 Chevrolet K1500

1 Answer

383 Stoker Chevy dies when I put it in gear


That converter should make stalling less of an issue, not more. (stall speed is higher than stock) Make sure that you have the cam degreed in properly, that you have the timing set properly (I'd use 8-12 degrees to begin) and make sure that you have no vacuum leaks.
With a stock converter, you shouldn't use any cam with more than 220 degrees duration...With the higher stall converter, you may get a few more degrees leeway. Also, the carb is too small for the application...should have at least a 750 dbl pumper or larger on there depending largely upon the car weight, gearing and what you have as far as intake and exhaust. (header diameter, length and design)...This should have been all figured out on paper before spending a dime for parts...Biggest mistake I see is people putting "mis-matched" parts together and expecting it to work (everything needs to compliment everything else)

Jul 03, 2009 | 1996 Chevrolet Cavalier

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