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AnswerYou don't say what ignition if points could be gap setting.

If HEI, pull dist cap off pull rotor, turn it over and see if there is a a black burn mark on bottom if there is the rotor is bad.

Also if carburated the carb could be going bad and backfire can be caused by lean burn , ( not enough fuel)

could be sticky valve, or wrong valve clearance, broken valve spring

You might also lubricate the centrifugal advance counter weight pins, use a small amount of white lubricate on the pins, make sure that the pins are not worn, check for sticking.

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โˆ™ 2009-12-13 08:50:19
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Q: Why does a Chevy 350 backfire at high RPM?
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Why does your 350 backfire at high RPM?

backfiring is a sympton of a lean condition. look for vacuum leaks and fuel delivery problems.


What is max rpm on Chevy 350?

6000 rpm


Idle RPM for 350 Chevy engine?

800 rpms.


Why does my 1979 350 Chevy engine backfire through the carburetor above 3000 rpm?

The valve timing is offAnswersounds like a possible worn camshaft lobe. a fairly common problem on late 70's Chevy small blocks


What is normal idle for 1995 Chevy TBI 350 automatic?

750 RPM


What RPM timing be set at on 350 Chevy 1974 engine?

Rpm needs to be set at 800 - 900 .. that is factory setting.


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I belive it is 4 degrees advanced at 500 rpm


What is the idle RPM for a standard trans 69 Chevy 350?

an idle rpm for a 350 stadard trans. is about 500 rpms. an auto is about 750 rpms. this is if the eng. has a stock cam. if not it may vary


What is the proper idle speed for a 1971 350 Chevy small block?

Standard transmision, 750 rpm. Automatic transmission, 600 rpm in drive.


What is the torque specifications for Chevy 350 engine?

The Chevy 350 is a V8 5.7 L engines which yields the horsepower of 200 @ 4000 RPM and torque is 310 ft/lbs @ 2400 RPM. It has designed by General Motors and started manufactured by 1968 until now with enhancing its power time to time. To know more about Chevy 350 and its complete description you can go through www.hiperformer.com/chevy350/overview.html. I refer this page for gaining information for my Chevy 350


What is the idle on a 1992 Chevy truck with a 350?

1500 at first until it kicks down to 850 rpm


How many horses in a Chevy 350 at 5000 rpm in ac10 truck?

Need to know the year of the engine and if it is stock.


How fast is the 350 engine on a 1985 Chevy?

The practical limit is 6500 rpm. Above that and you risk parts failure.


How much torque does a stock 350 from a 1994 Chevy 4x4 have?

A stock 350 cubic inch engine in a 1994 Chevy 4 x 4 will put out 310 foot pounds of torque. It does this at 2400 rpm.


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How much horsepower does a 1972 Chevy truck with a 350 engine have?

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What is the rpm redline for a 93' 350?

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At idle how much oil pressure should a Chevy 350 produce?

You should have about 10 PSI per 1000 RPM; a touch higher at low RPM and a tough lower at high RPM. If you car idles at around 800 RPM, 10-15 PSI is good. The 250 - 275 value mentioned by another poster would likely blow oil past all of your seals if it were possible ot get oil preasure that high.


What is the idle setting for 1973 Chevy 350?

For 1973, the idle speed for an automatic transmission is 600 rpm when choked, and 450 when warm. For a manual transmission, 900 rpm when choked, 450 when warm.


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It is best to start at 8 degrees at 600 rpm for auto and 6 degrees at 800 rpm for manual. The total timing should be around 33 degrees.


How much horse power does a 1993 4x4 Z71 Chevy Silverado 5.7 liter V8 350 have?

160 hp @ 4400 rpm


How much horsepower does a stock Chevy 350 with a performer rpm air gap intake and a holly 670 street avenger carb have?

275


How many times Chevy 350 engine fire a min?

Any V8 engine, operating at 1,000 RPM, fires 4,000 times in a minute. If operating at 2,000 RPM, it fires 8,000 times in a minute.


How can you get the timing advance for a 1980 Chevy V8 5.7L 350?

4 BEFORE (ADVANCED) TDC A 800 RPM WITH THE VACUME ADVANCE DISCONNECTED AND PLUGGED.


What is the RPM at idle on a 2003 Chevy Trailblazer?

700 RPM