HIGH RPM STALL - Team Camaro Tech
Troubleshooting Diagnosing problems done here.

 
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post #1 of 10 (permalink) Old May 19th, 02, 04:40 PM Thread Starter
 
Join Date: Apr 2001
Location: Dalton,Pa. usa
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I HAVE A CHEVY 359 BORED .030 WITH 461 HEADS IT IDLES AND REVS UP TO ABOUT 3000 RPMS THEN STARTS STALLING OT AND BLOWING FUEL BACK THROUGH THE CARB.. PLEASE HELP IF YOU CAN
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post #2 of 10 (permalink) Old May 19th, 02, 05:37 PM
 
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Check your exhaust--sounds like you have a burnt out muffler inside.
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post #3 of 10 (permalink) Old May 19th, 02, 09:34 PM
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Owww, my freakin' ears!!!

Sorry, caps is considered yelling.

How about a little more elaboration on the engine/exhaust? What does the car normally idle at? Will it idle normally most of the time? How much idle vacuum? Timing settings? How many miles on the engine? How does it run when it isn't spitting back thru the carb?
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post #4 of 10 (permalink) Old May 20th, 02, 04:58 AM
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how did you set your timing gears and chain. a guy brought me a car once that did the same ran great to 3000 then fell flat on its face he said it was fine then he changed the chain an gears to a multiple key way set and had advanced it 2 degrees. upon checking it out i discovered it was at 4 putting it back to 0 fixed it

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post #5 of 10 (permalink) Old May 20th, 02, 05:00 AM
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were did you set your chain and timing gears i was brought a car that died at 3000 it turned out he replced his chain an gears and thought he advanced it 2 but was 4 i put it back to 0 no probs
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post #6 of 10 (permalink) Old May 20th, 02, 10:36 AM
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Almost sounds like a wiped cam lobe.

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post #7 of 10 (permalink) Old May 21st, 02, 07:20 AM
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Join Date: May 2001
Location: Lapeer, Michigan
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Not sure on this but probably something to check: is the distributor an HEI and maybe it is cutting out at 3000 plus RMP if it is an old unrefirbished coil.......
Mybe it is not getting the 12 volts that it is suppost to get.....
I always start on the small things before I start to tear apart the motor.
Although the above suggestions are very good possibilities too......
good luck
Nate
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post #8 of 10 (permalink) Old May 21st, 02, 07:08 PM Thread Starter
 
Join Date: Apr 2001
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<BLOCKQUOTE>quote:</font><HR>Originally posted by travis:
Owww, my freakin' ears!!!

Sorry, caps is considered yelling.

How about a little more elaboration on the engine/exhaust? What does the car normally idle at? Will it idle normally most of the time? How much idle vacuum? Timing settings? How many miles on the engine? How does it run when it isn't spitting back thru the carb?
<HR></BLOCKQUOTE>

idles at 1100.idles normal no misses..didnt check idle vacum.timing is normally 30 degrees advancedruns fine up until 3000rpms..
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post #9 of 10 (permalink) Old May 22nd, 02, 01:03 PM
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Are you running some kind of huge cam to have to idle at 1100 rpms? And are you really running 30 degrees initial timing? If you really have that much initial timing, I am sure it is backfiring pretty severly thru the carb...by the time it would hit full advance you would be up in the mid 50's range. How about some details on your setup...cam, carb, compression, exhaust system, etc.
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post #10 of 10 (permalink) Old May 22nd, 02, 06:01 PM Thread Starter
 
Join Date: Apr 2001
Location: Dalton,Pa. usa
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<BLOCKQUOTE>quote:</font><HR>Originally posted by travis:
Are you running some kind of huge cam to have to idle at 1100 rpms? And are you really running 30 degrees initial timing? If you really have that much initial timing, I am sure it is backfiring pretty severly thru the carb...by the time it would hit full advance you would be up in the mid 50's range. How about some details on your setup...cam, carb, compression, exhaust system, etc.<HR></BLOCKQUOTE>

the lift is only .480.. the idle is set that high for racing the distributor is pinned at full advance so it stays at 30 degrees for racing...cam is a .480 both intake and exhaust.. 234 duration carb is a holley 4412 500cfm 2 barrel... exhaust is hedman headers 1 5/8 primary's through 3 inch pipe into a set of flowmaster single chamber mufflers

[This message has been edited by dirttrackracer (edited 05-23-2002).]
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