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Backfiring after cam install!!!!!please help!!!!

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Old Mar 17, 2009 | 10:57 AM
  #61  
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Specs are in my sig
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Old Mar 17, 2009 | 03:30 PM
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Update? I just thought of something. Does the custom gring have the firing order switch ground in? That would cause this also.
Last edited by white lightning SS; Mar 17, 2009 at 03:32 PM. Reason: added info
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Old Mar 17, 2009 | 06:56 PM
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No. Everything was fine. I had a bent pushrod caused by a failed lifter. That messed up two valves also. Not good. And to top all that off a cross threaded crank.
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Old Mar 17, 2009 | 06:56 PM
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Found a lq4 with about 25,000 miles on it. Gonna go look at it Sunday. Someone already bought this motor. Tired of messing around.
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Old Mar 17, 2009 | 07:29 PM
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Originally Posted by white lightning SS
Update? I just thought of something. Does the custom gring have the firing order switch ground in? That would cause this also.
LS motors have the 4/7 swap stock. So someone would have to grind it to be swapped back which would make no sense.

Originally Posted by Jtbrewer19
No. Everything was fine. I had a bent pushrod caused by a failed lifter. That messed up two valves also. Not good. And to top all that off a cross threaded crank.
That sucks.
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Old Mar 17, 2009 | 09:29 PM
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Originally Posted by Jtbrewer19
No. Everything was fine. I had a bent pushrod caused by a failed lifter. That messed up two valves also. Not good. And to top all that off a cross threaded crank.
i guess everythings not fine now
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Old Mar 17, 2009 | 09:34 PM
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Retitled thread: Cam swap from HELL! lol
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Old Mar 17, 2009 | 10:34 PM
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Originally Posted by hirdlej
retitled thread: Cam swap from hell! Lol
true that!!!
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Old Mar 18, 2009 | 07:07 AM
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Sorry to hear about the motor damage. I know how you feel. Had a GMPP lifter roller go bad and take out my cam bearings on the 383 I built.
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Old Mar 18, 2009 | 08:00 AM
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Originally Posted by white lightning SS
Sorry to hear about the motor damage. I know how you feel. Had a GMPP lifter roller go bad and take out my cam bearings on the 383 I built.
That's not good.
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