Any GM techs on here 6.0 v8

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Any GM techs on here 6.0 v8 #2981601 11/04/21 11:05 AM 11/04/21 11:05 AM
Joined: Jan 2003 Posts: 11,724 Portage,michigan B B3422W5 OP I Live Here
B3422W5 OP I Live Here B Joined: Jan 2003 Posts: 11,724 Portage,michigan	Have a 2005 Chevy 2500 with 6.0 37,000 miles on it P0300 random missfire… mostly on #5 but see it on others too. Seems to act up mainly under load. Compression test good Swapped plugs, coil, injector…. Currently spraying intake gaskets to see if they are leaking Any ideas on what to check? 69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight 418 BPE factory replacement headed stroker, 565 lift solid cam Best so far, low 10.30’s 1/4 1.41 best 60 foot 6.56 at 104.17

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