05 colorado SBE 6.0/C480/4l80e 9.78@143 foot brake 3850lbs
#421
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I get the lean condition caused the issue, but there's a reason the "old school" guys ran big ring gaps with pump gas turbo setups. Just curious but did you check the gaps on the other pistons? How tight were they? Most of the time the ring pinches first and the piston ***** at an angle, then you get the melty looking crown from the added heat of the seized piston being shoved up and down the bore.
#425
#428
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Have you or has anyone tested the F-Body bulk heads for that same type of restriction? Do all Colorado's have this issue or do you think it was just yours? Just curious, I'm in the middle east right now and can't check this myself or I would. Thanks for any info.
#435
but yes stock rad, no temp problems, i havent driven in stop and go OCMD traffic yet either, but i dont even use the high speed part of the fan
eh it took a while to get pistons, and im busy working on my house, and a damn converter bolt stripped out, i would have gotten more done lol
i will just be replacing the feed for now to see if thats it
#436
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Sweet. what wastegate are you running on this deal? singe ebay? I'm going to do a 78/75 on my 5.3 since since the rad-hoe seems to be quite a beast. Side-note that should be the trucks name, just decided.
#439
I use that same fuel pump,and bench tested it, but dont recall this one having a bypass internally, could the pump be bad causing your issue. http://www.vepetersen.com/ fuel pump techinfoJeff@vepetersen.com 800 537 6212 from the factory. hope this helps: , awesome builds i like them all!
Last edited by getboost; 12-25-2015 at 05:21 PM. Reason: typo