Recent content by tjoyce81

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    2007 5.3 year compatibility

    AND, for the record, I've installed MANY Melling parts into trucks and cars, for many years - but this is my first true failure of a Melling part. If that can be avoided in the future, it will be my last.
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    2007 5.3 year compatibility

    The entire timing set - chain, tensioner, cam and crank sprocket - is made by Melling. They were ALL changed at the same time. IMO It's highly unlikely the tensioner would break where it did, without the a broken chain catching it and snapping it off. Of course I could be wrong - and I...
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    2007 5.3 year compatibility

    I have to say, I've been thinking about your timing chain. I hope you have many more miles with yours, but from what I see with mine - being the same manufacturer - I would seriously consider changing it. Thinking back on my chain replacement, I remember thinking how the GM chain seemed more...
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    2007 5.3 year compatibility

    Measured all cylinders 3 times today. 1 has .0008 taper, 3 have .0004 taper, 2 have .0001 taper, and 2 have -.0001 taper. Having 2 being .0001 out of spec is ok with me - could have been a hair off with the measurement. However, all cylinders are at least .004 too big (over worn). They measure...
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    2007 5.3 year compatibility

    The cylinders look perfect. Cross hatch is equally visible on all of them. No ridge, or vertical scuff marks. Rings are good, spin freely in piston. Piston skirt coating is rubbed off, but that is supposed to happen. BUT, I never go by eye. I'll measure next week, then send it to machine shop...
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    2007 5.3 year compatibility

    Well, here is the damage, and my opinion on what happened. Chain tensioner bracket broke, causing the chain to break. Cam stopped but the crank didn't. Just one exhaust valve bent, and that valves' pushrod and rocker arm have slight grind marks (where the rocker and pushrod meet). However, no...
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    2007 5.3 year compatibility

    My engine does not have VVT, it has AFM - 2 very different systems.
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    2007 5.3 year compatibility

    I can say with a high degree of certainty, that IF i did NOT change the timing chain stuff - I would still be driving my Tahoe today - with a fully functioning AFM system and 359000 miles on it.
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    2007 5.3 year compatibility

    LOL, I misspoke about the reluctor wheel - I meant the cam sprocket (thought of it as a reluctor wheel - you can feel it through the cam sensor hole. No, crank did not break. My oil pressure issue went like this. First, I my dash gauge went to zero, and all kinds of warnings went off - but the...
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    2007 5.3 year compatibility

    Have not pulled heads yet. But if you look close, the cam stopped turning just after tdc on #1 - so, it will be interesting to see what maybe (or may not be) bent. I replaced the OE tensioner and chain just because I was in there - cus I replaced the oil pump chasing an oil pressure issue...
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    2007 5.3 year compatibility

    First, THANKYOU ALL for the wealth of information I gained on this thread. I am not familiar with the LS Engine - or all the computer stuff, but an engine is an engine. Having rebuilt several Northstar Cadillac engines, as well as racing stuff - I'll figure it out eventually. Well, here is...
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    2007 5.3 year compatibility

    Thanks for that info. I rebuilt the transmission, installed 'the beast' sunshell, along with a corvette servo, upgraded frictions, upgraded pistons (blue seals), new thrust bearings, sonnax reinforced input drum, upgraded boost valve, a transgo kit (orange box) - and probably a few other things...
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    2007 5.3 year compatibility

    Years ago I blocked off the oil pressure relief in the oil pan, because the spring in it was failing. That increased the oil pressure and gave a more consistant pressure. The afm worked up until this issue. So, pretty sure this - along with 3000 oil and filter changes - contributed to the...
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    2007 5.3 year compatibility

    Thanks again! I kind of hope I cant rebuild my 5.3 now.. LOL
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    2007 5.3 year compatibility

    Wow, thanks a lot for this info! By saying "existing bcm", you mean the engine computer - right? Just so I'm straight - my existing (5.3 lmg) engine computer can be used with an 08+ 6.0 motor? If so, does my existing computer have to also be tuned for the different injectors used in the 6.0?
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