? about #53 12 valve blocks

? about #53 12 valve blocks

08-25-2005, 05:29 AM

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mechanic

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Join Date: Jan 2002 Location: Harrah Oklahoma (10 miles east of OKC) Posts: 127

? about #53 12 valve blocks

I just bought a 98 12 valve with a #53 block. It has been worked hard at least part of the 115,000 miles. (It had a fifth wheel hutch in the bed and OE overloads and add on air bags.(also a gear vendors o/d) The diff. is noisy and has a little "negative preload" on the pinion brgs., so I concluded that it has most likely worked hard.) My question is, has anyone seen a 12 valve #53 block crack? Just wondering.
I bought the truck knowing it had the potential to crack, but the whole truck is so slick that I took the risk. I have my own shop and am a pretty fair welder if it does crack or I might use the old cold weld method using taper plugs.
Any feed back would be appreciated. Thanks.

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98 Club Cab SLT--Fully loaded; leather;12 valve; 2 WD; auto with 3.54 posi-trac; KDP pinned; TST #6 plate; Banks boost & pyro & cat back 3.5" exhaust; Gear vendors O/D; rear air bag assist; Mechanic, David Lapham Sr. 53 yrs. mechanical exp. Shop owner for 28 yrs.

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