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Re: My LT1 rebuild

Subject: Re: My LT1 rebuild
by bam on 2011/11/24 15:06:07

Quote:

rklessdriver wrote:
The LTX's do have the pin holes in the cam galley plugs.... they are to spray additional oil on to the upper cam and waterpump drive gears.

That lobe damage looks like a rod hit it honestly.... but without inspecting everything I couldn't say for sure.

When a lifter goes bad and damages a cam - typically it eats a track in the whole lobe....

When a lobe is damaged from lifter bounce it's always on the closing side flank of the lobe.

With that kind damage on the cam lobes, the lifters are suspect big time.... I would not reuse lifters from that engine in anything.... no matter how good they seemed.
Will

"When a lobe is damaged from lifter bounce it's always on the closing side flank of the lobe." Not to hijack this thread but I have a question about this. The cam rotates clockwise when you stand in front of the engine and look at the cam, right? Then is this kind of wear on the right side of the lobes or the left? My hot cam that I took out of my recent LT1 cam swap (only 500 mi on the cam before the motor went bad) has a strange "dent" in each lobe. It is on the right side of each lobe when you look at the front of the cam. Is this the "lifter bounce" you speak of? Is a cam reusable when it shows this kind of wear? I really appreciate your feed back on this as I am wondering if I need to replace my almost new hot cam because of this or if it is ok to reuse. I know I need new lifters. Here are some pix of the wear. Thanks for letting me post this in your thread.

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