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cam swap trouble

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Old 01-24-2012, 09:13 PM
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How would I know if I bent a valve??
Old 01-24-2012, 09:18 PM
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Fruk....did you just tear into this without even a manual, looking at a write up or anything?

Depending on how far the timing was off expect to find this.



Old 01-24-2012, 09:18 PM
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I have a gauge for that
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compression will suck on that cylinder, and it will run like crap

the above case would have been fairly obvious when you tried to start it so i doubt that happend...or if it did youll know it as soon as the first combustion even happens.
Old 01-24-2012, 09:21 PM
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Originally Posted by hernhe5708
How would I know if I bent a valve??
Pull the heads off...or take all the rockers off and pump compressed air into each cylinder, if you have air leaking into the intake or exhaust you have bent valves.
Old 01-24-2012, 09:31 PM
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Yea it's a big deal if you don't go dot to dot. There are quite a few things that could make contact with each other internally.
Old 01-24-2012, 09:52 PM
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Did you not turn over the vehicle by hand a couple times? Take everything apart, line up the dots properly, turn the engine over by hand (take plugs out) and listen to any "abnormal" noises. This is a quick way, but not the most efficient. Also check compression on each cylinder with plugs out.

HERE: http://www.ls1howto.com/index.php?article=23
Old 01-24-2012, 10:01 PM
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I looked at the write up on ls1howto.. but I think the timing migjt be off a tooth or two.. I lined it up as much as possible, but not exactly.. I doubt I bent a valve.. I'm sure you would be able to hear something if I did.. if all went to ****, I'm getting my tax return soon.. hello 6.0....
Old 01-24-2012, 10:12 PM
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If it was off by a tooth or two it should have still started. If it didn't sound like a mess cranking up you should be fine, just double check it before putting it together. Just hope your not thinking the cam dowel is what you should be lining the crank up with.

Watch from about 2 minutes:
LS Cam Swap pt6 (timing gear install, replacing front crank seal & timing cover prep) - YouTube
Old 01-24-2012, 10:21 PM
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Cam sleek is the fourth hole on the sprocket.. the dot is near the edge with the teeth.. it smelt like gas when I cranked it.. that's the only abnormal thing I could find
Old 01-24-2012, 10:41 PM
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Looking at your sig, your not putting in springs or pushrods with this cam?


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