LS9 cam in a turbo 5.3?
#1
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How well would this cam work? Keep in mind this is not going to be a track car or a dyno queen. Im most likely going to have a 70 or 76mm front mount, 241s w/ slight portwork, truck manifold setup. Im looking for fast spool up and something I dont need to rev super high. The one concern I have is the -24.5* of overlap, but LPE is now recommending this over their GT7 cam for turbo/SC apps. Thoughts?
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That cam is made for a square port head...That alone is enough reason not to run it. The cathedral port 241's will want a completely different cam profile..not to mention the displacement difference.
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#13
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LS6, LS7, LS9 would all be better than a stock 5.3L cam. None of them would be near as good as one custom speced for your exact rig. The cam is a fairly important part of the overall equation. Why not have Pat G or someone you trust spec one that's optimum? The 220/220 .581 114 or 115lsa that shows up in the for sale section quite often would be one that would work well and be cheap if you're on a tight budget.
#14
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too much ex duration and not enough intake duration and too much -overlap
depending on your turbo, and with cathedral style heads, your typical turbo cam would have either equal or a little more intake duration as exhaust with a lsa of about 116-118 but if you have a large turbo for you setup it does not hurt to have a little more exhaust duration then intake and lower lsa
the ls9 was designed for supercharged app with square port heads that flow much better, definitely not the best choice
depending on your turbo, and with cathedral style heads, your typical turbo cam would have either equal or a little more intake duration as exhaust with a lsa of about 116-118 but if you have a large turbo for you setup it does not hurt to have a little more exhaust duration then intake and lower lsa
the ls9 was designed for supercharged app with square port heads that flow much better, definitely not the best choice
#20
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Whilst I have never tried it, I'd find that hard to believe.
Almost any mild cam will always work very very well on a turbo build. That's why virtually ever OEM turbo cam is like that.
People have made very good power on even a totally stock camshaft.
Almost any mild cam will always work very very well on a turbo build. That's why virtually ever OEM turbo cam is like that.
People have made very good power on even a totally stock camshaft.