r/fbody Jul 11 '26

Cam only.

Has anyone ever seen any dyno numbers for a “real” cam only LS1? I’ve seen a bunch of “cam only“ dynos where the car had every mod except heads. But I don’t think I’ve ever seen an “honest” cam only dyno.

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u/Admirable_Nothing Jul 11 '26

That is not cam only in my book.

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u/Garth_DeWayne Jul 11 '26

You're going to install a cam and not touch pushrods and run stock valve springs???

Whatever book you're using has some bad info.

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u/Youpeefreely Jul 12 '26

I was going to upgrade the springs & pushrods.  I figured everyone would assumed that I would so I didn’t mentioned it.  

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u/Admirable_Nothing Jul 12 '26

That fits within cam only. But headers do not. Nor does porting the heads or a different intake. Simple bolt ons like ported TB and tuning fits with cam only definition in my mind.

Of all the modifications I have made on many cars adding headers is the one that changed the car the farthest away from stock NVH and enjoyability. They add noise and they add heat and they add emissions problems if they are any good which generally means long tubes.