Originally Posted by Tru2Chevy (Post 689744)

As far as I know Cam-Only means in addition to the "bolt on" rules (which basically say you can't swap any engine parts that touch oil), it allows for the cam swap and related valvetrain upgrades (new springs / locks / etc).

- Justin

Originally Posted by 01blackz28 (Post 689758)

Bottom end must be bone stock. No porting, milling heads etc. As Tru2Chevy pointed out updated valve springs are allowed. Some people on the top 10 list have run such a large cam that flycutting the pistons were needed. But for my cam choice flycutting is not needed. The current record is 10.219@132.29 through a m6 that was set back in march of 2006. Back in December I tripped the beams in my car and trapped 131 at something like 14 seconds lol The day my motor blew up I ran 10.35@127 so the potential is there. FWIW my old motor probably had 30 dyno pulls and 60 passes on it spinning to 7200 rpms.

Originally Posted by 1QWIKBIRD (Post 698570)

So you could blueprint the pooh out of the stock short block and the components, you just can't swap them out for lighter/stronger parts? What about overbore? Just a hone and re-ring or is some small amount of overbore permitted?

Color looks good, even though I don't car too much for blue, that shade looks good against the black top. Nice.

Chris

Originally Posted by 1984camaroz28 (Post 698577)

IT has to be a stock UNTOUCHED longblock. besides cam, springs and such

Originally Posted by 1QWIKBIRD (Post 698936)

So fly-cutting pistons would be a NO NO?

I'm asking because I remember reading a pretty heated thread over on LS1Tech about this and there was confusion over what a "stock" shortblock should be defined as. I am not really sure if an agreed upon definition was ever put forth. Some guys seemed to think untouched means untouched, period. While others seemed to think that it allowed for blueprinting and similar type tricks, but utilizing all the original factory parts and the spec'd dimensions.