wannafbody

iTrader: (2)

End up being phased out of production? Is it a packaging issue with inline valves demanding less space? A canted valve LS would probably kick ***.

LLLosingit

iTrader: (4)

I have no idea but my guess would be cost versus reward.
You have to have deep pockets to run them. Edelbrock LS-R Pro-Port Cylinder Head ($2,700 a pair Bare) Or RFD LS-R (8k a pair complete) and you still need the rocker setup.

wannafbody

iTrader: (2)

I didn't realize anyone made a LS style canted valve head. I know that the original small block Ford Twisted Wedge heads from Trick Flow was rotated slightly.

As for production engines, I was thinking of old school Chrysler and Ford Cleveland engines.

LLLosingit

iTrader: (4)

And BBC,
Then you can toss in splayed valve heads that are similar to canted.

TTur1996

Dart has a new canted valve reverse port head out that is totally bad ***. The Edelbrock R head is bad *** also. Mast has the Mozes canted valve head too. The problem with the inline Ls head is they dont make a spring with enough pressure that will fit in there for over 700 lift. If you do, you really have to watch your rpm. This is why you see the cam grinders staying in the mid 600 range and raise the duration to get what is needed so the valves dont float. We have a 730 lift cam in ours and I can tell you it didn't like 8000rpm. Floated the valves a little. So now we red line at 7600 rpm and it stays happy. You can lighten the valve train with light lifters and titanium valves to help with this, but we have a nitrous motor and have 904 lifters and run the Ferrea super alloy valves.

Che70velle

iTrader: (6)

The factory GM LT stuff has a slight cant to the valves. And there are plenty of aftermarket canted valve heads out there for LS and LT engines.