Bink

Any ideas, or guesses, of the .550" intake flow of the new 2006 3 valve heads? Has anyone seen data yet?? TIA.

joel

NoOne

They way outflow the current LS6/2 castings, by a large number.

Haven't personally seen them but the info is good. Supposed to bolt with up with little or no mods to a LS2 block, maybe even Ls1/Ls6.

XLR8NSS

iTrader: (4)

I thought a reliable source posted flow in the 370cfm range for the 3 valve heads a while back. Lots of info flying around right now but, I am almost positive that info was from a VERY reliable source.

Juggernaut

iTrader: (1)

Well I have seen some flow sheets for a ported modular(4v) and they were in the 330-340cfm range @.500-.550 on a 3.550" bore. So with a better head design and the larger bore, XLR8NSS's number of 370cfm sounds about right. Just a guess though!
Ryan

Bink

Thanks guys. This is what I was looking for!

Only a year to wait.........I'll sit tight with my LS6 heads until the 3 valves are available.

joel

52172

iTrader: (2)

Will the 3 valve heads bolt right up to a gen 3 block? Will we need to get an ls2 block? If we get an ls2 block and build a 402 will gen 3 cam kits work with a gen 4 block? I am trying to decide whether or not to build a 383 on my ls1 block or build a 402 with a ls2 block, but only if most gen 3 parts are interchangeable otherwise it will be a lot more money to buy everything new.

LS1derfull

Not sure on most of what your asking but i do know cam sensor is moved to front of motor from the rear on LS1. So cams will be different.Knowing GM, 3 valve heads will have same coolant passages and bolt patterns as LS1.

hellbents10

iTrader: (10)

We can only hope they swap easily, could you imagine the numbers then. 10's all motor would not be a big deal and it would take so little work and a not so huge cam. Oh, I can't wait, the possibilities are endless. So who is going to hit 9's n/a with a stock cube ls2 or ls7?

eswolfgang

iTrader: (1)

I remeber in Automotive engineering magazine an article on the "LS7", had some data, imagine the new 5 speed auto, these 3 valve heads going on a 2002 camaro. I hope the new auto will fit.

Bink

The LS2 in the vette has LS6 heads on it. So it would make sense that the LS7 heads will fit a LS1/6. The 2 intake valves function via a common rocker and single pushrod.
Hope..hope...hope...