joel 
LS7 3 Valve heads ???
TECH Enthusiast
Joined: Nov 2001
Posts: 585
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From: Green Oak, MI
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.
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.
Adkoonerstrator
iTrader: (4)
Joined: Nov 2001
Posts: 21,420
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From: Deep in the seedy underworld of Koonerville
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.
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
Ryan
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.
TECH Addict
Joined: Dec 2001
Posts: 2,298
Likes: 2
From: new england
Originally Posted by 52172
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.
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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?
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