wavrdr

iTrader: (1)

Hey guys, if both setups were similiarly priced, which would you go with and why?

I like the LS7 due to the lighter valves, and the possibly better flowing intake mani...

Alan

sprayjunkie

IF they were similarly priced, LS7 all the way...but show me them for anywhere near the price of the L92 stuff, please!

BlackHawk T/A

iTrader: (3)

Hmm doesn't the LS7 top end cost a pretty penny? Or would you actually spend more after working the L92 stuff?

wavrdr

iTrader: (1)

I've sourced a low mile set(2k miles)on CorvetteForum with Patriot Gold springs....

It seems that the intake and other neccessities are similiarly priced.

Again, I'm comparing the LS7 pricng I can get with that of CNC'ed L92's...

Thanks guys!

Alan

03 BUSA

iTrader: (25)

In that case I would go LS7. However, I would need to know why he is selling those heads already. There isn't anything better out yet that I know of.

Stang's Bane

iTrader: (22)

x2 for the LS7 IF priced the same. If money were a issue then the decision would be much harder.

FWIW if you plan on running a serious cam, plan on replacing the intake valves on the LS7's. AND if you plan on spinning it up pretty high you would probably need TI valves, and those run ~$1K.

wavrdr

iTrader: (1)

He is going with the ETP LS7's....


It seems the consensus is go with the LS7's.

Thanks for the thoughts guys...Now all I need to do is see how much shipping is from Canada!

NemeSS

iTrader: (127)

from what i have concluded from all the l92 info is that they flow pretty good as is and the only thing i would do to them would be a valve job and polish the runners and chambers, i wouldnt trust them with a aggressive cam and jesel or agrresive rockers,/ and valve springs
since they are pretty thin in some places, what im saying is that not much material such be removed from the runners to get big flow numbers,
LS7 would be the place to start with a hi flo head if its a serious build
<--0.02$

Big-DEN

Nemesis.

L92 do have great numbers on paper.

The problem that some of us where talking about, is yeah, the numbers are huge.

But results on 408-427's is less than desired. Alot of us are looking at RWTQ's thru a stick to get idea of efficiency. Ported LS6/Tfs/afr-fast90 is moving 480-530rwtq thru 408-427 cubic inch.

The L92 is noticeably down, IE barely any 427 cracking 500rwtq with them.

Some theorize its not a head problem but incorrect cam design.. Someone will figure it out

DONAIMIAN

iTrader: (18)

Go with the LS7, you can always pull them off later and port them more if you want. Plus the LS7 heads feature lightweight valves that you dont get with the L92 stuff.

Cop Car

iTrader: (14)

if you have a 4.125 bore there is no reason to get anything but the LS7 heads

See5

iTrader: (53)

I am not sure about your assumptions. We just started up a LS7 with ported L92s and a cam and it seems very strong. The exhaust side flowed better than LS7 heads so I can't imagine it is going to be down from a like motor with LS7 heads. No dyno yet.

03 BUSA

iTrader: (25)

Please post your results when you get them, I am very interested as I have yet to see this combo's numbers. Thanks for the time.

wavrdr

iTrader: (1)

I'm going to go with the LS7's.

Not that the L92's are not good or anything, but stock for stock I think both the heads and intake from the LS7 are better pieces...I do believe I could have the LS7's ported, but may just clean up the exhaust side...

Thanks for thoughts you guys!

Alan

Spinmonster

2700-2800 with the manifold.

VortechC5

iTrader: (6)

Is this in a C5? If so does the LS7 exhaust port location cause any problem with header fitment?

See5

iTrader: (53)

If there is a difference, it goes unnoticed.