2000 Tran Zam

iTrader: (2)

I might be getting an ls2 gto and ive got katech stage 2 heads 11.1 cr and tr 224 cam and spec 3 clutch.

this was all in my ls1 before, will it all fit in the gto now?

I wanna keep my warranty, so i was gonna mill the heads down so you cant see anything but stock casting, and get a quiet cam and just keep stock manifolds.

any info is appreciated.

thanks.

StreetnStrip

iTrader: (7)

the heads will work but the cam wont

HeapaShifter

iTrader: (2)

The heads and the cam will both work.

The LS1 and LS2 have the cam sensor in different locations, but the LS1 cams will work in a LS2. A LS2 cam won't work in a LS1 though.

2000 Tran Zam

iTrader: (2)

ok good, so if I got a cheater cam and threw it in an ls2 motor, it should have no issues then correct?

also, if I ended up with an ls2, would it be benificial to throw in my 5.7 katech ls1 heads on there, or is it not worth it because its a bigger motor?

I dont know how it would be affected.

NemeSS

iTrader: (127)

ls2 come with ls6 heads alredy
if urs flow more,then put ur heads
ls7 cam bolts in ls2 ,very similiar to the cam u want but cheaper
i believe its 210/230 .590/.590@.050

2000 Tran Zam

iTrader: (2)

ya, the heads ive got right now are flowing around 280 cfm at .600 lift I believe.

can you use stock valve springs with an ls7 cam, or would I need 918's or something else?

Bring the Noise

I would suggest something along the lines of the 918's as the stock springs are only good for around .525 or .550 lif

The 918's are listed on comp's site for .600 so a cam that run's at .590 would be okay.

The Kaytech stage 3's are only 280 @ .600?
hmmm, you might want to double check that cause the stage 2's from most shops are close to 300cfm @ .600. And Kaytech's suppose to be one of the better shops.

Somebody09

WHY do LS1/LS6 heads work on an LS2 block??? I know they do, but what about the different size bore!? Am I missing something?

2000 Tran Zam

iTrader: (2)

Maybe you missed it, but I did say they are stage 2 heads, not 3.

Would it benifit me to put these heads on an ls2 motor or no?

Bring the Noise

Well the stock 243's flow around 240 cfm so 280 would be an improvement. And you could always send the 243's off to get cnc'd up to a stage 2 or stage 3. Just incase you want more later

The biggest thing with the 05/06 LS2's is the tune... gonna need one especially if you pop in a head-n-cam kit.

Me, I just put on a set of Patriot Stage 2's and the flow chart show'd 301 at .600.

Somebody09
The reason the LS1 heads fit the LS2 block is simple.
You're talking about all of about .100 in bore from a stock LS1 (3.90in bore) to a stock LS2 (4.00in bore). The main thing is with the larger bore a different head gasket is required.
Its the same as putting on a set of LS1 or LS6 heads on a resleeved LS1 block that has a 4.060 or 4.100 bore. All of the bolt holes, valeys, water jacket connections, still line up.

Now you can port the combustion chambers out for the larger bore to use up the extra .100in of space. Maybe unshroud the vavles a little, or put in a larger set of valves or both.

MY99TAWS6

iTrader: (3)

Does this mean lq9 heads would also bolt up? What would the compression with flat tops be approx with lq9 heads?
They are 72 or 76 cc combustion chambers forget exactly.
I am thinking buy some lq9 heads for current ls1 then swap them into the
ls2 later. So the ls1 cams are 100% compatible..and also is the fast 90 compatible ls1 or ls2?

Somebody09

Sweet, thanks. I always just figured that the block and head bores HAD to match, but I guess that's not always the case