kratos2250

I am considering switching blocks because my ls1 has alot of miles on it. I was wondering if all my stuff from my LS1 would fit on the LS2 block (heads, intake, headers, acessories). Until I can upgrade this stuff. Are the blocks the same with just different bores strokes etc... ? or different all around. I was looking at texas-speed and they have the block, and the rotating assembly fo bout $2800. I was planning on keeping the same cam too. Thanks

98_Formula

iTrader: (15)

may want to consider a forged 347, i think the price is fairly close... i cant answer ur question directly though. ur intake and heads should fit... not sure on the rest

kratos2250

Where the hell can you buy one of these at? I've looked everywhere.

HSV-GTS-300

Yes all that stuff fits. You need LS2 front timing cover and LS2 valley cover tho, also LS2 lifter trays.

Mostly the same, just a bigger bore 4.00. Stroke is the same. Cam sensor and knock sensors have moved.

LS1 cams will work in LS2.....but you need a 2005 LS2 cam gear to bolt on the front of the cam.

kratos2250

I just can't find where to buy ls2 stuff at. (cam gear, ls2 timing cover, valley cover? lifter trays).

DownWithOPP123

Sdpc.

merriman44

iTrader: (4)

Yep go to SDPC. Oh and check for wear on the old cam before you install it. You might just want a new one.

99blancoSS

iTrader: (115)

Why not just go with a 408 and swap it all over direct? 75lbs difference in the block you will never feel in the car. The 402 block is more money and then you have to get the cover kit. The 408 is more durable as well

pm me if someone wants help with making the right choices

BlwnLs1GTO

iTrader: (12)

Lifter Trays? Are you absolutely sure?
I'm swaping the LS1 to LS2 right now and I'm ready to drop the engine in. I used my 2004 LS1 lifter trays as well as lifters. Someone please confirm this either way.

Thanks, -D

HSV-GTS-300

You might be OK because yours was a late LS1, there was some issue about earlier LS1's and their lifter trays not fitting into LS2's. I think it was to do with the notches in the sides of the old LS1 trays not lining up with the LS2 shapes in the lifter valley.
That said $20 for a new set of LS2 trays is not bad.

LS2

HSV-GTS-300

You'll need :
A set of 2004+ head bolts
11562524 11mm Head Bolts (TTY) 10 req per head
12558840 8mm Head Bolts (TTY) 5 req per head

A set of head gaskets
12589227 Head Gasket 0.051" 4.02" Max Bore (single)

2005 LS2 Cam Gear (sprocket)
12576407

LS2 Valley Cover
12570471

LS2 Front Timing Cover
12600325

A set of LS2 lifter guides (trays)
12595365 x 4

Harmonic Balancer Bolt
12557840

Cam sensor Extension harness
Knock sensor Extension harness

BlwnLs1GTO

iTrader: (12)

Yep, you are correct! Thank You!

In case anyone is wondering or searching. My 2004 LS1 (GTO) has the newer LS2 style Lifter Tray. Only difference is a slightly larger pushrod hole and the notch for the block.