Why the "LS2" cover
Thread Starter
Teching In
Joined: Jul 2017
Posts: 8
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From: Des Moines, IA
Why the "LS2" cover So I have been pondering for several days now, why does everyone use the LS2 front cover? And on top of that, is there a difference between the LS2 front covers? Like the '05 LS2 front cover with PN: 1260 0325, and the GEN IV LS2 front cover with PN: 1263 3906?
And then, what is the difference between them, and the other GEN IV front covers? Such as this one from an '08 Tahoe engine with a PN:1260 0326
I've tried to compare pictures, but pictures don't tell you measurements. So......that is where I sit.
If anyone could shed some light on this, it would be much appreciated
And then, what is the difference between them, and the other GEN IV front covers? Such as this one from an '08 Tahoe engine with a PN:1260 0326
I've tried to compare pictures, but pictures don't tell you measurements. So......that is where I sit.
If anyone could shed some light on this, it would be much appreciated
The "ls2 cover" is originally used on the ls2 but works with ANY ls wet sump engine. It also comes on every wet sump ls3 engine, quite a few 4.8, 5.3, and 6.0 gen4 engines and a few 6.2l truck engines as well, So its not JUST an ls2 front cover but that was the first appearance of it.
It has the cam sensor in the front to pickup the reluctor mark on the cam gear. it works the same whether you use a 1x cam gear or 4x cam gear.
The complete ls2 front cover comes with cover, crank seal (installed), cover gasket, bolts, cam sensor, cam sensor harness, and harness bolt. its literally a complete assy.
The 12600326 is bare. cover only
The new pn for the complete cover ia 12633906.
They have to be used on all gen4 blocks and the gm lsx block.
The truck front covers utilize the vvt cam phaser on the front of their engines and that cover includes that. So any vvt engine has to have that.
IF you are removing vvt, you swap to the ls2 front cover kit.
Thats it.
It has the cam sensor in the front to pickup the reluctor mark on the cam gear. it works the same whether you use a 1x cam gear or 4x cam gear.
The complete ls2 front cover comes with cover, crank seal (installed), cover gasket, bolts, cam sensor, cam sensor harness, and harness bolt. its literally a complete assy.
The 12600326 is bare. cover only
The new pn for the complete cover ia 12633906.
They have to be used on all gen4 blocks and the gm lsx block.
The truck front covers utilize the vvt cam phaser on the front of their engines and that cover includes that. So any vvt engine has to have that.
IF you are removing vvt, you swap to the ls2 front cover kit.
Thats it.
Thread Starter
Teching In
Joined: Jul 2017
Posts: 8
Likes: 0
From: Des Moines, IA
Alright. Thank you.
If you had a GEN IV front cover that was a DOD engine, pre VVT, then would it work? The sensor location is the same. No VVT components. And would it still clear a 4x 3 bolt cam gear?
If you had a GEN IV front cover that was a DOD engine, pre VVT, then would it work? The sensor location is the same. No VVT components. And would it still clear a 4x 3 bolt cam gear?
A DOD/AFM only engine uses the ls2 front cover. There is no "fitting or not fitting" a 4x cam gear. they will all fit any cam gear.
The vvt engines use a different cover but only because the electrical part of the phaser is in the cover.
The vvt engines use a different cover but only because the electrical part of the phaser is in the cover.
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Also something to keep in mind is some cams are 1 bolt and some are 3 bolt. Not sure what motor you are running, but there isn't a 1 bolt 4x cam gear stock. They may make something aftermarket, but not sure why they would bother.
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