kaddo101

Whats the difference between the pulleys from:
`04 cts-v (ls6) - `06 cts-v (ls2)
`04 cts-v (ls6) - `04 c5 zo6 (ls6)
`04 cts-v (ls6) - `06 c6 (ls2)

Looking for info, weather the pulleys are the same distance from the block for belt alignment. Thanks for any info you can provide.

raven154

iTrader: (14)

They are all the same. Y-body and the V share the same placement.

vmapper

iTrader: (8)

Hmm, im going to have to disagree there, but only partially.
While the Y body and the V (LS6) share the same placement. I dont think this applies for the LS2 guys.
While working on procharging a 2005 LS6, Originally had ordered an ATI Damper 918853, which is for a GTO (ls2/ 6 bolt pattern) due to many of the other brackets used were for a GTO as well and they seemed to fit. The AC belt vs the Serpentine belt did NOT line up when the part arrived.

Y body Corvette or more correctly - LS6 ENGINE serpentine belt runs closer to the block than an LS1 or LS2.

raven154

iTrader: (14)

Then why can you bolt an LS2 maggie on an LS6?

scatillac

iTrader: (12)

Accessory drive spacing on all the above is the same. As Rob had said, the Y-car and V1 share the same pulley spacing, regardless of engine size.

Within GM, there are some part number revisions from the earlier cars, but the water pumps and idler pulleys are interchangable, as are the harmonic balancers (except for the LS7 dry sump balancer, which has the same spacing, but has a different snout to accomodate the dry sump's crank snout, oil pump and front cover). The alternator and P/S pumps are the same for the Vs only, as the mounting brackets are different on the Y cars.

ATI lists the balancer as being the same for an LS6 and an LS2 (10% UD is #917278). Their listing for the GTO is different (10% UD is #917276).

vmapper

iTrader: (8)

True...
There may have been confusion on ATI side, as I was not talking about 10% underdrive pulley but rather 6 bolt blower dampers...
Going through my notes, it was a HUB difference that altered the pulley placements.

All please ignore what i have said All I know is I had bought 1600 dollars worth of pulleys because twice, nothing fit... and that was ATI telling me what would fit or not.

its probably due to me having to use a GTO 8 rib pulley that would not line up with what Scatillic mentioned.
Going by ATI online, both are the same, So I am wrong on this one even suggesting.
Sorry everyone.