mowpow

Building up an LS2 402 and having issues with an ATI damper and the front timing cover. Here's what it looks like installed.



Everything was fine until I went to install my crank bolt. Apparently I didn't have the ATI hub all the way back when I installed it so the crank bolt pushed it back. Then, the engine froze and I couldn't turn it anymore. After troubleshooting it, I figured out it is the AC pulley from the ATI kit pressed up against the front timing cover and was jammed.

I took everything off and here are some pics of the various parts of the ATI kit. Do I have the wrong hub or something or is my timing cover wrong?
Thanks for any help you all can provide.

AC pulley from ATI kit:


How the pulley presses against the timing cover:


Pic of the timing cover:


Thanks,
Mowpow

Realcanuk

There should be directions with it. Is it possible you have the AC pulley on backwards ?

Jimbo1367

what realcanuck said.

mowpow

Yea mine looks like the kit you show in the picture. I thought maybe I did have the AC pulley on there backwards but when it goes the other way (no gap between the pulleys), the screws don't reach the AC pulley from the front so the AC pulley doesn't end up getting secured. The instructions don't indicate which way the AC pulley should go.

mowpow

Here's the sticker from the ATI box, can someone confirm this is the right part for an LS2 going in a 98 Vette.



Thanks
Mowpow

Realcanuk

Call ATI.. Mine is different number but its an overdrive pulley so I don't know.

lizeec

iTrader: (57)

You definitely have an LS2 timing cover, not sure on the ATI part # but doesn't it say clear as day it is for a LS1? Call ATI to confirm your part #

79LS1FOX

iTrader: (11)

you have the wrong damper, you need the one for an LS2 Corvette the LS1 LS7 ones are different.

maroonls1z

So you can't use an ls1 f-body one on a ls2/3/7?

ls1 1990 VN

Vette & F Body have a different offset

maroonls1z

then how do people use ATI in swaps?

6togo

iTrader: (13)

That part# is listed for a cts-v ls2-ls6-lsa so it should work with that cover!

ls1 1990 VN

They like me know what their engine is based from, be it Vette or Fbody & GTO, then source the ATI catalogue & find the right part number.

Russ K

iTrader: (1)

The ATI 917278 is the correct part #. Same one I have on my LS3 stroker. Looks like you have an LS7 timing cover, that sticks out further to make room for the 2 stage oil pump.

Russ Kemp