Zzeal Posted November 30, 2009 Share Posted November 30, 2009 With my stock LS2 crank pulley just about kissin' my 73's steering rack, I had to find a smaller od damper. I'm normally a bit leery with some of Summit's "Trick Flow" stuff, but this underdrive (25%) damper is a very nice piece, from Australia I learned, and for $180!! You can have about two of them for the price of one ATI damper. It's Summit's TFS-18004, fits Chevy LS1's and LS2 GTO's. Along with it ya gotta buy a new damper bolt, $5 (16mm X 2.0) and if you need to replace the crank seal be aware that GM considers them precious, they retail at $27 Steve Quote Link to comment Share on other sites More sharing options...
ColtGT4g63 Posted December 1, 2009 Share Posted December 1, 2009 I've considered getting a new dampener as well. Mines gotta be at least 1mm away from touching the rack also. Let us know how it works out for ya! Quote Link to comment Share on other sites More sharing options...
Blown77Z Posted December 1, 2009 Share Posted December 1, 2009 Would be nice to see some before/after DYNO comparisons ! Quote Link to comment Share on other sites More sharing options...
1 tuff z Posted December 1, 2009 Share Posted December 1, 2009 i have an underdrive pulley on mine as i felt it too close for comfort to the steering rack. i'll try to remember to post a pic. 1 Quote Link to comment Share on other sites More sharing options...
EvilC Posted December 1, 2009 Share Posted December 1, 2009 I too did install one over the winter and installed a F.A.S.T. intake. Hope to have new numbers in the Spring and will post pics of the setup. Like David said, my oem pulley sat close to the steering rack. 1 Quote Link to comment Share on other sites More sharing options...
Savage42 Posted December 2, 2009 Share Posted December 2, 2009 I have one on my LS6 and have about 1.5" of clearance. Here's a pic of the engine mounted on the crossmember, but rack not installed. You can see that there is plenty of room. Quote Link to comment Share on other sites More sharing options...
zed240au Posted December 6, 2009 Share Posted December 6, 2009 i fitted a 10% underdrive pulley to mine fits fine and clears crossmemeber well mick Quote Link to comment Share on other sites More sharing options...
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