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Teds89IROC · 04-21-2006, 11:30 AM

Thanks for the site, but is a 275/40/17 tire 27" tall? and being that the 3.42 is out of a 4th gen, how do I know the tooth drive gear in my 89 is 17? Unless I go to the dealer and buy a speedo gear for my 89 to accomodate a 3.45 rear. Some stock cars came with the 3.45 9 bolt rear and it would be pretty damn close to 3.42.

~Ted

04-21-2006, 11:30 AM	#4
Teds89IROC Join Date: Sep 2004 Location: Haledon, NJ Posts: 5,162 iTrader: (0)	Thanks for the site, but is a 275/40/17 tire 27" tall? and being that the 3.42 is out of a 4th gen, how do I know the tooth drive gear in my 89 is 17? Unless I go to the dealer and buy a speedo gear for my 89 to accomodate a 3.45 rear. Some stock cars came with the 3.45 9 bolt rear and it would be pretty damn close to 3.42. ~Ted __________________ 1989 IROC-Z 355 LT1 T56 Swapped 2016 Chevy Colorado LT 3.6 v6 2008 Jeep Grand Cherokee Laredo 4.7L RIP 12/29/2016 1998 Honda CBR 600F3 2003 Yamaha FX140