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BossHogg69 · 07-01-2009, 12:16 AM

my '69 has 3.73's and when I was rolling the 454/TH400 combo it ran good at 60-65 on the highway. 70 got a little annoying. 3.42's would probably be a good compromise, but I like the way 3.73's come outta the hole!

07-01-2009, 12:16 AM	#22
BossHogg69 motor exploder Join Date: Mar 2009 Location: Pittsburgh, PA Posts: 2,346	Re: What gear to use with the 402/th400?? my '69 has 3.73's and when I was rolling the 454/TH400 combo it ran good at 60-65 on the highway. 70 got a little annoying. 3.42's would probably be a good compromise, but I like the way 3.73's come outta the hole! __________________ Adam 1969 Chevy CST/10 stepside, DART Big M/TREMEC Magnum Extreme/3.73's w/Detroit Truetrac 1965 Chevy Bel Air Wagon (daily driver), 327/TH350,10 bolt w/3.08's 1961 Chevy Bel Air Sport Coupe, ZZ454/M21/9" rear w/3.50's & Detroit Truetrac 2005 GMC 1500 ccsb 2wd, 6.0L/4L65e/3.73 G80 2006 GMC 2500HD ccsb 4x4, DMax LBZ/Allison 6spd/4.56's w/Detroit TrueTrac Use the SEARCH function on this forum - it is your friend!!