mpg with gears? - FirebirdV6.com/CamaroV6.com Message Board

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  • #16
    people forget that our auto trannies are 3 gears + overdrive. Third gear is the same as fourth gear in a manual...1/1 ratio with the crank. Overdrive is a negative ratio. I think the A4 has a taller overdrive gear than the M5
    01 Firebird A4 3.42
    Powerdyne @ 6 PSI
    and other mods
    Visit Project Unleashed for guides and info.

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    • #17
      Originally posted by grayman:
      people forget that our auto trannies are 3 gears + overdrive. Third gear is the same as fourth gear in a manual...1/1 ratio with the crank. Overdrive is a negative ratio. I think the A4 has a taller overdrive gear than the M5
      Finally someone else realizes this too!!!

      I think 4th in the A4 is a .70:1 and 5th in the M5 is .73:1

      - Justin
      <a href=\"http://www.njfboa.org\" target=\"_blank\">New Jersey F-Body Owners Association</a><br />1987 Camaro LT - 400sbc, Aluminum L98\'s w/valve job, Comp XE 274, Q-Junk 750, 3.23 posi, 4.10\'s soon.<br /><br /><a href=\"http://www.njfboa.org/forums/viewforum.php?f=11\" target=\"_blank\">East Coast F-Body Nationals - August 14, 2005</a>

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