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Lloyd-TX

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  1. Lloyd-TX

    Average MPG by actual Sierra owners?

    Lloyd-TX replied to GMTruckGuy74's post in a topic in GMC Trucks
    2008 Sierra Denali 2WD, 6.2L, 6L80E, 3.42 gears. On my typical greater Houston area commute I average 13.5 MPG so far. Only 3400 miles on my truck, so it may get a touch better when fully broken in.
  2. Lloyd-TX

    Short lived GM Engines

    Lloyd-TX replied to Drew Dowdell's post in a topic in Powertrain
    Being a die-hard Pontiac enthusiast (see sig), here are some short-lived but truly amazing Pontiac performance engines . . . 1968 1/2 400 Ram Air II 1969-1970 400 Ram Air IV 1971-1972 455HO 1973-1974 455SD 1977-1979 400 W72 (TA 6.6)