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Message: <blockquote data-quote="ehrenwuzz" data-source="post: 1432461" data-attributes="member: 574113">Ok I have 1976 chevy 400 small block bore 30 over, standard pistons(because its 2 bolt main),with 96 model Vortec heads(202v),Comp.cam 280/480 ,dual line 650 Holley carb on a Welan or Eldebrock intake+MSD ign.+ S.Headers,eletric fans(only water pump and altenator pulleys) In - 86 Trans-am" 700R4 trany with 273 gear switching to 373 gear asap.....Just wanted to have a guess at what Im pushing now and how much differance will the 373 gear will make.... right now I feel like I'm in nascar with 273 gear in overdrive <img src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f642.png" class="smilie smilie--emoji" loading="lazy" width="64" height="64" alt=":)" title="Smile    :)"  data-smilie="1"data-shortname=":)" />P.s Less than 10,000 miles on both motor and trany $ fresh.</blockquote>