I recenly purchaces a 1985 K5 Chevy Blazer. It has a 5.0L (305) V8 in it. It was originally shipped with a TH700r4 tranny but the previous owner replaced it with a rebuilt TH350. I really wish I had the 700 now though cause I'm sure I'd be getting better gas mileage with it. Anyway I'm on a quest for better gas mileage. I only get 10mpg regardless of setting (in town or highway). The truck starts and runs fine. However Last night I installed a new Distributor Cap & Rotor, Coil, Plug Wires, Air Filter, Fuel Filter & PVC valve. Now the truck seems to be a bit more "Peppy" however its decided it likes to hesitate under acceleration. I need some advice on what I should try next. My thoughts so far is its either a Timing or Carb issue. I'm sure the carb probably needs some work but do you think the timing could cause this as well? Also could someone tell me the timing specs on this Year/Engine I can't find the sticker under the hood. Would appreciate all advice & suggestions on how to improve the fuel economy and performace (hesitation problem). I'm starting to think I should have left well enough alone as the hesitation started after my "tune-up". argh.. If you'd like to see my new toy here's a link to some photo's and info: http://www.jeremias.net/photoalbum/?path=The Family/Jasons K5 Blazer Remove the NOSPAM from the e-mail address to send me an e-mail.