Author Topic: 305  (Read 184 times)

swany6mm

  • Active Forum Member
  • *
  • Posts: 45
305
« on: July 05, 2019, 06:10:25 PM »
Hey all. I picked up a 77 Esprit with the Chevy 305 in it. Barn find I guess (as in, it was stored in a barn since 1992). She runs, but am doing some major tune up work. Right now, I'm fighting with finding information on the 305 so I can set the carb idle (2bbl Rochester) - Not sure what RPM/Vacuum - I can find all kinds of information all day long for Pony blocks, but the only 305 info I can find is all related to Chevy cars'n'trucks. Can anyone confirm the settings for a '77 Camaro will match up for the 'Bird, or were they different?

b_hill_86

  • Active Forum Member
  • *
  • Posts: 271
Re: 305
« Reply #1 on: July 05, 2019, 07:01:37 PM »
I’m PRETTY sure I have it in a manual at home but I’m 450-some mile from there for the next ten days. If someone doesn’t find it by then I’ll see if I can.
-Brian-

1977 Trans Am 400 4 speed

oldskool

  • Oracle Forum Member
  • *
  • Posts: 2234
Re: 305
« Reply #2 on: July 05, 2019, 08:33:50 PM »
I'm not a Chevy guy. But why would the same 305 engine be any different in a Camaro than it would be in a Bird ? 

Aus78Formula

  • Oracle Forum Member
  • *
  • Posts: 9217
Re: 305
« Reply #3 on: July 05, 2019, 10:00:58 PM »
Wouldn't think so, the engines like that are generally complete and running before they are assigned to a body, unless requiring special brackets for non-Chev use.
I'll check my 77 Service manual shortly.

swany6mm

  • Active Forum Member
  • *
  • Posts: 45
Re: 305
« Reply #4 on: July 05, 2019, 10:51:11 PM »
I would think everything would be the same, thinking all the bits'n'pieces under the hood would all be the same - But, not being a Chevy guy either, I don't know. Was hoping someone had experience with a 305 that was in a 'Bird ;) and could confirm before I just "ass"umed

Re: 305
« Reply #4 on: July 05, 2019, 10:51:11 PM »

Aus78Formula

  • Oracle Forum Member
  • *
  • Posts: 9217
Re: 305
« Reply #5 on: July 05, 2019, 11:19:16 PM »
Assume the emissions sticker is no longer there? Possibly the AU code, for 305 Auto and Manual, 2BB used across GM line.

Ok the 1977 Service manual info is scattered over several pages.....but this should cover it.

https://i.ebayimg.com/images/g/4RIAAOxyuCJRfpXq/s-l1600.jpg
« Last Edit: July 05, 2019, 11:22:46 PM by Aus78Formula »

swany6mm

  • Active Forum Member
  • *
  • Posts: 45
Re: 305
« Reply #6 on: July 06, 2019, 09:21:27 PM »
Yeah, lots of the decals are gone. Aus78, you're brilliant! Thank you man. That is EXACTLY what I was looking for. As of now, I'm idling too fast and timing isn't right. And she's purring lol. Can't wait to see how she runs once it's dialed in right.

Again, thank you. VERY much appreciated :)

Aus78Formula

  • Oracle Forum Member
  • *
  • Posts: 9217
Re: 305
« Reply #7 on: July 07, 2019, 01:00:18 AM »
All good, I took the lazy way out of getting all the info in one spot!

swany6mm

  • Active Forum Member
  • *
  • Posts: 45
Re: 305
« Reply #8 on: July 08, 2019, 10:36:07 PM »
Quick note for you Aus. After getting her idle set and timed right (thanks again!), she's purrrring. Runs very very smooth. No hiccups or anything. Not bad for a car that sat since 1992 in a garage (new interior (kept the seats) - Didn't do anything with the engine other than rebuild the carb and put new valve seals on the heads.


Aus78Formula

  • Oracle Forum Member
  • *
  • Posts: 9217
Re: 305
« Reply #9 on: July 09, 2019, 07:03:40 AM »
Perfect, love a good result from minimal work. How it should be!

Re: 305
« Reply #9 on: July 09, 2019, 07:03:40 AM »
You can help support TAC!