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250 6cyl.

  1. Electrical
    Wassup y’all, I have a 250 77 Concours with a Rochester electric choke 1bbl carb I’m working on. As I was adjusting the fast idle screw, I noticed the pigtail connector came off (my mistake). I bought a pack of 14 Gauge female connectors to fix the problem; however, now my “GEN, OIL, and...
  2. 4th Generation Nova's
    Wassup y’all (new to Novas, carbs, and the site itself, big thank you for letting me in) I’m having problems with my 77 Nova concours, long story short it has a Rochester Qjet 1bbl electric choke and just recently I replaced the fast idle screw since every time I hit the throttle it cuts off. I...
  3. Drivetrain & Performance
    hey guys so I am considering putting a new offy intake on my 250 but I am debating between either dual single barrel's or I know a lot of people do a Holley 390. I am wondering what the pros and cons are for performance, mpg, reliability and anything else you can think of. my uncle who has been...
  4. Parts for Chevy II/Nova/Acadian
    Currently looking for the approximate values of the following two items: 1) 250 cid, 6-cylinder engine. 19,5xx original miles. 100% complete, and original as far as I know (?). Pulled from the car and bolted to the stand, that's it (yes, it could use a cleaning). Turns over...
  5. 1st & 2nd Generation Chevy II/Nova's
    My 1963 Nova was shooting out oil of the dipstick and PCV breathers, & drove it like this for 2 years until I did a compression test and was between 70-100 on all the cylinders. Rebuild Time. This all started 2 years ago so if you want to see part one that led up to this check out here...
  6. Drivetrain & Performance
    I am looking for help to show me how to hook up the linkage on the Offenhauser intake with 2 one barrel Rochester carbs on an inline 250 6 cylinder engine in 1965 Chevy pickup truck or similar vehicle - should be the same - would like to know how the setup is between the firewall and the carbs
  7. Drivetrain & Performance
    Ok so I just bought a 77 and within the last week just about every seal and gasket has failed on the 250 Inline 6 and between all the tearing everything down there seems to be one extra vacuum hose. I've looked everywhere I can think of online and under the hood and still nothing
  8. Member Introductions
    Hey everyone my name is mike. I just recently bought a 77 4door project car. It has 74k original miles on the 250 inline 6 and beat all to hell but everything is there and fixable. Hope to make this a fun project for me and my fiancé.
  9. Drivetrain & Performance
    A little while ago, I picked up a 1973 Nova with a straight six and a three on the tree. At the moment, it runs REALLY rich. Does anyone know how to tune the factory 1bbl carbs or have any helpful diagrams of them? I'd rather not swap carbs until I at least try to get this one functioning half...