Strictly Street Car Gearing question

Discussion in 'Competition Camaros' started by 77 Pontiaccamar, Dec 20, 2015.

  1. 79RedZ

    79RedZ Veteran Member

    Messages:
    690
    Likes Received:
    41
    Joined:
    Mar 24, 2009
    Location:
    Hamilton,MI
    I ran 4.56 gears with 235/60/15 tire......definitely spun some rpm's cruising around. I was young and didn't mind hearing my 327 sing. Your 427 will have something my 327 didn't have....torque. I would lean toward a 3.73- 4.10 ratio. But that depends on the cam and the torque convertor.
     
  2. 77 Pontiaccamar

    77 Pontiaccamar New Member

    Messages:
    6
    Likes Received:
    0
    Joined:
    Dec 20, 2015
    Location:
    eugene,or
    Hey red

    When you got your car, did it already have 4.56s or did you get them put in? If so, did it give you more use able power to play with? Aluminum heads aren't cheap, so I was hoping to have some fun with the 350 while I save for the rest of my 427 build.
     
  3. Coadster32

    Coadster32 Veteran Member Lifetime Gold Member

    Messages:
    1,640
    Likes Received:
    133
    Joined:
    Oct 2, 2013
    Location:
    Milford,CT
    I had 5:13's in my 79 camaro with a TH400. 1st gear is really short, and you'll be shifting at 15mph...quickly. Yes, I could lay rubber all day, but get smoked by almost everyone cuz I was smoking the crap at the line. Even around town having the car in 3rd gear just to be able to do 50mph. Not as much fun as you think. It was too much to be honest. Couldn't get to 85mph under 6K...(think about that). I currently have 3:90's in the car. I can still smoke them up, but is much more enjoyable to drive. Any more gear than that, and all you do is lose grip anyhow...no matter the horsepower under the hood. Been there...done that. My car is a street car that sees no track time and very little highway at all.
     
  4. Americanmuscle13

    Americanmuscle13 Veteran Member

    Messages:
    1,411
    Likes Received:
    6
    Joined:
    Nov 20, 2003
    Location:
    Conway, AR
    I run 3.90's in my car. That's about all I would want as well. I was able to spin 295 series street tires at will. The only guys I know running 4.88 gears on the street don't have enough motor to make the car fast without all of that torque multiplication.
     
  5. slayer74

    slayer74 Veteran Member

    Messages:
    166
    Likes Received:
    4
    Joined:
    Jan 10, 2014
    Location:
    yonkers new york
    I have 3.90s as well great for the street,nice launch and you can do burnouts and doughnuts all day and am at 3500-4000 at 70-75 with 235/70/15 tires
     
  6. kevprue21

    kevprue21 Member

    Messages:
    39
    Likes Received:
    0
    Joined:
    Mar 16, 2011
    Location:
    North alabama
    I run 4.56 gears with a powerglide and 275/60 /15. I havnt dun the math but I think that would put it around a 4.20 or so I love it.
     
  7. bracketracer-78

    bracketracer-78 Veteran Member

    Messages:
    730
    Likes Received:
    61
    Joined:
    Sep 5, 2003
    Location:
    Stevens, PA USA
    No need to drive stupid on the street. I live 15 minutes from one of the best tracks in the country. If I feel the need for speed I head to the track. That being said, I ran everything from 4:56's to 2:41's. For street use I personally would use a 3:00 to 3:50 gear. I was running 2.0 60 foot times with real street tires and 2:77 gears with a bone stock 350 in my iroc.
     
  8. RS1979

    RS1979 Veteran Member Lifetime Gold Member

    Messages:
    3,726
    Likes Received:
    739
    Joined:
    Jun 18, 2013
    Location:
    Memphis, TN
    I've always been happy with 3.73's. They give me plenty of power out of the hole and don't keep my engine running at excessive RPM.
     
  9. 2nd gen Guy

    2nd gen Guy Veteran Member

    Messages:
    612
    Likes Received:
    5
    Joined:
    Jul 29, 2012
    Location:
    Coon Rapids, Mn
    I had 4.56 , TCI street fighter trans, 350 4 bolt, 10.5/1 Keith black pop ups, dart 2 heads, high duration and lift cam, Holley 750 dbl pumper in a 71Z. Was fun but the rpms were hi and it whined at higher speeds. 1st gear only a few seconds etc . It wasn't as fun to romp around in because a drive train like that needs high rpms and you need to keep your foot in it .
    If that's your idea of a fun car then go build one, I prefer something more streetable

    Your also likely to draw attention from your local law dogs who could decide your playing around is a nuisance and will b looking for you constantly. And if your always out there screwing around you'll become the a** in the fast car
    But hey, to each his own
     
    Last edited: Dec 21, 2015
  10. 79RedZ

    79RedZ Veteran Member

    Messages:
    690
    Likes Received:
    41
    Joined:
    Mar 24, 2009
    Location:
    Hamilton,MI
    This was back when I had a 72 chevelle. I went from 2.73 gears to 4.10, that was certainly a good bang for the buck. I then went to 4.56, it was ok. Probably should have stayed at 4.10's.

    I currently have 4.10's in my 79. It would be interesting to see how my car would feel with 3.73's but I'm not changing anytime soon.

    Personally I would stay in the 3.73-4.10 range with your 427. Your 29" tall tire will eat up some of that gear. And with a well thought out engine combo it will be a lot of fun to drive.
     
    Last edited: Dec 21, 2015

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.