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Username Post: Rear end ratio        (Topic#356034)
Posts: 47

Reg: 01-04-09
04-16-19 04:42 AM - Post#2764314    

What ratio is recommended for a 1955 Chevy car with a 6 cylinder engine and power glide transmission for highway driving (cruising at 65 MPH). My car now has a 3.55 and it seems to low.


"13th Year" Gold Supporting Member
Posts: 1245
Loc: Pasadena, Texas
Reg: 04-29-04
04-17-19 12:03 PM - Post#2764401    
    In response to widall2

From what I have found, 1955, 6, PG,
Axle ratio is listed as 3:56

VC56S 2 door Sedan, 40 Years

[image]https://www.chevytalk.org/fusionbb/fbbavatars/a v-3564-1354211547.jpg[/image]

Mel Foye 
*VIP* Original Founding Member Group
Posts: 4965
Mel Foye
Reg: 09-29-00
04-17-19 05:45 PM - Post#2764429    
    In response to widall2

For many folks your ratio is the sweet spot. I live in an area where 65mph will get you being passed by cars on both sides. My 57 6 cyl really sounds like it is wound up at 70-75 so I stay in the slow lanes at 70-75. If I was going to keep it with the 6 I would go with a 3:08 and a 350 trans. Better in town and better on freeway.

Super Senior Member
Posts: 5264
Loc: Coopersburg, PA
Reg: 01-25-01
04-29-19 05:13 PM - Post#2765331    
    In response to widall2

You might to go with a '57 3.36 rear. If your main concern is highway driving, maybe go with a 3.08, but then your acceleration won't be as good.

'56 210 Townsman wagon 6cyl/3spd OD | '58 Impala Sierra Gold 348

Posts: 55
Reg: 06-02-13
05-14-19 09:05 AM - Post#2766370    
    In response to Bad56Sedan

  • Bad56Sedan Said:
From what I have found, 1955, 6, PG,
Axle ratio is listed as 3:56

Where did you find that listing....Got a link?


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