Ron, 
  The 56 Mopars had 15 inch wheels and the 57s had 14 inch wheels. With the rear ratios you mentioned, the engine rpm in high gear should be close enough as to make no difference. 
  With these gears, these Mopars would need to be moving at nearly 120 mph at the end of a 1/4 mile to be near the engine rpm red line of about 5000 rpm and wound tight. This mph needs a car capable of 12 second 1/4s. Ain't no way a stock 56/57 Mopar is going to get there that fast.  
  The advantage 57s had was a much lower first gear in a TorqueFlite.  The advantage 56s had was 400 lbs less weight. 
  I'd place my money on a 56 D500 with a TorqueFlite. 
  Dave Homstad  56 Dodge D500/ TorqueFlite  
 
 ----------------------------------------- From: "Ron Swartley" <0000109753cb24f9-dmarc-request@xxxxxxxxxxxxx> To:  Cc:  Sent: Thu, 3 Sep 2015 21:25:42 -0400 Subject: Re: [FWDLK] 57 Custom Royal Lancer D500 badging
   
 Dan,
 
  
 
      The powerflite 2 speed automatic D 500 in 56 has 354-1 or 373-1 rear end gears stock and the 57 D 500 with Toqureflite 3 speed came with a 331- 1 rear end gears. In a quarter mile that makes a big difference. I raced both for more than 20 years.. Powerflite 2 speeds were wound tight at the end of the quarter mile and Toqureflites are not peaked out with stock rears.
 
  
 
     Ron Allyn Swartley
 
 
   
  
 
  
  
   Hi Daniel:
   
  
    
   
  
   I'll have to agree with Gary.  Back in June 1956, I purchased a new D-500 with the Coronet 2-door body.  Had the 315 Hemi and a single carb.  Weight with a full tank of gas was 3685 lbs.  When the '57 D-500's came out, one of the dealer's salesmen challenged me to a race.  From a dead start, we were even for about 5 feet and from then on it was my race!  He also had a 2-door model with the 325 hemi and a sinlge carb.  I went into the Air Force in May of 1957 and the only car that ever beat me until then was a tri-power Pontiac and that was by only a length or two in 0.6 miles.
   
  
    
   
  
   Dan Reitz
   
  
   Bell Canyon, CA
   
  
    
   
  
    
   
  
   
    In a message dated 9/3/2015 2:31:00 P.M. Pacific Daylight Time, glpavlovich@xxxxxxx writes:
    
   
    Daniel, 
     
    I place my "bet" on the lighter chassis; '57 Firesweep, if it is indeed  
    lighter. 
    Gary Pavlovich 
    56 Plymouth w/Poly 318 Stroker 
     
    -----Original Message-----  
    From: Daniel Davids 
    Sent: Wednesday, September 02, 2015 11:22 PM 
    To: L-FORWARDLOOK@xxxxxxxxxxxxx 
    Subject: [FWDLK] 57 Custom Royal Lancer D500 badging 
     
    Fellow Forward Lookers, 
     
    I’m currently doing a bit of overdue tuning and sprucing up the engine  
    compartment of my 1957 CRL. 
    My example is two-tone green with the D500 engine option (325 hemi, block  
    stamped KD500). 
     
    I have a question about the badge on the trunk lid of this year, model, and  
    engine option. 
    Should it not have a red and black “500” emblem in place of the helmeted  
    lancer with spear? 
     
    The brochures for this year Dodge are pretty short on explanation of option  
    packages. 
     
    Cheers from wet and soggy Seattle — a nice change from 10 weeks of straight  
    sunshine (not normal), 
     
    Dan Davids 
     
    P.S. Once we get her running again, we plan to do a runoff of sorts with my  
    57 Firesweep, which as the 325 poly. 
    The numbers for horsepower and torque would say the CRL is quicker, but my  
    son thinks the lighter weight (lower trim) Firesweep will prevail. Bets? 
     
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