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| View Poll Results: best low budget option to lower mpg and still tow a car trailer, '79 dually 454 th400 | |||
| leave it as is, drive slow, pay the price for gas, and enjoy 1979 stock |
   
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3 | 23.08% |
| swap rear diff gears from 4.56 to 4.10 |
  
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2 | 15.38% |
| swap rear diff gears from 4.56 to 3.73 |
  
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1 | 7.69% |
| swap trans or get gear vendors and it'll pay off in several years |
  
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3 | 23.08% |
| other |
  
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4 | 30.77% |
| Multiple Choice Poll. Voters: 13. You may not vote on this poll | |||
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01-10-2022, 04:04 AM
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#19 |
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Registered User
Join Date: Dec 2018
Location: Coronado CA and Beulah CO
Posts: 24
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Re: C30 dually rear diff gearing options help please
I guess the 235's sound good.
For those with a relatively stock 454, If I didn't mind paying for the gas, and didn't mind the louder noise, how many RPM's is comfortable for the engine to do all day on the highway. I just don't want to send the engine to an early grave. I'd like to take good care of it, so how many RPM's could I do all day on the highway without doing any damage, and with the engine being happy about it all? thanks
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onlylovematters... ...and, you know, trucks 
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| 4.56, 454, c30, dually, mpg |
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