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BUSY BOLTERS Are you one?  The Shop Area
continues to pull in the most views on the Stovebolt. In August alone there were over 22,000 views in those 13 forums.
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| | | Forums66 Topics126,777 Posts1,039,282 Members48,100 | | Most Online2,175
Jul 21st, 2025 | | | | Joined: Mar 2015 Posts: 57 'Bolter | | 'Bolter Joined: Mar 2015 Posts: 57 | a few years back i replased the org motor in my 51 3100 with a 250 in line 6 t5 speed trans and camaro 323 rearend im starting to feel the need for a little more im thinking 5.3 and auto trans any thoughts or input bad or good would be helpfull | | | | | Joined: Jun 2008 Posts: 1,638 'Bolter | | 'Bolter Joined: Jun 2008 Posts: 1,638 | That 250 has got a lot of pep and should be able to push your ‘51 along nicely. Are you now wanting to race your truck?? Seems like a lot of work to make the swap, but it’s your truck.
My 2 cents worth.
Chuck
1950 Chevy 1/2 ton (all original)
1951 Chevy 1/2 ton (future streetrod)
1941 Chevy coupe
1938 Chevy coupe streetrod
| | | | | Joined: Jan 2001 Posts: 5,320 'Bolter | | 'Bolter Joined: Jan 2001 Posts: 5,320 | Drop the rear end ratio a little would help a lot, and lot easier.
See the USA in your vintage Chevrolet! My Blog | | | | | Joined: Sep 2011 Posts: 1,363 'Bolter | | 'Bolter Joined: Sep 2011 Posts: 1,363 | Or drop a lot since you have OD! I'd say 3.73 at least, since we have grades to pull in my part of the world I'd got 4.10:1
BC
1960 Chevy C10 driver 261 T5 4.10 dana 44 power loc
1949 GMC 250 project in waiting
1960 C60 pasture art
Retired GM dealer tech. 1980 - 2022
| | | | | Joined: Mar 2015 Posts: 57 'Bolter | | 'Bolter Joined: Mar 2015 Posts: 57 | thank you one and all the more input i get usuly the better i decide | | | | | Joined: Mar 2010 Posts: 10,059 Renaissance Man | | Renaissance Man Joined: Mar 2010 Posts: 10,059 | Drop the rear end ratio a little would help a lot, and lot easier. Doesn't he want to raise the "ratio" ? (3.73 to 1 is a higher "ratio" than 3.23 to 1). I know what you mean, I just want to make sure everyone else does. I have heard of 3.73 to 1 rear end as being described as lower "gear", and a 3.23 to 1 rear end as a higher "gear", and I am fine with that. Carl
1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission
| | | | | Joined: Jan 2001 Posts: 5,320 'Bolter | | 'Bolter Joined: Jan 2001 Posts: 5,320 | Most every one I have ever talked to says lower ratio, as in this case. I know that means lower speed ratio, not numerically as you point out  .
See the USA in your vintage Chevrolet! My Blog | | | | | Joined: Oct 2017 Posts: 214 'Bolter | | 'Bolter Joined: Oct 2017 Posts: 214 | When I saw the title I thought maybe someone was trying the Cummins Repower  .
1953 Canadian GMC 9314 w/ (factory) Chevy 235
| | | | | Joined: Feb 2019 Posts: 2 Moderated | | Moderated Joined: Feb 2019 Posts: 2 | I am planning to use the Cummins Repower on my 50 6400 | | |
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