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#40433 01/03/2004 5:15 PM | Joined: Oct 2002 Posts: 60 Wrench Fetcher | | Wrench Fetcher Joined: Oct 2002 Posts: 60 | would like to stay with a GMC motor the 1955 1/2 ton has a 6 cly I think it is a 248 ( the chart of vin #s says 2 nd serries 55 with 248 my vin number 102-cy-1587) what other GMC motors will bolt up to my 1955 hydramatic what years ? which is the best for every day use and will go todays speeds.
thanks for any info. Bill
Bill 1951 3/4 ton 5 window pick up
1955 GMC 1/2 ton longbed automatic
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#40434 01/03/2004 5:22 PM | Joined: May 2001 Posts: 7,438 Extreme Gabster | | Extreme Gabster Joined: May 2001 Posts: 7,438 | The 248 won't limit your highway speed, your rear-end gear ratio will. I know that the '54 hydramatic has the same low gears as the manual tranny trucks. I don't know about '55. Anyway, the 248 should be sufficient if you use a higher gear ratio. | | |
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