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Re: 656 v.s. 706
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Posted by wolfy on November 30, 2003 at 18:32:51 from (24.197.40.200):
In Reply to: 656 v.s. 706 posted by John on November 30, 2003 at 14:46:37:
The 656 gas has the 263 cu in but only revs to 1800 rpm; tests at 63.85 hp (Nebraska test). At only 1800 rpm & 263 cubes, it is quite economical for rather powerful gaser. The early 706 gas had the 263 revved up to 2300 rpm.About 73.82 hp. The 706 had much heavier rear end & axle carriers,etc; 16 speeds vs. 10 in the 656. Nebraska test on 706G said 10.45 hp hr/gal which is actually amazing. A 3020 Diesel only tested at 10.61 hp hr/gal! The later 706 gas & the 756 gas had the 291 cu in & were a bit thirstier. Probably at least 1500 lbs difference in weight. 6500ish vs 8200ish.
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