Joe-
I presume my 76 has the original rear end, no overdrive
Robson and Langworth say US 72 should have 4.11 ratio with 15.9 mph/1000
RPM in 4th gear and 76 should have 3.89 diff ratio with 16.7 mph/1000 RPM
in 4th gear, smaller difference in mph/RPM than in gear ratios presumably
due to tire change from 5.2"x13 to 155x13
I think mine is at about 3100-3200 RPM at 55mph in 4th gear, this seems to
be just about as expected compared with your numbers
Joe
Joseph R Schneider Web Page http://pubweb.acns.nwu.edu/~jschneid/JRS.HTML
76 Spitfire 1500 FM45587UC Ilinois license plates "SPIT BOY" VTR #11526
*Spit happens*
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