Ken_B Posted March 17, 2009 Share Posted March 17, 2009 What RPMS does a 4 speed d/r EA81 run at: 60 MPH: 65 MPH: 70 MPH: 75 MPH: What is the redline of and EA81? What RPMS does a 5 speed s/r EA82 run at: 60 MPH: 65 MPH: 70 MPH: 75 MPH: What is the redline of and EA82? If you had a choice which car would you take on a trip from Western Washington to Southeastern Wyoming, assuming they both are in about the same average good condition and both are carbed and both have an equal amout of "stuff" in them, which would you take? Quote Link to comment Share on other sites More sharing options...
Caramanos2000 Posted March 17, 2009 Share Posted March 17, 2009 At around 60mph my RPMs are around 3200 or somewhere around that area I would take the 5spd Quote Link to comment Share on other sites More sharing options...
hatchsub Posted March 17, 2009 Share Posted March 17, 2009 What no 5 speed ea81 rpms? I got a 2wd and it will cruise at 3000rpms at 75. Quote Link to comment Share on other sites More sharing options...
ihscout54 Posted March 17, 2009 Share Posted March 17, 2009 They both have the same final drive ratios, and similar high gear ratios. I bet you are also running close to the same size tires on both cars. The '83 and up 4spd D/R has a slightly taller 4th than the 5 spds 5th gear. So this may not really be a factor in your decision. The EA82 might be a little more comfortable and have a little more room for your stuff. Quote Link to comment Share on other sites More sharing options...
ivantruckman Posted March 17, 2009 Share Posted March 17, 2009 5 Quote Link to comment Share on other sites More sharing options...
s'ko Posted March 17, 2009 Share Posted March 17, 2009 Assuming 185-70-13 tire size 83-89 4spd d/r 3.9 final drive 3rd gear high 60 mph=4045 70 mph=4720 80 mph=5393 90 mph=6068 4th gear low 60 mph=3812 70 mph=4448 80 mph=5083 90 mph=5718 4th gear high 60 mph=2608 70 mph=3042 80 mph=3477 90 mph=3911 Assuming 185-70-13 tire size, 85-89 5 spd d/r 3/9 final drive 3rd gear high 60 mph=4632 70 mph= 5404 4th gear low 60 mph=5247 4th gear high 60 mph=3296 70 mph=3845 80 mph=4345 90 mph=4944 5th gear low 60 mph=4211 70 mph=4912 80 mph=5614 5th gear high 60 mph=2645 70 mph=3086 80 mph=3526 90 mph=3967 send me a PM w/your email and I can send you the excel sheet that calculates RPM w/the gears. BW Quote Link to comment Share on other sites More sharing options...
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