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Old 08-26-2008, 11:39 PM
dlang14 dlang14 is offline
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Join Date: Feb 2003
Location: Morgan Hill, CA
Cobra Make, Engine: SPF 2293, Roush 427R-228
Posts: 298
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Quote:
Originally Posted by Great Asp View Post
Your crusing rpms seem spot on for your arrangement. I will have the same, but I would rather have like 2200 rpms for the highway at 70 mph

Really, If they would have had the 3:73 for the rear, I would have ordered the .64 5th. Go to the Second Strike Calculator and play around with the rear gears and the 5th speed and you will see what I mean. With 3:73's, and a .64 5th you get a nice cruising speed/rpm ratio.

http://www.secondstrike.com/Technical/GearCalc.asp

Thanks for posting!

E
Second Strike calculator says 3000 rpms would be 81MPH. I'm lucky if its 75. Not sure why the delta but it definetely isnt right. Actually just now playing with the calculator the numbers look a whole lot closer if I plug in 3.73 or 3.77. Neither makes sense as I've got build 2293 which should be the BTR center with 3.46.....Now I'm curious. When I get some free time (never right now with 5 month old twins) I'll jack it up and try to figure out what the deal is
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