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03-23-2007
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#1 |
 Join Date: Jul 2004
Location: Sudbury, Ontario. Canada
Posts: 1,538
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410 gears speedometer difference?
Hi everyone
My brains should be up to this but I can't seem to figure it out. What's the percentage difference on the speedo if I have 4.10 gears instead of stock? Just got her registered - she's all mine! Got a break in the weather too - first cruise this evening  BUT don't know what speed I'm doing and don't want my first trip to end up with a run in with the boys in blue. Dave
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1991 #1516 Black/Black davidmkelly.com "Speed is often confused with insight." - Johan Cruijff |
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03-23-2007
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#2 |
 
Join Date: Oct 2004
Location: Woods Cross, UT
Posts: 389
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Re: 410 gears speedometer difference?
Sounds like you need to get some speedo correction gears or the BOX...SOON!!! Hope you have a good radar detector too! Do you really think knowing your speed will keep you "goin slow"? It won't! Let 'er rip! This website will help you with your speed calculation...http://pw1.netcom.com/~sgalaba/mph.htm
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Uly Past OWNER 90 ZR-1 #0120 Red/Saddle UT Plate: EZR1DER |
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03-23-2007
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#3 | |
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Join Date: Jul 2004
Location: Sudbury, Ontario. Canada
Posts: 1,538
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Re: 410 gears speedometer difference?
Quote:
 I tried the link but it didn't seem to give any results when I clicked - maybe I'm just missing it. I figure it must be around -15% with the 4.10s It won't kep me going slow, but it might at least stop me from doing it right under their noses  p.s. radar detectors are illegal in Ontario. Seems kind of dumb to ban a device that warns you to keep your speed down.
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1991 #1516 Black/Black davidmkelly.com "Speed is often confused with insight." - Johan Cruijff |
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03-23-2007
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#4 |
Join Date: May 2005
Location: Leesburg, VA
Posts: 2,713
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Re: 410 gears speedometer difference?
Doing the math, at an indicated 60mph on the speedo, you'd actually be going 50.5 mph. To actually go 60mph, you'd want to see 71mph on the speedo.
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Bob Saveland Former owner of #2517 [IMG]http://a.random-image.net/aurora40/vette.jpg[/img] |
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03-23-2007
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#5 |
Join Date: Sep 2006
Location: lone pine and mammoth lakes
Posts: 1,407
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Re: 410 gears speedometer difference?
or with stk rear tires 315/35/17 2000rpm =72mph
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03-24-2007
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#6 |
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Join Date: Jul 2004
Location: Sudbury, Ontario. Canada
Posts: 1,538
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Re: 410 gears speedometer difference?
So I wasn't too far out with 15%. Thanks guys, you really are the best.
Just got back from my first cruise, still very much in 'familiarisation mode' but damn, I'm definitely grinning!!! Looks like the weather is set to be good all weekend too! Whooohoooo!
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1991 #1516 Black/Black davidmkelly.com "Speed is often confused with insight." - Johan Cruijff |
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