Someone wanted to know!!!!!! HELP!!########
Thread Starter
Melting Slicks
Joined: Sep 2003
Posts: 2,775
Likes: 0
From: 1,000,000,001 Posts
Someone wanted to know!!!!!! HELP!!########
Someone on here wanted to know what a auto vette RPM's were and what gears they ran at 75 MPH.... Well here is some pic's if you please to help out..... I took soemat 80 mph and 70 At 80 I am running about 3000rpm,,, and this is with the stock 3.07 gears,,, does everyone agree with this.......
If you look at my pics the first 2 are ones i just took
If you look at my pics the first 2 are ones i just took
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 34
From: The Top of Utah
Re: Someone wanted to know!!!!!! HELP!!######## (1990CORVETTE)
The one that wanted to know posted here: http://forums.corvetteforum.com/zerothread?id=752489
In your answer to that initial post, you neglected to reveal your gear ratio. Your 3000 rpms at 80 mph is in 3rd? If that is supposed to be O.D., there is something wrong with your speedo or you have different gears than you think.
RACE ON!!!
In your answer to that initial post, you neglected to reveal your gear ratio. Your 3000 rpms at 80 mph is in 3rd? If that is supposed to be O.D., there is something wrong with your speedo or you have different gears than you think.
RACE ON!!!
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 34
From: The Top of Utah
Re: Someone wanted to know!!!!!! HELP!!######## (Unriced)
My '84 with the stock sized P255/50/R16 BFG Drag Radials, turns 2500 rpms in O.D. at 85 mph. I have the factory 3.07:1 gears.
RACE ON!!!
RACE ON!!!
Thread Starter
Melting Slicks
Joined: Sep 2003
Posts: 2,775
Likes: 0
From: 1,000,000,001 Posts
Re: Someone wanted to know!!!!!! HELP!!######## (CFI-EFI)
The one that wanted to know posted here: http://forums.corvetteforum.com/zerothread?id=752489
In your answer to that initial post, you neglected to reveal your gear ratio. Your 3000 rpms at 80 mph is in 3rd? If that is supposed to be O.D., there is something wrong with your speedo or you have different gears than you think.
RACE ON!!!
In your answer to that initial post, you neglected to reveal your gear ratio. Your 3000 rpms at 80 mph is in 3rd? If that is supposed to be O.D., there is something wrong with your speedo or you have different gears than you think.
RACE ON!!!
Please advise???????? What the F$$$ :flag
Burning Brakes
Joined: Jan 2001
Posts: 1,169
Likes: 0
From: Manhattan
Re: Someone wanted to know!!!!!! HELP!!######## (1990CORVETTE)
I have found it to be the case that '90 tachs are the most inaccurate of all years. Mine reads way high, up to 2000+rpm off. At watkins glen it was useless, staying pegged most of the time.
I've checked it against the computer using DataMaster data logging software to get the 2000rpm discrepency. Some say it's teh tach filter that goes bad, but i've read the filter is not available.
http://www.f-body.org/gears has an rpm/mph calculator that might be helpfull
I've checked it against the computer using DataMaster data logging software to get the 2000rpm discrepency. Some say it's teh tach filter that goes bad, but i've read the filter is not available.
http://www.f-body.org/gears has an rpm/mph calculator that might be helpfull
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