RE: [Chevelle-list] ADVICE

[Dave Studly]

You must have enormous rear tires to run 75MPH at 3500 RPMs with 4.10s.  I have 255-60-15 tires on my 3.55 geared rearend (no OD) and I’m turning close to 3500 to run 75 MPH.  I checked my speed with my GPS.   -Dave     From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Sunday, January 09, 2005 12:22 AM To: Chevelle-list@chevelles.net Subject: Re: [Chevelle-list] ADVICE   In a message dated 1/8/2005 8:21:36 AM Eastern Standard Time, [EMAIL PROTECTED] writes: Nick, Give some serious thought to changing rear gears. A 4.11 is gonna be miserable at any kind of sustanded highway speeds. I've done the tour three times and twice in my 65 Elky with 3.08s. I drove it day in and out at above 3500 RPM. At that RPM you will be making less than fifty MPH. Mike Holleman I disagree.  I was running 4.10's in my 70 for the last 5 years and at 3500 RPM's the car ran 75 MPH.  I never had a problem with the 4.10's on the highway.  The car had a sweet spot between 3500 and 4000 RPMs and it ran great.  It never overheated and got 15 MPG.  My 69 with a 307/PG and 2.73's gets worse gas mileage than the 500 HP big block in the 70.   Tom