I was wondering about that. Is there a gear you can put in the trans that will correct it for you? You might only have to change one of the 2. Chart here: http://www.transmissioncenter.net/speedometer_calibration_______va.htm I forget what transmission you have...... 400? JC On Mon, Jul 11, 2011 at 10:54 PM, Ray Buck <rbuck@xxxxxxxxxxxx> wrote: > The speedo is very accurate...for the correct-sized tires. We'll have to > calibrate it with the GPS because of the 28" rear tires. > > r > > > On 7/11/2011 8:27 PM, John Christensen wrote: > > How accurate is the Speedo Ray? The dash one...... > > JC > > On Mon, Jul 11, 2011 at 8:48 PM, Ray Buck <rbuck@xxxxxxxxxxxx> wrote: > >> Hmmm...that's a thought. The speakers/stereo SORTA work, but as far as >> I've been able to determine, only the front ones. I haven't checked any >> further. >> >> I finally got the temp gauge working. Combination of a bad sending unit >> AND a broken wire in the harness. I love multiple problems. >> >> Anyway, if it's a speaker wire, I'm not gonna worry about it. I'm just >> gonna kluge up a horn button and then see if it'll pass emissions/safety >> inspection. >> >> r >> ps...I'm hopin to top yer Top Speed...but it'll be hard, cuz if ya run >> over 140, yer outta the class and ya gotta either pay for another entry or >> go home. I'm really shootin for 135 or so. >> >> >> On 7/11/2011 7:13 PM, Mike Huber wrote: >> >> The wire behind the glove box might b a speaker wire.....Is the >> red-red/black wire been spiced to the plug ???? stereo/speakers work ???? >> >> Mike "MINOMAN" Huber >> 86 Mino El Camino >> 383 Carbed Stroker (for Now) >> "Still drivin' it like I stole it" >> Top Speed 138 mph - 4-05 BBORR >> www.bborr.com >> >> >> >