Gears and top speeds...

CRASH7772

Member

Apr 27, 2003

401

1

16

NH

May 3, 2006

#21

• May 3, 2006

• #21

The most I ever ran for rpms was 4500 in 5th with 2.73's and 215/60/15's. I figured it was like 145-150 on radar but if you do the math it should have been 160+ or something. The math doesn't account for drag, load, resistance,etc......This was a slight down grade with a at the time mostly stock 87GT.

 

8

89white50

Member

Nov 16, 2004

440

1

18

central MA

May 3, 2006

#22

• May 3, 2006

• #22

as far i remember with 273's:
1st= 45
2nd=85
3rd=115-120
4th....145ish (disaster waiting to happen. , been there a few times without any problems though.

 

TRWXXA

Member

Jan 18, 2003

190

1

19

RIGHT BEHIND YOU!!!... Made you look.

May 3, 2006

#23

• May 3, 2006

• #23

88SaleenClone said:

I got to thinking that if I did get my speedo fixed, since it's a 170 mph Saleen speedo, would the needle only go up to 85? My car was originally an lx and had an 85 mph cluster I'm assuming. Btw, how hard would it be to get the speedo working?

Click to expand...

It will indicate correctly and go past 85 mph, as long as you have the correct speedo gears for your rear end/tire size combination.

Not sure how hard it is to get a speedo fixed. I know there are speedometer shops out there, but I don't know of anyone who's had a speedo repaired.

 

J

jwcma

Founding Member

Aug 5, 2002

70

0

6

Bay Area, CA

May 3, 2006

#24

• May 3, 2006

• #24

I use GPS to gauge my speedo accuracy. With 275/17 Nitto drag radials, 3.55 gears, black speedo gear, my speedo was extremely accurate, pretty dead on at 70 mph. My other two cars, even though they are more modern and have stock tires and gears, have less accurate speedos according to my GPS.