86BIRD-MY FIRST CAR

any on know where i can get these from for my 2.8 V6 that says 85 MPH (boring). do i also need a computer chip for this too?

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86 firebird 2.8
K&N replacement filter
modified air box
MSD ignitor
Hooker cat back
GNX style wheels

FiReBReTHa

silly boy, if you put a sticker with the same size increments, youd notice, 1. it wouldnt work therefore you have to buy the whole unit that has 140 and if you get bored, up it to 180, or 120 and up to 145 with stickers.......

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91 FireBird 305 V-8
Edelbrock Catback, Custom Alarm. Fourth Gen Console. i have six cupholders. all for starbucks!
Go|)Created The Earth, And Then Turned Up The Bass.
Here's My Audio Install!

"Honda's FOR ME TO POOP ON!" -Triumph...

ChillPhatCat

Do you have a tach? If so I'd just leave it alone... I like the feeling I get when I'm on an on-ramp and the speedo rushes to the trip meter ****. If you got a 140 cluster you'd be looking at a pitiful 105-110 or so and it really wouldn't look as fast. To use the tach as a speedo, create a ratio like this:

Say my car goes 60 MPH at 2000 RPM (in 5th gear)...

We take this 2000 RPM and divide by 60 to get a ratio of about 33.3

Then we take the RPM that you want to calculate for: 3900 (?) and divide by the ratio we got before: 3900/33.3 = 117 MPH

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1984 Firebird - Daily driver, 305 LG4, 3.23 rear, T5 - Hurst short shifter, Edelbrock 600 CFM 1406 carb, Performer intake - Edelbrock Pro-Flow air filter, gutted cat, IROC 16x8 5 Spoke Wheels, AIWA bargain basement (from Sears of course) CD player, Eight-ball shift ****
Check out my ride here

Jza

But do that afterwards. The last thing I wanna see on the news is some dude splattered all over the interstate and somebody going: "Well, I think he was doing long-division...".

okfoz

A 140 Speedo will work in your dash as long as you have the gage package. If you have the idiot lights with no gages, then your out of luck for getting a 140 Speedo, those are cable driven for some reason...

I know where there is a 140 Speedo for $60 in a salvageyard...

John

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G O D BLESS AMERICA

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87 Formula 5.1 TPI Auto Modified (Yellow/Black)

87 Formula TPI (5 Speed) Yellow/Gray STOCK

14.8sec 1967 Buick Riviera
1990 Buick Riviera (driver)
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83 T/A