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Topic: Speedo gear (Read 1840 times) previous topic - next topic

Speedo gear

OK tired of my speedo being 8mph fast, I have I believe a 19tooth in my c4 trans with 3.73 gears. Any one know what the correct is?
88 Turbocoupe: Coast High Performance 331 kit 28oz balance, Comp XE264HR14 cam, 58cc 185 afr heads, 1.7 roller rockers, Mass-Flo EFI (was POS to setup and their techline is a joke at best)
Full 1 5/8 primary equal length headers, 2 1/2 exhaust, Full manual reverse VB c4 and baked off clear coat "BECAUSE RACECAR"

 

Speedo gear

Reply #1
I'm running a Black 21 tooth with a 225/ 60/ 16  W/ 3.73  It runs close enough for me +/- mph there's a chart motorsports putout. Or give me your tire size and tranny I can make a call and get back to you
[SIGPIC][/SIGPIC]:ford:87 Turbo Coupe through the floor sub frame connectors, 5.8 swap Ford racing heads Harland sharp 1.6 rockers BBK shorty swap headers 2 1/2 BBk X pipe magnaflow ler's. Megasquirt 2 with 36lbs injectors on hurricane intake with 4150 throttle body.Tremec TKO 600 Quicktime blowsheild spec stage 3 clutch. 3.73 gears and still not done

Speedo gear

Reply #2
Im not sure, but mine isnt reading right with my new gear.  I may be able to sell it to you cheap if it is what you need.
Mike

Speedo gear

Reply #3
Thanks thewestie, I know the chart your talking about in the back of the orange motorsport book. Used to have one but threw it out and got a new book thinking it would be in there, but of course it wasn't.
88 Turbocoupe: Coast High Performance 331 kit 28oz balance, Comp XE264HR14 cam, 58cc 185 afr heads, 1.7 roller rockers, Mass-Flo EFI (was POS to setup and their techline is a joke at best)
Full 1 5/8 primary equal length headers, 2 1/2 exhaust, Full manual reverse VB c4 and baked off clear coat "BECAUSE RACECAR"

Speedo gear

Reply #4
Btw I haven't got a chance to look at my car (we have a long distance relationship) but its stock tire size.
88 Turbocoupe: Coast High Performance 331 kit 28oz balance, Comp XE264HR14 cam, 58cc 185 afr heads, 1.7 roller rockers, Mass-Flo EFI (was POS to setup and their techline is a joke at best)
Full 1 5/8 primary equal length headers, 2 1/2 exhaust, Full manual reverse VB c4 and baked off clear coat "BECAUSE RACECAR"

Speedo gear

Reply #5
Rule o
I spend money I don't have, To build  cars I don't need, To impress people I don't know

HAVE YOU DRIVEN A FORD LATELY!!

Speedo gear

Reply #6
Quote from: TOM Renzo;371931
Rule of thumb

A method of determining the north pole of an electromagnet.
I think I learned that in a H.S physics class. It's interesting how that became such a wide spread saying.

Speedo gear

Reply #7
Yes i
I spend money I don't have, To build  cars I don't need, To impress people I don't know

HAVE YOU DRIVEN A FORD LATELY!!

Speedo gear

Reply #8
Yeah, I think you wrapped your right hand around the coil so your fingers pointed in the direction of current flow. Then your thumb pointed to the north pole.

Speedo gear

Reply #9
Don't forget that tire diameter has a role in how the speedo reads as well....
-- 05 Mustang GT-Whipplecharged !!
--87 5.0 Trick Flow Heads & Intake - Custom Cam - Many other goodies...3100Lbs...Low12's!

Speedo gear

Reply #10
Quote from: V8Demon;372333
Don't forget that tire diameter has a role in how the speedo reads as well....
Paul your pm box is full...:poke:

Speedo gear

Reply #11
Quote from: mercury-man;372334
Paul your pm box is full...:poke:

fixed....
-- 05 Mustang GT-Whipplecharged !!
--87 5.0 Trick Flow Heads & Intake - Custom Cam - Many other goodies...3100Lbs...Low12's!