i have an 84 Z28 that we pulled the 305 and put in a 350 4 bolt and a 350 turbo/w shift kit.after all this we burnt up the wiring harness,but thats another problem. in the processof putting in a new harness the speedo was destroyed.my original speedo has mph and kph ,but the only ones I can seem to find are mph only.will these work? or does any one know where i can get a speedo with both?

 

why do you need to know the kph so bad just wondering???

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1989 firebird formula

Mods: converted from T.B.I. to a carburator 305 to a 350. Flowmater exhaust,hedman shortie hedders,202 160 (882) heads,.447/.447 lift 222@.050 duration speed pro 327/350hp cam 350 .40 over (356) edlebrock performer rpm intake and a 600 edlebrock manual choke (1405) Proform H.O. distributor slightly revised 700r-4

Future mods comp extreme energy roller cam, world products sportsman 2 heads, msd 6al ignition, billet distributor, blaster 2 coil and a 406 engine is in the works soon!!!!

 

its not that i need to know that bad,its just that if im not going to replace with aftermarket than I'd like to keep it as close to factory as possible

 

Why dont you just get a junk yard speedo?

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1983 Pontiac Firebird SE
LG4-Based Chevy 400
700R4 Tansmission
Modified 4 Barrel Q-Jet Carb
Accel Super Stock 8mm Wires
Edelbrock Pro-Flo Air Cleaner
3.23 Posi Rear
14X7" Cragar SS/T Wheels
Clarion 45X4 CD/AM/FM Head Unit
100WX2 Amp
2 Pioneer 12" Subs in Custom Box
Third Gen Performance
"A four cylinder is only half an engine"

 

ive checked at at least 7 diff. junk yards they only have mph only speedo's and only the 85 mph ones. if i could find a higher speed speedo i would consider it