23 tooth speedo gear any good?
 

I need to change speedo gears for my 3.55s and the calculator comes up with the 23 tooth gear. I've read that the gear gets chewed up pretty quick, but I've also read that if you grind it down a little with some sand paper it lasts. Anybody have any luck with these? When I swap the engine from my 86 I'll probably change the drive gear to a 7 tooth, but till then I want to know how fast I'm going.

Yeah those 23speedo gear tooth R garbage, i went through three in one year.

[This message has been edited by 5.0SN95GT (edited 04-26-2001).]

I wore a couple out. I never heard of the grinding down trick.

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91 coupe
3.73's,long tubes,2 1/2" exh,ported stock t-body,ProM-77mm
cobra intake,edelbrock heads,B303,1.72 rr's
36lb inj's,tremec, & a Paxton NOVI 2000!!!
11.020 @128.95 on BFG Drag Radials (275/60/15)

Mine has lasted pretty good, got 20th.+ miles and still ticking.

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93GT, S-trim (2.95 pulley), SFMU, Stage 2 TFS TW heads, Stage 2 Cobra intake, AFM powerpipe, PRO-M 75mm massair, 75mm throttle body, 42lb.inj. 1 5/8 headers, 2 1/2 h-pipe and exhaust, 2 chamber Flowmasters, 3.55 gears, Ultradyne cam, Elder.timing gears, Black Magic fan, 3 row alum.rad. MSD6al/BTM, MSD coil, MSD shift light, subframe connectors, A-pillar gauges, Pro-5.0 shifter.

Mine is still working great. I have 25,000 miles, on in and its been in there for three years now. I got it at Dugan Racing.

John

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Swift 1
'86 5.0 LX Conv. AOD, Baumann Shift Kit, Tranny Cooler, FMS 4.10s, GW Subframe Connectors, K&N, '89 Upper Intake TB & EGR Spacer, 180 Deg. Thermo, FMS Wires, 15 Deg. Timing, Off-Road H-pipe, 2 CH. Flows, ASP Underdrive Pulleys
Best 1/4
60' 2.139
14.888 @ 91.64 mph

I put in a 21 tooth for now just to make mine closer. Does anyone know what tooth I need for and 88GT with 3.73 gears?? I know my friend with a 91GT and 3.55 needs the 23 tooth so I should need even more right??

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88GT 5-speed
Mods: Cervinis Ram air hood 3.73 gears, King Cobra clutch, Pro 5.0, March alum. Pullies, DynoMax Cat-back, WMS Xtrac subframes, 16" Ponies.
"Nip it in the Bud"
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