Mine has 305TPI.auto,2:73 posi,what would guys say???130-140????

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86 IROC,canary yellow(originally black),fully loaded.305TPI WITH 700R4/SHIFT KIT,3:73 POSI REAR,4 WHEEL DISC BRAKES,T-TOPS,POWER LOCKS,POWER WINDOWS,TILT,CRUISE,SADDLE INTERIOR,POWER ANTENNAE,SPOILER OFF 87 IROC SO NO THIRD BRAKE LIGHT ON ROOF,16" BY 8" RIMS OFF 89 IROC,3"INCH EXHAUST WITH A 2 CHAMBER FLOWMASTER AND 3 1/2" BY 18" LONG CHROME TIPS,20% TINT ON SIDES,HATCH AND T-TOPS,GTS TAILLIGHT COVERS,AFTERMARKET FOG LIGHTS,PIONEER 180 WATT CD RECIEVER AND DETACHABLE FACEPLATE,WITH JENSON SPEAKERS ALL AROUND,TALKING RADAR DETECTOR"BACON ALERT"

....Long live the EIGHTIES!!!and my love for the IROCZ

 

Well, an '85 IROC 305 TPI/auto with 3.42s topped out at 141, and 350 IROCs did 144-146. I would GUESS with 2.73s in a detuned '86 engine would be around 130-132.

 

I maxed out at 135,no more ,no less(140 speedo)on I-95 in my 86 LB9 auto with only an ADS chip once back in 91 racing a GTA(unfortunately the GTA stayed about 2 car lenghts ahead) I'll never forget it because my leg was shaking like $hit but what a rush!Thank god I didnt get pulled over.

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1990 Trans Am GTA,Black/Black Leather,350,auto 3.23,Dual Cats,
SLP Package,SLP Torque Converter/Shift Kit,Fastchip,GSC's
G-tech 0-60 5.1 1/4mile 13.6@104
stock(track)14.3@96
member www.transamgta.com
Previous Thirdgen
1986 Camaro IROC-Z