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My plans are to save up and put a 12 bolt in my car during this winter. I'm not sure which gears I want to use because I don't know what my top speed will be. If I stick with 3.73s what is an estimated top speed?
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02 Black Z28 A4
SLP Air Lid, K&N Air Filter, SLP Loudmouth,Free Ram Air and Thottle Body Bypass, Pacesetter Longtubes & Off Road Y Pipe, Transpak, MSD Wires, FTRA, 3.73s, Subframe Connectors, Strut Tower Bar.

96 Chevy Beretta 3.1(For Sale); 78 Chevy Scottsdale 5.7 (9 inches of lift with 36s(For Sale)); 02 Silverado Z71 5.3(Stock, but not for long)

Probably still close to 160, they are limited at 163 by the computer not the RPMs and do it stock... or so I've heard
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Former ride: 531RWHP/477RWTQ Only bolt ons! ...technically everything used a bolt to install
[ Edited on 09/15/2007 @ 16:14:22 ]

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Posted By: badSol On: 09-15-2007 @ 16:45:44     Reply | Top | Edit

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They're drag limited, not computer limited (if you had the Z rated tires)

But yeah, you're not gonna hit the top speed anyway, stick with 3.73's

EDIT: and it's 163 for T/A's, 160 for Camaro's
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1999 Trans Am M6, FRA, K&N, Skip Shift bypass, SLP Radiator, LS1 Motorsports lid, LS1 Motorsports Smooth Bellows
Flowtech Long Tube Headers, Lane's Custom True Duals: Dr Gas X-Pipe, 12" Dynomax Bullets, Hotchkis STB, Pro 5.0
Textralia OZ700 clutch, billet steel flywheel, 334.6 rwhp 345.6 rwtq, 2001 Trans Am A4, SLP LM2
[ Edited on 09/15/2007 @ 16:46:24 ]

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Posted By: BlackVert On: 09-15-2007 @ 20:57:05     Reply | Top | Edit

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In my old LT1 A4, I buried my speedo with 3.73's It was buried for a good 10 or 20 seconds (til I ran out of road) and still pulling. Granted, I had a supercharger also. I'd agree with Pongo.
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1999 Black WS6 Trans-Am, 6 Speed, Leather, Convertible, 5% Tint, Free Mods.

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Posted By: fast82Z On: 09-16-2007 @ 21:12:22     Reply | Top | Edit

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Figuring that you can be in overdrive with the converter locked @ 6000-6100rpm with 3.73's you'd be moving 180mph that's also given it has the power to do that. At WOT in drive that 6100rpm on 3.73's should get you about 114mph. I used a 25"-26" tall tire for all those, cause I'm guessing you're running 245/50/16 or 255/50/16 tires.
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1982 Z28, 383, D-1SC intercooled @ 10psi, trick flow heads, solid roller cam, 3.73's, stall
9.97@137, 1.48 60', 633rwhp@7400, 472rwtq@6800 AIM:CHATV400

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Posted By: Killer_BlueBird On: 09-19-2007 @ 02:59:58     Reply | Top | Edit

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Here is the calculator.
http://www.f-body.org/gears/
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http://www.fquick.com/garages/Pontiac/Trans_Am_WS6/2002/8842/

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Posted By: 02Z28Camaro On: 09-19-2007 @ 12:57:46     Reply | Top | Edit

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Ok thanks, thats what I wanted to hear.
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02 Black Z28 A4
SLP Air Lid, K&N Air Filter, SLP Loudmouth,Free Ram Air and Thottle Body Bypass, Pacesetter Longtubes & Off Road Y Pipe, Transpak, MSD Wires, FTRA, 3.73s, Subframe Connectors, Strut Tower Bar.

96 Chevy Beretta 3.1(For Sale); 78 Chevy Scottsdale 5.7 (9 inches of lift with 36s(For Sale)); 02 Silverado Z71 5.3(Stock, but not for long)

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