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Originally posted by losbadgt:
i have 3.73's on my 00 gt and there was no different of gas from the stock 3.27, woke that car a lot but i'm changing to 4.10's soon, like FasterDamnit said we have a good overdrive.

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Originally posted by 03gtPONY:
At 70 i'm tacking at 2200 rpms from my stock 2000 rpms with 3.27's.

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Originally posted by nitrous_bob:

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Originally posted by 03gtPONY:
At 70 i'm tacking at 2200 rpms from my stock 2000 rpms with 3.27's.

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wow thats almost idle. 200 rpm's makes no dff in mileage , my notch used to tach 3 grand at about 70

well worth it IMO...you can't have your cake and eat it too...go for speed or mpg..take your pick

2nd the 4.10's

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Thats true. It just sucks for me cus I use premium gas for my chip tuning. Maybe thats why i'm complaining LOL
 

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Posted by Blue97GT (Member # 4241) on :
 
chuck...

you know my opinion already!

4.10s
 

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Posted by bunchmyfunky (Member # 360) on :
 
4.10s is 300rpm higher then 3.73s and 600rpms higher then 3.27s. I didn't notice any change in mpg.
 

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Posted by r3dn3ck (Member # 3192) on :
 
I got 3.55's. I didn't want that much extra RPM all the time so I said no to 3.73+. Woke the car up quite a bit.

4.10's are tire shredders if you're heavy handed with the throttle.
 

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Posted by talaposa (Member # 2460) on :
 
I dunno the first engine I built had 3.5:1 and I got 14mpg and wasn't terribly impressed with the additional performance. I went to smaller cubic inches 2.75:1 gears and a 6 speed. I can vulcanize pavement in the 1st three gears and get 21 mpg in the trip to Reno, NV and return.

The 6 speed essentially gives the extra torque multiplication.
 

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Posted by X97headswap (Member # 5210) on :
 
I vote 3.73's
 

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Posted by knight12 (Member # 4817) on :
 
373's
 

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Posted by cdog301 (Member # 5136) on :
 
with these gas prices 3:55!
 

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Posted by Tims GT (Member # 5613) on :
 
How much better performance do you get out of 373s then stock

[ April 21, 2005, 09:51 PM: Message edited by: Tims GT ]
 

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Posted by RACEERX (Member # 5612) on :
 
Stock is 3.27 and it all depends on what your plans are for car use. do you want to blow guys on freeway away or race from stop sign to stop sign? Im a freeway guy myself, and wont get rid of the 3.27, they are wonderful with alot of HP behind them, I have no bottom end torque problems and blow guys off the line as well. I would sugest that you make up your mind if you want a faster car and start with the engine or forget it. Your foundation is the engine the rest is just bells and whistles. I used HCI motorsports in Sacramento to build me a modular capable of 800 HP but boosted down to 13 psi for a decent 540 RWHP. Givem a call they are great guys 1-916-643-2280.

check out my site www.freewebs.com/raceerx

My car stats:
HCI GT Motor bored 30k,cobra crank, oil pump, CP pistons, Patriot heads and cams (274 duration). Vortech supercharger and after cooler, Snow performance water injection, cobra fuel tank with twin focus pumps, 42 lb injectors, 99 lightning mass air, CDC side exhaust, Dynomax super turbo mufflers, Bassani mid length headers and x-pipes, spec 3 stage 2 clutch, anderson cold pipe with K&N (the shaker hood assists) with a SCT tuner. Its at dyno right now and is estimated will be finished soon at close to 600 hp with fuel upgrades.
 

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Posted by Quick 88LX (Member # 1950) on :
 
4.10's
 

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Posted by Kevs01gt (Member # 2343) on :
 
what MPH are you guys redlineing 4th gear at with 3:73s and 4:10s .. ?
i like having my long 4th gear, it helps with nitrous
 

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Posted by h8louzn (Member # 1075) on :
 
yes now a days you can have your cake and eat it too.
4.30's and a viper 6speed with a .50 od!

You just have to pay for it thats all.
 

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Posted by twstd5o (Member # 1981) on :
 
4.10s definately...

3.73s are good for a while but you'll want to change eventually.

[ April 26, 2005, 07:45 AM: Message edited by: twstd5o ]
 

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