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Turbo/Stall/Gear question

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Old Dec 21, 2009 | 05:21 PM
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Default Turbo/Stall/Gear question

I have a TC76 turbo, 3200 stall and 3.73's when I put the car in 3rd at about 45-50mph and floor it the car pulls strong but when the car goes into 4th it pins you back and really pulls.

Or if you do a straight 3rd gear pull from 45-50 it pulls hard but not exciting
same pull in 4th and the car is a different animal, car makes 10psi in both 3rd and 4th.

You think it's just the gearing and not utilizing the hp and tq in 3rd? Car came with 3.73's when I bought it so I have no comparision.
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Old Dec 22, 2009 | 10:21 AM
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wel, Id be realy surprised if the trans lasts very long at all, making shifts into 4th under power.....4 th gear clutch pack doesnt even like it on a stock car.

Most of the cars I do.....run 3.00 gears and higher(lower numerically). Zombiess car shifts to second at 75mph, goes through the traps in second at 136mph.

I have several others with 2.73's to 3.00's, all perform great. The express van runs 3.73's but it runs a 29 inch tire (on 20's) and weights 6600lb.
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Old Dec 22, 2009 | 03:47 PM
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It's a built trans so I hope it holds up.
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Old Dec 22, 2009 | 03:56 PM
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If it's a 4L60E, good luck with that.
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Old Dec 22, 2009 | 04:06 PM
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Originally Posted by 98Z28CobraKiller
If it's a 4L60E, good luck with that.
It's been a year with my performabuilt lvl 2 and so far so good, running nitto 555R's
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Old Dec 22, 2009 | 04:48 PM
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Should be fine as long as the temps are low. Id switch to a lower gear to help with load.
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Old Dec 22, 2009 | 04:53 PM
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Originally Posted by OUTLAWZ RACING
Should be fine as long as the temps are low. Id switch to a lower gear to help with load.
I plan on switching I just don't know what to go with 2.73's or 3.23's, I want the car to pull hard from 50-55mph in 3rd.
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Old Dec 22, 2009 | 04:57 PM
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3.23 would be fine you will get alot more mph out of it also. I think 2.73 would be kinda low for what you want. I run 3.73 on my set up but I have a six speed, Im switching to a 3.08 gear because I run top end all the time, Im looking for 200+ mph in the mile by the next event.
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Old Dec 22, 2009 | 05:05 PM
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Originally Posted by OUTLAWZ RACING
3.23 would be fine you will get alot more mph out of it also. I think 2.73 would be kinda low for what you want. I run 3.73 on my set up but I have a six speed, Im switching to a 3.08 gear because I run top end all the time, Im looking for 200+ mph in the mile by the next event.
Thanks, the best way to describe the 3.73's in 3rd is like a 125 motorcross bike, when the car gets into 4th it feels like a open class bike.
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