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RE:upgrade for transmission and rear end gears?

Subject: RE:upgrade for transmission and rear end gears?
by apeacefulstorm on 2008/1/10 1:06:11

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That would depend on quite a few different variables.
How much stall are you willing to tolerate?
How much cam duration will you be running?
Stock vehicle weight?
How much heat can you accept and how well can it be managed with climate and trans cooler?
Etc.

Generally speaking 2800 or so is a decent compromise on a mild lt1 type combo.
3000-3200 is as far as I would like to go on my own car that is street driven. Most lt1 guys are in this range and seem to enjoy the performance vs drivability.


Since I have never driven a car with a high stall I have no point of reference..... what does it feel like? What I mean is this, in a stock configuration, you step on the gas and the car goes.... with a higher stall you step on the gas and______? What happens?

The weight of the vehicle is normal stock. I am not losing any weight. As for heat, that may be an issue, only because I am in Alabama, and our summers are hot... so there are weeks when the temp is 95+ and high humidity.

As for the mods, the goal is 400 rwhp, would that qualify as a mild modifications?

The stall speed of a converter is achieved when the stator is up to speed with the turbines in the shell.
Difficult to explain quickly, but the stall speed is not the speed that the vehicle starts to move. A looser than stock converter will have a "slushly" feel, if it is ineffecient or excessive. One 3000 stall converter may feel like stock, whaile another brand may feel like a sloppy mess. The key is to buy the correct converter, the first time. Ineffecient converters will make a ton of heat, suck to drive, and hurt the trans over time.
A good quality converter with 3000 or less, a cooler, and a deeper pan should be plenty for your needs. Expect to pay $550-$950 for a good converter. I used to sell nice ones for $525 + shipping and have never had a single quality complaint. 1 gentelman in ST Louis sent his back for a stall upgrade, but otherwise no issues.
400 hp in my eyes is a mild package.


$550+ for a decent converter and some mild upgrades to the tranny will be sufficient to handle 400rwhp.... I read on another forum where you indicated that about 400 bucks would cover the necessary upgrades for the tranny..... is that correct?
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