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Tighter converter ?

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Old Jan 23, 2011 | 03:06 PM
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Default Tighter converter ?

To you guys that whent with the tighter converter what was your opinion and what was the end result

Also what do you think about a 3.29 ratio on the trans
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Old Jan 23, 2011 | 05:49 PM
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I'm not aware of anyone besides me who went tighter.

And like I've said in the other threads, I love the way it feels. Most of the slop in city driving is gone, and the car drives much more crisply. It looks like the car has also picked up about 1 MPG in city driving.

The only downside is that the transition from 4 to 8 cylinder mode and back is more noticeable, as is TCC lockup and unlock.
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Old Jan 23, 2011 | 06:42 PM
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you mean less of a stall?



Originally Posted by LS1 Racing
I'm not aware of anyone besides me who went tighter.

And like I've said in the other threads, I love the way it feels. Most of the slop in city driving is gone, and the car drives much more crisply. It looks like the car has also picked up about 1 MPG in city driving.

The only downside is that the transition from 4 to 8 cylinder mode and back is more noticeable, as is TCC lockup and unlock.
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Old Jan 23, 2011 | 07:12 PM
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Yeah, less of a stall.

I'm currently tuned to keep my converter unlocked in city driving (won't lock until 50 mph) and that made it a LOT nicer in traffic. However, gas mileage did suffer.
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Old Jan 23, 2011 | 08:22 PM
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Default stall and 3.29s

I upgraded my TC and went with 3.29s when I had my transmission rebuilt last June. The TC was very pricey but considering what I wanted to do with the car and to insure longevity I really didn't think I had a choice. MY transmission temps went up after the install and my car really pulled harder. My mods at the time were K&N intake, ported intake, Hogan downpipe w/cat, magnaflo catback and a Diablo 93oct tune.
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Old Jan 23, 2011 | 08:45 PM
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what gear did the gxp have from the factory
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Old Jan 23, 2011 | 09:01 PM
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2.93 right?
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Old Jan 23, 2011 | 09:20 PM
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my bad but i still think the gear is a waist you launch quicker but now you have a even bigger gap from first to second
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Old Jan 23, 2011 | 11:13 PM
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Originally Posted by AlabamaGuy
2.93 right?
yes your correct
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Old Jan 23, 2011 | 11:17 PM
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Originally Posted by vroom_vroom
my bad but i still think the gear is a waist you launch quicker but now you have a even bigger gap from first to second
no sure what your mean but I'm pretty sure a higher numerical gear ratio actually helps the "gap" between 1st and 2nd, less drop in rpm and engine gets back into powerband quicker.

Unless you're going to cam or run sticky tires, a gear change does little for performance gain. Just going to spin your tires more.
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Old Jan 23, 2011 | 11:26 PM
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The "gap" stays the same. You're changing final drive ratio, not the gear ratios of the forward gears themselves.
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Old Jan 24, 2011 | 06:57 AM
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Originally Posted by AlabamaGuy
2.93 right?
Is that the same for the impala?
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Old Jan 24, 2011 | 10:11 AM
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Originally Posted by AlabamaGuy
The "gap" stays the same. You're changing final drive ratio, not the gear ratios of the forward gears themselves.
I guess I should restate. Mathematically yes, the rpm drop should stay the same but I think it has something to do with the converter and how the gears load the engine. On a manual engine you can forget about it, the drop in rpm will be the same.

Last edited by JDMC5; Jan 24, 2011 at 10:26 AM.
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Old Jan 24, 2011 | 04:02 PM
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i think id b nice to put the lower stall in and shut off the dang DOD, never thought a v8 in 4 cylinder mode would be louder....


Originally Posted by LS1 Racing
I'm not aware of anyone besides me who went tighter.

And like I've said in the other threads, I love the way it feels. Most of the slop in city driving is gone, and the car drives much more crisply. It looks like the car has also picked up about 1 MPG in city driving.

The only downside is that the transition from 4 to 8 cylinder mode and back is more noticeable, as is TCC lockup and unlock.
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Old Jan 24, 2011 | 06:03 PM
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Originally Posted by 91_rs-teal
i think id b nice to put the lower stall in and shut off the dang DOD, never thought a v8 in 4 cylinder mode would be louder....
To be clear, it's not the noise that's more noticeable, but rather a slight bump or surge. It's kind of like having DoD with torque management removed.
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