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having a converter buit. how does this sound? **update**

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Old Jul 16, 2003 | 08:03 PM
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From: Jersey boy
Default having a converter buit. how does this sound? **update**

9" converter with a 2400 stall, 2.4 STR and a clutch that will lockup when racing(as well as everyday driving). the mods i plan to do in addition to those in my sig are: pulleys, headers, ported TB, NX 150 shot, and probably a 12 bolt with 3.42's when the rear end goes. if i cant hook up i will also do suspension mods as well as buy a set of et streets.
the converter is being custom built by a shop who i've heard nothing but good things from so i know the quality will be very high. he also guarantees his work and if anything ever goes wrong he will fix it fre of charge.
so how does this converter sound for my current and future mods? would you guys do anything differently with the conveter? any input is appreciated and thanks in advance
edit: its a 9.5" not 9
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Old Jul 17, 2003 | 11:53 AM
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Default Re: having a converter buit. how does this sound?

I would go with more stall. I went with a 3000 stall and really like it. It would probably be better with 3500. I was really worried when I ordered it that it was going to feel really loose around town. With it only being in there for a little over a month, I barely notice it. At least until I get on it
Since you are already planning on tearing up your rear, go more stall and get the ET streets. Check around the Drag racing section and see what that could result in.
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Old Jul 17, 2003 | 12:14 PM
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Default Re: having a converter buit. how does this sound?

2400 is only about 500-600 more than stock. Not worth it, IMO. And a stall that tight in a 9" would not work well...if you could even do it.

My guess is, what he's talking about building will stall more than 2400.
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Old Jul 17, 2003 | 12:14 PM
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Default Re: having a converter buit. how does this sound?

Way to low a stall. Take a look around. The smallest stall people use with an LS1 is 2800 (and the Vig 2800 actually stalls to ~ 3100)

3000 is the minimum stall with 3.42s for a performance orienated LS1. Around 3500 would be more ideal. Allow you spray out of the hole, give you a much better NA launch, and cure the dead spot on a 1-2 shift.
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Old Jul 17, 2003 | 02:57 PM
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Default Re: having a converter buit. how does this sound?

he says its a 9.5" and that i should trust him. hes a pretty reputable guy so i think ill let him do it and if i dont like it i could always raise hell and get him to redo it
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Old Jul 17, 2003 | 02:58 PM
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Default Re: having a converter buit. how does this sound?

also: what kind of shift extention should i ask for? annother thread says its 800-1200 for N/A but what about nitrous? that is where i really want it to perform. and are there any other things i should ask him about?
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Old Jul 17, 2003 | 03:31 PM
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Default Re: having a converter buit. how does this sound?

who is this repetiable guy? sounds like old school convertor knowledge. there is a reason that ls1 convertors are sold with higher stall points, it isnt worth going low. in fact that is the point of a bigger stall, to put you in the range where you peak your tq and hp. a 2400 rpm convertor just will be barely better than stock and you might as well go stock if you are worried about "drivability issues" - which there will be none with a small 3200-3300 unit.

also what do you mean a 800-1200 shift extention? i assume you mean over 2400 rpms. first i would never spray under 3200 rpms b/c of huge pressure down low. i would do a 3500 rpm unit on a stock internal car with nitrous and look for shift extentions in the 4500 rpm range to keep you moving.

BUT this is only my opinion.
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Old Jul 17, 2003 | 05:16 PM
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Default Re: having a converter buit. how does this sound?

Way too small of a converter. I would put a 2400 in my 99 Tahoe.

With nitrous I would do a 3000 - 3800 stall. On spray the converter will flash 500 - 800 rpms higher that it will N/A.

Stock stall is like 1800.
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Old Jul 17, 2003 | 11:17 PM
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Default Re: having a converter buit. how does this sound?

Ragtop, how do you think a 9.5" converter would act if it were truly a 2400? Pretty damn inefficient is my guess.

Trust us, if he actually builds you a 2400 stall, you will be missing out big time. You'll end up having it redone for sure.
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Old Jul 18, 2003 | 03:02 PM
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Default Re: having a converter buit. how does this sound?

how hard is it to have a converter restalled? i think i'm going to let him do it and if i dont like i'll make a big stink and have him redo it the way i wanted it in the first place. i think he is trying to sell me more of a street converter than a strip converter but i'll take it to the track and see how it does first.

as for gators question about reputable: he owns level 10 performance up in north jersey. i say reputable because a few of the guys in my dads car club had torque converters/transmission work done by him and they all say his work is bulletproof but they dont know anything about converters so they couldn't tell me if he built the right one for them.

one more thing: i asked him what would happen(to streetability) if we raised the stall and raised the STR also. he said it wouldn't have any effect. i would think it would feel a little tighter no?
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Old Jul 18, 2003 | 07:46 PM
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Default Re: having a converter buit. how does this sound?

Increasing STR can help streetability because the extra off the line punch reduces the torque required from the engine.
HOWEVER, low stall and high STR is a hard combo to learn to launch on the street. The hit goes right to the tires; there is not as much room to feather the throttle before the tires go up in smoke. I could launch my 4000 stall 2.5 STR converter much easier than when I had a 2800 with a 3.0 STR.

Colonel, I agree that a 9.5" housing is on the small side for such a low stall. With the right stator it might work but the shift extension will probably suck. Might as well pick up a stock unit restalled to 2600 for $300 bucks if that is all you want.

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Old Jul 19, 2003 | 08:37 PM
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Default Re: having a converter buit. how does this sound?

so if i were to have him stall it up some more you would suggest the same STR? also when restalling a converter, does it loose any efficiency or have an otherwise negative impact on preformance?
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Old Jul 20, 2003 | 08:47 AM
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Default Re: having a converter buit. how does this sound?

If his design is for 2400; restalling to 3000 will probably cost you efficency. Get a properly designed 3000+ stall.
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Old Jul 30, 2003 | 10:08 PM
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Default Re: having a converter buit. how does this sound?

:::UPDATE:::
well i let him do it the way he wanted. i only got 3 rusns but it looks like you guys were right as usual. when comparing to a few days ago which had less barometric pressure and more heat i picked up .2 and lost 1.5mph. i would think with the new clutch that is supposed to lock up while racing i would... i dunno... gain? mph?
moving on... his valvebody doesnt do ****. the hardest shift is park-drive and the 1-2 shitf at PART THROTTLE is much harder. i havent messed with torque management but i would think it would feel at least slightly firmer than stock at wot.
also i could only stall the stock 1800 converter to 1600 but i can stall this 2400 converter to 2600 (brake stall for both). with a decent burnout the tires dont spin at all at the track unless i stall it to 2500 and the place is about 100 miles away(not exagerating)and was highly reccomended by several people.
i am going to call them after work tomorrow and bitch my heart out. this is bullshit. they charged me 900 for the verter and 900 for labor and i only pick up .2 and -1.5mph and half the stuff the told me dosent even work the way it should. tomorrow ill post what bullshit excuse they give me on why they cant fix my valvebody and give me the converter i wanted in the first place.
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Old Jul 31, 2003 | 02:46 PM
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Default Re: having a converter buit. how does this sound?

well i called them up today and they said to try stalling it up as high as it goes and if i hooke that should produce the best times (they told me before that an idle would do it). i tried it and i had a 2.0 60' and spun like a **** so that may be it.
about the mph and valvebody they said that i should get rid of torque management immediately and set the converter to lock up sooner at wot which will make my mph go up. i am going to buy edit, try that, and see what happens.
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Old Aug 1, 2003 | 12:27 PM
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Default Re: having a converter buit. how does this sound?

Until you get traction to hold the converter when stalled all the way up, you're not going to get all that the converter can offer. Solve your traction problems before swapping converters.

BTW, if you can brake stall to 2600, your converter's true stall is probably 3200 or higher.
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Old Aug 1, 2003 | 12:57 PM
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Default Re: having a converter buit. how does this sound?

That's what I was thinking Ragtop.
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Old Aug 1, 2003 | 02:31 PM
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Default Re: having a converter buit. how does this sound?


whats up with this brake stall nonsense?
cant you just jab at the pedal
and the rpm will just flash to your stall point?

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Old Aug 1, 2003 | 02:43 PM
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From: Jersey boy
Default Re: having a converter buit. how does this sound?

brake stall means how high you can rev it up before the tires spin at a stop (while on the brakes).
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