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shift kit vs. tranny tune?

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Old 02-21-2008, 01:58 PM
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Default shift kit vs. tranny tune?

ok so ive got my shift kit here and ive got time to put it in this weekend. Before i do it though i have a question. What is better for firmer quicker shifts, a shift kit or a tune with upped line pressure etc?
Old 02-21-2008, 02:03 PM
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both will/should accomplish the same thing...

I've always heard to do one or the other - but not both - as it puts too much strain/pressure on the tranny and **** breaks...
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Old 02-21-2008, 02:53 PM
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shift kit it is
Old 02-21-2008, 08:46 PM
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i had both and loved it. a mild shift kit with a great hp tune. the car chirped 2nd when i went WOT but at normal driving shifted pretty much normal. i must have ran my car down a track about 60 times and beat the hell out of that leased vehicle. not one issue with any powertrain
Old 02-21-2008, 08:54 PM
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aaaahh, so YOU'RE the one... I THOUGHT someone around here had done both, but I couldn't remember who... hehe

anyway, just mentioning what I had seen/heard around several various forums... doesn't mean it's accurate... perhaps your "test" even makes it more reassuring that our trannies will hold up to more abuse with no ill affects... I gotta start romping on it some more...
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Old 02-21-2008, 10:10 PM
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Originally Posted by 06MonteSS
aaaahh, so YOU'RE the one... I THOUGHT someone around here had done both, but I couldn't remember who... hehe

anyway, just mentioning what I had seen/heard around several various forums... doesn't mean it's accurate... perhaps your "test" even makes it more reassuring that our trannies will hold up to more abuse with no ill affects... I gotta start romping on it some more...
Haha.....I've done both too.....
Old 02-21-2008, 10:31 PM
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nice!!

so there ARE possibilities of doing both without ill affects... sweet!!

so what have your guys experiences been?? better to do both, or just one??
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Old 02-22-2008, 12:00 AM
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What shift kit is better?
Old 02-22-2008, 05:54 AM
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I've done both as well.
Old 02-22-2008, 06:40 AM
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i had just the tune first for about 6 months and it had firmed up the shifting but still didnt chirp 2nd, so we put the shift kit in and had both in for over 1.5 years
Old 02-22-2008, 07:04 AM
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Remember, a shift kit will make the trans shift quicker/better and may not be as noticeable with out a tune due to torque management... A "tranny tune" does not affect shifting other than increasing line pressure and is a vague expression. A tranny tune will affect torque management which decreases engine power (in various ways) before during and after the shift, not affecting the actual mechanical shift. I had a shift kit and a tune, the tune by cutting torque management in half (not getting rid of it) showed better gains than the shift kit. Actually had a tune, then installed a shift kit, then had to get the line pressure increased (via tuning) to stop a shudder in the 1-2 shift at wot. Would chirp the tires into 2nd, and chirped the tires more often down shifting. The shift kit showed the biggest gains to me by the almost instant and firmer down shifting, no hesitation. Also... some shift kits for rear dirvers actually advertise that the shift kit will be ineffective if a vehicle has torque management. Something to think about, but the moral is after all this rambling, do them both and you will be amazed in the diff over stock.
Old 02-22-2008, 12:55 PM
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Originally Posted by SILVER LS4
Remember, a shift kit will make the trans shift quicker/better and may not be as noticeable with out a tune due to torque management... A "tranny tune" does not affect shifting other than increasing line pressure and is a vague expression. A tranny tune will affect torque management which decreases engine power (in various ways) before during and after the shift, not affecting the actual mechanical shift. I had a shift kit and a tune, the tune by cutting torque management in half (not getting rid of it) showed better gains than the shift kit. Actually had a tune, then installed a shift kit, then had to get the line pressure increased (via tuning) to stop a shudder in the 1-2 shift at wot. Would chirp the tires into 2nd, and chirped the tires more often down shifting. The shift kit showed the biggest gains to me by the almost instant and firmer down shifting, no hesitation. Also... some shift kits for rear dirvers actually advertise that the shift kit will be ineffective if a vehicle has torque management. Something to think about, but the moral is after all this rambling, do them both and you will be amazed in the diff over stock.
My HPT tune and ZZP SK really woke my car up....pair them with valvetrain mods that improve our sucky top-end, then you have a mean car.
Old 02-23-2008, 07:58 AM
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I have both and am quite pleased. I even asked my tuner and he highly recommended a shift kit to go along with the tune and also said it should increase the life of the tranny, which I have heard before.
Old 02-23-2008, 10:46 AM
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So why is the intense shift kit 79 and the zzp 29? which one is better?
Old 02-24-2008, 11:42 AM
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I thought the Intense was $120. Anyway they are designed differently but both do the same thing. IIRC the Intense kit uses springs and washers while the zzp kit uses plastic pieces which limit the travel of the pistons in the tranny. Bottom line is they both accomplish the same thing so I would get the zzp. Plus I trust zzp over intense anyday.
Old 02-24-2008, 03:55 PM
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Originally Posted by SSWS6
I thought the Intense was $120. Anyway they are designed differently but both do the same thing. IIRC the Intense kit uses springs and washers while the zzp kit uses plastic pieces which limit the travel of the pistons in the tranny. Bottom line is they both accomplish the same thing so I would get the zzp. Plus I trust zzp over intense anyday.
Yeah intense gets a bad rap in the w-body world....I heard they screwed some people.
Old 05-25-2008, 09:54 PM
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what's the part number for the zzp shift kit?
Old 05-27-2008, 06:22 AM
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Originally Posted by CardinalsRed
what's the part number for the zzp shift kit?
Here is a link for it: https://www.zzperformance.com/grand_...=570&catid=105
Old 05-27-2008, 10:12 AM
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Anybody have this?

https://www.zzperformance.com/grand_...ts1.php?id=547
Old 05-27-2008, 11:21 AM
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Gotta love the error (when you click on your link, Emerson):

Sorry. There was some problem with the data.


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