2.8 with Grand Prix Turbo?

[88gtz]

I'm no trans expert, just going by what I've read. Idk the specific differences in the 2 I know they use the same case of course. I really don't care, I actually despise any retta wit an auto .02

[berettaboi]

i hear ya on the 'boo to auto' deal, but i'm happy with the decent mileage with the auto (due to keeping it under 2500rpms most of the time, where as stick i would be going through tires as well as gas a lot more! i have a stick tranny in the garage waiting for time, money, and another daily driver in a few years, then more time to hook it up, and more money for a good clutch and other parts

[88gtz]

i hear ya on the 'boo to auto' deal, but i'm happy with the decent mileage with the auto (due to keeping it under 2500rpms most of the time, where as stick i would be going through tires as well as gas a lot more! i have a stick tranny in the garage waiting for time, money, and another daily driver in a few years, then more time to hook it up, and more money for a good clutch and other parts

My 89 5 speed gtu gets any where from 28 to 31 I never seen that from my 88 gtu auto, I find the car way fun to drive compared to the slush box 3t40. It will be fast if I would get my rebuilt 3.1 turbo intercooled in it though, also I wasn't trying to argue I was just seeing if anyone was interested in a good trans for free throw down freight and its yours been sitting in a heated garage for 4 years now and don't have a use for it, but its been getting in the way just would hate to scrap a good trans .02

[scd88ga]

I really wouldn't worry about the trans unless it has high miles and you plan on beating the crap out of it. Even though the TGP trans is considered a "heavy duty" trans, that particular trans version was only offered in the TGP.

^^^ This is correct info! The 4T60-HD was ONLY available for the 89-90 TGP!

Also the 4t60 was available in MORE than the GTP. It was NOT specially built for just that model. Also naive and bad intel.

^^^ This is incorrect info... I thought you were a Pro Tech for GM in the early 90's!? You should really know things like this...!

Yeah, right. No, I AM correct. I have a 4t60 sitting in the yard right NOW in an '94 Olds Achieva S , so yeah. Nice try though.

LoL. I realize they're trying to make the trans "special" because GM slapped an HD label on it with a few insignificant "upgrades" if you can call them that.

I'm trying to make them BOTH understand that 4t60's were around as far back as 1984 and came in cars until 1996. But you know, you can lead a horse to water.......

You can find 4t60's in Cutlass Cierra's, Achieva's, and a variety of front wheel drive cars, but hey, I must be wrong because ... Oh wait, I'm not wrong.

The difference between me and you is I don't have to TRY! I KNOW what parts came in what cars, or did you already forget what I do for a living!? I did not say 4t60, I did not say 4t60E, I said 4t60-HD, which IS the model specifically built for JUST that model! I know the history and various changes within the 4t60 and what variation came in what year and what model! There is NO NEED to blab on and on about whatever pile is sitting in your driveway, I really do not care!

So, OH WAIT, you're STILL WRONG! Why you continue to drag misleading and irrelevant info into this discussion is beyond me! I am truly baffled! You were wrong about the TGP trans, and while we're at it, you were also wrong about when GM ceased production of the 4t60E trans seeing as I sold one from a 1999 model just last year..............

Here are the "few insignificant upgrades" to the 4t60-HD as you stated... rofl

--Transmission setup is unique, including larger transmission cooling lines and an auxiliary transmission cooler in the fender well.
--Hardened Gears and Gear Carrier Set.
--Additional Nested Accumulator Springs
--1898 rpm Stall Converter, not a High-Stall as the stock turbo is not large enough to warrant it!
--Vacuum Line Check Valve/Bleeder at Modulator, Vacuum Line has internal restrictor in-line to limit boost pressure and to allow check/bleed to function.
--Larger (Blackstone) 3 Core Radiator that is plumbed for the larger transmission cooling lines.
--Different valve bodies (they have "Turbo" stamped on them and provide firmer shifts. -- The shift speeds are also a bit different from NA versions)
--The GP had a hardened differential, sun shell, more clutches in 2nd, high element sprag, two clutch 4th, and a turbo specific valve body (line pressure I assume).

The 4T60HD in the TGP was made specifically for a boosted engine!

You may notice how that list is ANYTHING but FEW and INSIGNIFICANT!

Now maybe we can clear out the crap and sticky this? lol, maybe not?

Oh, sorry for quoting myself, but it had to be done, maybe it will penetrate that thick head the second time around, we can only hope, (unless it's all skull and no cerebrum?)!

THE END!




PS: *thanks to my w-body pals for backing up what I already knew with this tech info*

[SuzukiGhostRider]

Again, missing the point. Ronaconda claimed the 4t60 was a "heavy duty transmission made only for the GTP". Not correct. The 4t60 HD was a beefed up (slightly) 4t60 that was only available as an "HD" in the GTP. The 4t60 ,however, was not (as implied by his statement) made only for the GTP.

Now, are you yet again claiming to be a parts expert still? I'm still waiting on that company name of yours to cross check in my govt. access for a tax number. I still think you're a fraud. What no threats in your post here this time? Just more name calling. Keep trying to debunk me as someone who knows what he's talking about..... It's going SOOOO well so far....I've been around alot longer than you, both on this planet and on these boards.

You've proven you can use Google and that's about it. You keep trying to SOUND like everyone is wrong but you, but you can never do anything but copy and paste. How about some real world knowledge Mr. Parts Expert. You keep referring to my cars on boards and how they're "piles" or "not on the road" ,etc. yet none of that is true.

Is this truly all you know how to do? You are one sad little boy. Now , go get a real job and stop spending your life on the Internets...

And enough in this thread. You've totally derailed it , as usual for you on any board, and that's about ALL you're good at.

Oh, and you're full of crap too. I never said ANYTHING about when 4t60-e production started or stopped, I referred to 4t60 production. and it DID stop in '96.

[3X00-Modified]

The put a 4t60 in the Indy car... LOL

Might have been a HD so there your ALL WRONG!

LMAO

I just had to.



Thats right.. OD



Also I know its copy and paste, but Wiki has some good info.

Turbo-Hydramatic 440-T4

A breakdown of THM440T4 is: Turbo HydraMatic Model 440 - Transversely Mounted - 4 Speed Fully Automatic transmission

A 4-speed version of the 125 was created for the 1985–1986 GM C platform (FWD)/GM H platform (FWD) cars, the Turbo-Hydramatic 440-T4. Many parts were identical to the 125, though it was generally stronger and included an overdrive fourth gear. This transmission was first used in GM's 1985 Buick Park Avenue, Oldsmobile 98, and Cadillac Deville. In 1986, after switching to FWD, the Buick LeSabre, Oldsmobile Delta 88, and later, the Pontiac Bonneville also used this transmission. A special strengthened F-7 version was also used for the 1987–1992 Cadillac Allanté.

One unique feature of this transmission is its use of both a modulator valve and a throttle valve (TV) cable. Most transmissions either use one or the other to control shift points and shift smoothness. On the Turbo 440-T4, the TV cable exclusively controls the shift points, while the modulator valve controls the shift feel. This feature makes it very easy for a home, "shadetree" mechanic to adjust the transmission shift points with minimum effect on the shift feel.

The 440-T4 was originally slated to be used with downsized C body cars for 1984, however, issues with failures led to introduction being delayed until 1984 for the 1985 model year.

The 440-T4 was later renamed the 4T60.

A heavy-duty version of the 4T60 was used for the 1989-1990 Pontiac Turbo Grand Prix.

The electronically-controlled 4T60-E was introduced in 1991. It would become the basis of the GM 4T65 transmission, still used today.

A heavy-duty version of the 4T60-E was used only in 1996 L67 Equipped vehicles.

Applications:

4T60
1988-1994 W platform
1985-1993 H/C platform
1985-1993 A platform
1988-1990 Buick Riviera/Reatta
1985-1990 Cadillac models

4T60-HD
1989-1990 Turbo Grand Prix

4T60-E
1997-1999 Buick Century
1994-1996 A platform
1991-1999 W platform (some models)
1991-1993 Cadillac models
1991-1997 H/C platform
1990-1992 Oldsmobile Toronado
1990-1993 Buick Reatta
1990-1993 and 1996 Buick Riviera
1994-1996 Corsica/Beretta
1992-1996 U platform (with L27 and LA1 engines)

4T60-E HD (When Equipped with L67 Engine)
1996 Buick Park Avenue
1996 Oldsmobile 88
1996 Pontiac Bonneville
1996 Buick Riviera

F-7
1987–1992 Cadillac Allanté

[scd88ga]

SGR, for the third time, please reread ronaconda's post! I don't know if he could make it any clearer for you! Your reading comprehension is atrocious!

The TGP trans is considered a "heavy duty" trans, that particular trans version was only offered in the TGP.

I thought you were talking about the 4t60E because you kept on babbling about the 94 Achieva in your driveway! Is that not a 4t60E in that car!? And to my knowledge they only made 4t60's till 94, not 96...

I will disregard your second paragraph due to the silly e-thug BS in it...

What's this about Google? You make no sense! The detailed 4t60HD info was emailed to me, I didn't cop and paste anything off google! I knew some of the HD's differences off-hand, but not all, so I asked a friend! I'm not saying everyone is wrong, I'm saying YOU'RE WRONG! How hard is that to understand and how hard is it to admit? WOW!

I've provided a bunch of good tech info to this thread, you've provided nothing but hatred for my true awesomeness! I'm not the sad one here! The only thing derailing this thread from be accurate and informative are your posts!

You claim to be a GM pro auto-god know it all of sorts but make silly posts in tech threads constantly and seem to be stumped by the simplest of things! Why is that? Why do you dodge my questions and accusations? Why do you put words in my mouth? Why do you continue to spread false rumors and lies about me?

[3X00-Modified]

Alright that's enough... Insulting stops here. Consider both of you warned via this post... Any more after this and I will issue a true warning to the offending party.

[SuzukiGhostRider]

I actually didn't know the Indy had that Jon! Rofl. Nice.

Yes, my '94 olds has a 4t60 (NOT E) in it factory. All '94 up Achieva's only came in 4 speed automatic.

[berettaboi]

is that one of the 3.4(?) non production indy's?