Would this get rid of some "weak link" problems? I think it's stronger, right?

I don't know if they would bolt up or not, but if it does I'm sure someone could tune the PCM to accept it being there.

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2005 Loaded GP GTP Blue-Green Crystal (BLEEN)
About 91K miles


Mods and upgrades.....

Autolite 606 Copper Plugs, Autolite Wires, new PCV (66K)
New front and rear Ceramic brakes and brakes bled. (69K)
New pass. side wheel hub (88K)
New Dr. side wheels hub (91K)

The 4t65e is a weak trans too, so it wouldn't really solve anything...

Wait, am I reading this correct? Or are you asking if you could put a 4t80 into a car with the 4t65

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1998 GTP (L32 swap) | 2000 SE (L67 swapped)

Why buy something sensible with a RWD setup when you can build something really stupid, like this

pretty sure he's asking how to get rid of the weak link on the GXP (the 4t65e trans) and swap it with a 4t80e or something stronger.....o trannyman, where are u

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2005 Pontiac Grand Prix:|SE front|SPO grilles|HPTuned|HUD added|5-button DIC swap|Wizaired CAI|180*|EGR delete|GMPP rear sway|F&R STBs w/DRs brackets|3.29s|HD Diff|7/8" chain|WBS TA's|SD Headers|GenV SSM90 Hybrid(INSTALL PENDING)

BINGO!

_________________
2005 Loaded GP GTP Blue-Green Crystal (BLEEN)
About 91K miles


Mods and upgrades.....

Autolite 606 Copper Plugs, Autolite Wires, new PCV (66K)
New front and rear Ceramic brakes and brakes bled. (69K)
New pass. side wheel hub (88K)
New Dr. side wheels hub (91K)

meh....as for actually answering your question...im no help. sry

_________________
2005 Pontiac Grand Prix:|SE front|SPO grilles|HPTuned|HUD added|5-button DIC swap|Wizaired CAI|180*|EGR delete|GMPP rear sway|F&R STBs w/DRs brackets|3.29s|HD Diff|7/8" chain|WBS TA's|SD Headers|GenV SSM90 Hybrid(INSTALL PENDING)

If I recall, they're in the same/similar casing. I'll check it out tomorrow for ya if I remember

_________________

1998 GTP (L32 swap) | 2000 SE (L67 swapped)

Why buy something sensible with a RWD setup when you can build something really stupid, like this

The 4T80E is a MUCH bigger transmission. I don't know about the six speed cars, though.

_________________
One Big Ass Mistake America

Ok I know that the 4T80 is bigger but is it able to hold Hp and torqe better than the 4T65E-HD

_________________
2005 Loaded GP GTP Blue-Green Crystal (BLEEN)
About 91K miles


Mods and upgrades.....

Autolite 606 Copper Plugs, Autolite Wires, new PCV (66K)
New front and rear Ceramic brakes and brakes bled. (69K)
New pass. side wheel hub (88K)
New Dr. side wheels hub (91K)

Actually, Joe is right... Here's a visual reference




From the looks of it, the bellhousing would match up but for sure you'd need a shorter axle on atleast the passenger side. Not sure about the trans mount though

_________________

1998 GTP (L32 swap) | 2000 SE (L67 swapped)

Why buy something sensible with a RWD setup when you can build something really stupid, like this

If I remember correctly someone on the Bonneville site swaped his 65-hd for a 80. But I can't seem to find the post right now.

_________________
2005 Loaded GP GTP Blue-Green Crystal (BLEEN)
About 91K miles


Mods and upgrades.....

Autolite 606 Copper Plugs, Autolite Wires, new PCV (66K)
New front and rear Ceramic brakes and brakes bled. (69K)
New pass. side wheel hub (88K)
New Dr. side wheels hub (91K)

In a Bonneville, it is less of a challenge. That chassis has a bigger engine bay. The W-Body cars have more space concerns.

_________________
One Big Ass Mistake America

It looks like the case would clear. Only issues i'm seeing are custom cooling lines, and atleast one axle. Trying to find a pic of the mounting braket to see if it is in the same possition at the 4T65

_________________

1998 GTP (L32 swap) | 2000 SE (L67 swapped)

Why buy something sensible with a RWD setup when you can build something really stupid, like this

holy tranzilla batman why did GM not put that in the GXP to begin with? the LS4 makes more power then the N* the 4T80 was bolted to?

or was the N* more powerful i can't remember

_________________

92 LeBaron Convert: Turbo 3L 97 Grand Prix GT 4dr "Frankenstein": L67 4t65 swap
97 Grand Marquis: Summer DD 99 Grand Prix GTP: Top Swap Beater

I think the Northstar only had 280 IIRC

_________________

Varied from 270-300

_________________

1998 GTP (L32 swap) | 2000 SE (L67 swapped)

Why buy something sensible with a RWD setup when you can build something really stupid, like this

guess what? they can hold up to 600hp stock. the sts with the turbo in the front bumper blew his, but beefed it up and i think he's ruuning strong again. and its a 4spd rwd uses a 6l60 i think

and power depends on vin. vin 9 had 300 from 97-05 then the nvh took it to 290ish the vin y had 275 and lucernes and bonnies had different numbers along with aura which had 250 iirc but it is a good trans imho

_________________
http://www.cardomain.com/id/lacboi" onclick="window.open(this.href);return false;

If it's a 4 speed, it would have to be the 4L60. Not sure what year STS it is, but to my knowledge (for rwd n*'s) there's the 4L60, 5L50, 6L50, or 6L80

Also, these are Longitudinal mounted transmissions, the 4T65/4T80 being for transverse mounted applications. Unless you're planning on fabbing up a RWD setup, than there's no point mentioning. Me personally, all Hydra-matics are weak. Unfortunately for FWD, there isn't much alternative than just doing your best to build up the internals

_________________

1998 GTP (L32 swap) | 2000 SE (L67 swapped)

Why buy something sensible with a RWD setup when you can build something really stupid, like this

dont think the rwd come in anything less than a 5spd,our cts has a 5l40 and some sts came with that if it had a 3.6. n* sts came with 5l50 awd. but the stsv came with a 6l80. older ctsv had t56. i was sleepy when i typed that.


and this was the car i was talking about
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http://www.cardomain.com/id/lacboi" onclick="window.open(this.href);return false;

What about the TAP shift? From what I understand, GTP and Comp G transmissions are not interchangable because of the TAP shift functions. Since the GXP's have TAP, it seems like it would be the same issue.

_________________


3.5" MPS, 1.84 Rockers, 3" DP, Frt PEM, 39lb Injs., PowrTuner, Wizair
14.07@ 98.85mph 2.180 60'

This is true as well.

_________________
One Big Ass Mistake America

Keep in mind, the 4T80 was used long before there was a GXP

_________________

1998 GTP (L32 swap) | 2000 SE (L67 swapped)

Why buy something sensible with a RWD setup when you can build something really stupid, like this

most caddies had a auto stick witch is a tap shift type thing


here is the STS-V shifter (pic is huge)

_________________

92 LeBaron Convert: Turbo 3L 97 Grand Prix GT 4dr "Frankenstein": L67 4t65 swap
97 Grand Marquis: Summer DD 99 Grand Prix GTP: Top Swap Beater

Just go with a manual tranny!

_________________
Six-speed top-swapped GT, sold.
2006 F-150 4x4 for a daily driver.

I agree. Manual transmissions are fun.

_________________
One Big Ass Mistake America

What would a FWD manual tranny be?

_________________
2005 Loaded GP GTP Blue-Green Crystal (BLEEN)
About 91K miles


Mods and upgrades.....

Autolite 606 Copper Plugs, Autolite Wires, new PCV (66K)
New front and rear Ceramic brakes and brakes bled. (69K)
New pass. side wheel hub (88K)
New Dr. side wheels hub (91K)