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A friend of mine bought this off of Ebay and wanted to share it with everyone. Pretty cool historical information of the car's development.

The automotive news show motorweek holds marathons for their older seasons on Youtube and one of the episodes they played had this spy shot of a Grand Prix prototype that I haven't seen anywhere else. I wonder if they still have the picture in their archives.

It took me 22 years but I finally did do that manual swap

I honestly believe that you're *overthinking* this situation. these 2 are found on Amazon, the *781* is priced $8 more than the *761*. They cosmetically appear to be identical except for *what I see* the park return lever being a *new* item on the *761* vs a *used reman* item on the *781*, there were no piston dia changes '88 thru'93. As for ACDELCO themselves, I don't feel that they will supply you with an item that will outlast another rebuilders product & much of what ACDELCO supplies comes from Asia or possibly Mexico, I personally lean towards Cardone for my *reman* items. They are American. This leads me to my next question....what has happened to the current caliper other than a piston seizing up or a fluid leak that you feel it is necessary to replace it?

For once I condone a thread being resurrected 22 years after the fact.

Saesons greettings all! A fellow member recommended this group so I just joined. Sorry I didn't know about the W-Body group in past years...might have saved me some headaches in repairs, LOL My first w-body was a '91 Grand Prix SE that I got in 1997. It served me well over the years, till I sold it in 2003 and got a '95 GP SE with the B4U package. I'd still be driving it today if the rear suspension/frame hadn't rotted away due to that horrible brine/salt they put on the roads here. Who knows, maybe I'll get another GP someday...I really enjoyed driving that car!

Also of note it looks like this car has the half pop up headlights that this clay model had as well, though it looks like they are taped shut possibly? Ignore the filename, definitely not from 1988.

Interesting.....6 years before the platform actually appeared the groundwork was already in place, I suppose that this would also apply to not just the Cutlass but all of the other G bodies at that time.

Bought this today, as my accumulator has air in it. Thank you!!

Yeah, I'm not sure what happened with the broken link. The Deboss garage link is basically the same strategy though. One removes the slave and manually actuates it in reverse to bleed the system. Thats all one needs to do. Its just awkward in the car with limited space to work.

Do not blame the caliper for this situation, this particular design is a high maintenance design. Remember to constantly use the parking brake, keep the calipers clean, do not allow dirt buildup in between the parking brake lever & the caliper housing. Pull the calipers at least once a year & inspect them, ensure the sliders are moving freely. Seeing as the piston is an internal item & is protected by an external dirt shield they do not usually seize because of external dirt or corrosion, but they will seize due to lack of maintenance, where the brake fluid has not been flushed on a regular basis. Keep this in mind...brake fluid is hygroscopic, that means it attracts moisture, moisture gets into the caliper bore, works on all of the metal parts, flush the fluid & do it regularly. I can't speak for anyone else but I still have 30 year old calipers on my car, they are kept painted & clean, even tho the car sees very limited use nothing gets neglected.

Welcome! A lot of us have moved on from w-bodies at this point in life considering the newest ones are now at least 14 years old, so finding one that isn't beat or rusted to hell is a challenge. But we still love them, so though we don't check in as often as back in the day, there's still a good chunk of us that pop in from time to time.

2008 Buick Allure Super

well technically it started in 1994 on everything except lumina, with notable exceptions of the 95+ lumina/MC reverting back to drum for awhile on base models (should give you an idea of how confident gm was in their old calipers ) and then went as late as 1997 on the cutlass that was kept on the gen1 platform and was it 98? or 99? when the 1.5 gen lumina/MC was discontinued. where it starts is kinda odd and where it ends is kinda fuzzy.

I like the bottom half of the car more than what we got for the base model cars, but I like the more aggressive cladding the SE and GTP cars got, it really screams late 80s/early 90s and makes the cars look as distinct as they do.

Shame that the engineers at PMD did not keep this overall design for the flanks for the GP..... Everything above the beltline is the same as what went into production but all below that was tossed. This prototype is more in tune with the sides of the other 3 cars of the 1st gen platform, the sides are smoother, do not fold in at the bottom, more complete coverage all of the wheels, body does not taper in at the front and rear. That's a really good looking car, too bad it wasn't kept as it sits.

Whoa! That is crazy! I wonder if they were playing around with the idea of the miniquad headlamps that debuted for 91?

Well, the 'Vert is finally back home. It was a bit more expensive than I'd anticipated, but didn't break the bank. He replaced both cylinders and not only re-stapled the top at the rear, but also put in screws to more firmly secure it, and patched a small rip to keep it from getting worse. The top hasn't looked this good since I've owned the car. Hopefully, it will last a few more years before needing to be replaced. Interesting side note: He said he couldn't find anything wrong with the rear passenger side quarter window. He said once he took things apart, it started working again. "It was probably just jammed up," he said. I could be a little upset at the labor cost to find that information out, but overall, I still think he did me right.

I'll message you!

Ive also been thinking about this idea - some type of adapter that just lets us run a two bolt “normal” master cylinder. I’m going to talk to the fab guys at my race shop and get their thoughts… @Bake82 I might need another firewall plate temporarily if you have one!!! :-)

theres a thread somewhere here with the part numbers from Summit, we used whatever that was. works good.

UPDATE: This link proved useful: Did this link get moved somewhere? http://www.w-body.com/showthread.php/76462-Getrag-284-282-SS-braided-clutch-hydrualics-bleeding-procedure

Started doing this today. Both pins in mine (slave and master) were rusted tight - had to drill and then use a punch to get them out. Ordered a new slave as they were still available. The fab guys at the race team I used to drive for took a look and want the entire system cleaned out with mineral spirits, and then refilled and re-bled after. My clutch reservoir cap is cracked - anyone have a replacement or know where to get one?

On heater hoses use the ones that match the yr of the alt bracket.