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Well long story short, I have a Grand National with a stock 6.0-lq4. Now for the long part of the story. I swapped out my factory GN exhaust with a single 3" exhaust system which I made. I have the exhaust manifolds from a firebird (for fitment). My concern is with my Y-Pipe...

O.k. I've ripped the entire factory A/C system out of the car(85GN). I have installed an 08' LQ4/4L80E (6.0) from a Chevy 2500HD. I want to modernize the car and the last A/C system was shot! Does anyone have any recommendations or experiences with "Vintage Air". Does not have to be in...

Hi, I've been on our site for 45 mins now using the search tool. I've also searched the site using Google. But to no avail.... Please help me find a thread on how to cut and roll the front fender on a GN. I like the tire to be closer to the fender lip for a more flush look. The car has...

Today I have a great deal. For You that is... I have a Willwood Master cylinder part No. 260-8556-bk It has a 1.12 (1-1/8th) bore. Black powder coated to a glossy finish. Brand new never used never bolted in New in the box. Pictures of the M/C installed are of my own. I just got stuck...

Well, here's the deal. 10 miles after I bought this, my tranny broke:mad: Bummer I have since, totally changed my direction with the car and now have a 6.0l LQ4 in it so vacuum is no longer a factor for me. I have a total of 150 miles on the master cylinder. Wilwood MC 7/8" bore easy to press...

Hi guys, I need about 6 inches of an engine wire harness for an 85 GN or whatever fits . Under the hood on the drivers side, looking from the front of the car it connects to the fuse box and is the left hand plug. I need it for just one wire and to plug up the hole. Anybody have one? If so...

Hey, Happy Labor Day. I'm hammering out some details before I dive into my build. I will eventually add a turbo to this engine. However, I need to get this car on the road asap on a fairly low budget. So, for my first of many Questions: I was wondering if a stock 85 GN fuel pump...

Would anyone care to tackle a list of items I would need from a 2005 or newer Chevy 2500hd donor vehicle. I plan on swapping the 6.0 & 4L80E into my 85 GN. I would like to keep the A/C and cruise control. I would also like to incorporate the factory truck guages and a/c control unit into the...

Hi, Just wanted to post a link incase you or a friend need an engine and trans. Thanks for checking it out. http://www.turbobuick.com/forums/parts-sale/272547-85-gn-hot-air-engine-trans.html#post2064702

Hi, Just thought I'd post this link. Just incase someone, or someone you know, is looking for an engine and trans. Thanks for looking. http://www.turbobuick.com/forums/parts-sale/272547-85-gn-hot-air-engine-trans.html#post2064702

Well I'm thinking of going V8turbo. It'll be a long project. What I have is a 85 HA, still in the car. Runs Great! about 1500 miles since the rebuild. Never ran hard just break in miles. I bought the car in Jan of 08 and have been restoring the car. I only start the car and drive it...

Well a few weeks ago I took the 85' GN out to get the fluids and charging system some exercise. I had some major problems that required me pushing my car home. I was on a back road letting my son sit on my lap and drive at idle speed. I heard a subtle metal sounding clunk, then the car came...

Reciently, I converted to LS1 discs all around and its time to recoupe some money. So, for sale I have my aluminum drums. I think I added 25 lbs to the rear with the disc swap. The drums are extreemly light. They are in excellent condition. I also have all the parts for the rear drum...

Hi, every one, I have a HA with SC&C Stage 2, SPC springs, and LS1 discs all around. I was wondering what would be just the right amount of HP for my 275/18" Nitto 555nt. My plans are: Posi, to build up the trans, Motorwork, Shocks, Rear control arms and upgraded swaybars. (I like to...

I swaped to LS1 brakes. The drums are in good condition. I will toss in the rest of the rear brake stuff. Just pay for extra shipping. 100+shipping.

Anybody ever try this style proportioning valve? Or what are your thoughts on it, if you haven't tried it. Will it work on a TR? I currently have LS1 disc brakes all around. JEGS 63025 - JEGS Adjustable Proportioning Valve and Distribution Block - JEGS

Well folks, I did it. Finally. First off let me introduce myself. My name is Joe I live here in Houston, Tx. (Not a native). I just bought my first GN about a month ago. The GN had a bad Powermaster. The PM worked but cycled every time you touched the brake. By the way Kirban gace me 100...