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for the past several years Ive been using Rotella T oil in the car and have been adding a zinc additive from Oreillys. The other day the car had a loud taping noise, turns out the rockers weren't getting enough oil to them. I pulled the Push rods and found that they were full of sludge. I...

Some of you may know already about my GN falling on its face and back fireing and making some awful chattering when you really lay into it. So i spent my weeks pay on a powerlogger and recorded a file for you guys to look at and maybe tell me what i need to do. by the way my speedometer is...

Every time I lay into the gas, RPM's come up like normal and turbo spools up and then it just falls on its face, shuddering and sometimes backfiring. All the sensors are ok and the timing is good. My machanic friend said to check the waste gate. It moves freely but when we checked it with the...

Ok I know nothing about the suspension on these cars. But I want whatever is making that god forsaken noise gone. It rattles like crazy and squeaks like a rat at every Bumb or shift on the road.

Is there a inexpensive way to adjust the Ride height of the car? Front?

Ok I installed a new cruise servo today. And all the vacum lines are on and sealed. But the car wants to surge and fall on it's face right around 40+, my speedo isn't the most accurate it real jumpy it wiggles from like 30 to 60 and says I'm going 80 when really I'm going 55. If his could be the...

Can someone please explain why my fuel pump won't prime up when the key is on? The first relay, the orginal I'm guessing worked fine till a couple of days ago it started running Continuously when the key was on. So I went to auto zone and got a new relay and now it won prime at all and only...

Alright Guys, my windows were working just fine until the other day they suddenly wouldn't roll up. They would roll down, but wouldn't roll up. I pounded on the door panel and the fuel pump kicked on. Now, the fuel pump turns on when you turn the key and never shuts off and the windows still...

Here's one for the turbo6 team: I have a Casper's adjustable cam position sensor cap. I have a Comp Cams 206/206 425/425 which is just a step or two bigger than stock. The Casper's cap allows 25 degrees in each direction from the factory set 25 degrees ATDC. My question is which way would I...

I'm looking for an 87 ECM part number 1227148 to do an 85 GN ECM upgrade. Chip not necessary, just need the computer.

Hi guys, I haven't been on here for a few months now but I seriously need some help. Bought an 85GN last spring for my son. The car had a cylinder down and when we tore it down we found #3 had a burned piston. The ring landing (between the rings) was broken in several places. The top of the...

Need these parts for an 85 GN: Rear lower seat or cover upper door panels Steering wheel button

Hey guys, another NEWBIE question: My Wastegate does nothing. I can operate it by hand so it's not stuck or anything. I have the type with 2 vacuum lines on it. When I remove the driver side vacuum line it does begin working but it doesn't seem to do much. I know I can pull it off and cap it but...

Hey guys, My son and I just finished rebuilding his 85GN. It currently has the cat converter, and then straight exhaust back to the rear axle bend where it loops around the axle and exits behind the right rear tire (no muffler). We'd prefer to have a little more stealth, but we do not want to...

Where can I find some GTO Blackouts?

Okay Guys, I'm rebuilding an 85GN motor for the street/daily driver. It's mostly a stock rebuild except for the cam. My big question is will this cam work okay in this application? Here's what it looks like we're going to end up with: .060 over bore 10/10 Crank Clevite Tri-Metal P Series...

Hey guys, My son and I just bought an 85 GN to restore for his first car. We pulled the engine and it looks like it will have to be bored to .060 over to clean up the cylinders. The guy at the machine shop builds a lot of racing stuff and has done a lot of GN motors, but he says he's never...

Ok, I found out that my turbo is shot, Whats the best turbo out there?

Alright guys, I'm a new proud owner of a 1985 Grand National (Resurrection in process) y'all seem to know alot more about them than those idiots at turbobuicks.com seems like thats all they wanna do is talk down to these "hot air" cars personally I don't like that, what do I need to get the best...