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Need my 86 GN tranny rebuilt asap, looking for someone in the Indianapolis area who knows how to do em right. Would rather not have to ship this car out of my area, any suggestions would be great! Thanks,

I need to tap the header flange where the crossover mounts to the header. Can someone confirm the thread size, is it m10 X 1.5 X 40? If so, would this tap work...

Can you use a ECM for a digital dash GN if the ECM comes from a analog dash GN? Sent from my iPhone using Tapatalk

Have any of you removed the rear alt bracket that bolts the the head and back of the alternator? Can we delete this part? Do we really need it? Sent from my iPhone using Tapatalk

How much are Modded ECM’s? Who sells them? Think I need to run 120# or 160# injectors for my E85 fuel system I’m working on. I currently have the stock ECM. Sent from my iPhone using Tapatalk

Spectra fuel sender is new, though this pump looks like it’s too small? Got this DW300 from amazon. Is this the right one? I have 80lb flow matches injectors coming with turbotweak chip I ordered from Eric for 100% E85 I also have an6 and an8 lines ready to install. Can I get close to 500hp with...

Anyone know the bolt size for the oil pump housing that attaches to the timing cover? I read the torque spec is 18lb? The two inside snapped off while i was torquing to "18lb" .. SIGH Hoping ARP has the bolts I need, I called them, they said they need to know what size they are.

I am undecided , should I get the Rollmaster billet from TA performance or the Comp Cam 3129 from Cotton's?

I am about to replace my stock timing chain. I placed the crank on TDC according to the markings on the harmonic balancer and the degree tab. Here is what my stock looks like now, before I go pulling this, does this look right? The crank has the "0" pointing up. The cam has that small arrow at...

My car came with a TA49 turbo installed from previous owner. The original Garrett turbo was with the car as well boxed up. It still works, not bound up etc. how much could I sell it for to help fund my E85 conversion? Not sure what they are worth. My GN has 42k original miles, I have no idea how...

Finally did my first mod other than a radio install and power antenna removal! Flushed all brake lines and entire system bled, they work extremely well, very happy with the results! Here's a pic of the new vacuum brake setup. Sent from my iPhone using Tapatalk

I have a used PowerMaster for sale and the brake pedal that goes with it. Came out of my 86 GN that has 42k original miles. I converted to vacuum brakes so future repairs etc. would be easier. Complete with back plate that mounts to firewall as well ( No firewall gasket, I reused that part )...

I am converting to E85 very soon. How big of injectors can I go before needing a ECM modification? My current setup is in my sig. I do not want to go crazy and get a double pump etc. Would like to go with a single pump, maybe 80# inj. or MAYBE 120# inj. if no ECM mod needed. I know I need to...

When converting to vacuum brake setup and using the TTA aluminum vacuum block. What size vacuum line do I need? I will be using a 1987 Buick Cardone 50-1243 booster with master cylinder. I just am not sure what size vacuum tube I need. Also, does anyone know the GM gasket # number that goes...

I found this video on youtube and wanted to share it. It explains the g body window adjustments for the doors.

I posted a video. I am hearing a grinding sound that comes and goes then hearing clicking / tapping sounds. Also you will hear a rattle type sound happening. If you watch the whole video you should be able to hear what I'm talking about. And I also noticed water dripping from the turbo where it...

Here are the chips that came with my car when I purchased it this past February. Is the top one still usable or any good? The two in the middle, anybody know what they are? The bottom one I think is stock ship?

I have a TA49 turbo. When the car is running, or under normal driving. Should the wastegate be all the way to the right with the puck closed? as shown here: Then when I get on the throttle the actuator should push the puck open correct?

Does anyone know where i can get weatherstrip for the pillars and the vertical rail? I have gaps in the sides of the windows at the edges and corners of the window. I had the t-top seals replaced with a set from soffseal I think is what the package said 2 days ago. I could have sworn the window...

Hello to all! This is my first ever Grand National or any Buick vehicle for that matter. Since I'm new to these cars, I'm sure I will have plenty of questions for you all :) Here are some pics of my new lady.