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Trans Am Information / Looking for my 1978 Trans-am
« Last post by cayenne on October 15, 2017, 10:59:36 PM »
Hi guys and girls,I'm looking for my 1978 Firebird Trans-am in chestnut Brown
with a Vin * 2W87Z8L164019 Anybody see or have this car?It was traded in in Lafayette,LA back in 1984 and I miss my car...Any help I would appreciate it. Thanks
General Discussion / Re: short or midlength headers
« Last post by RENOVATIONS on October 15, 2017, 10:33:03 PM »
DriveTrain / Re: New speedo crazy
« Last post by Stringer on October 15, 2017, 06:07:00 PM »
I am not sure, but it could be that changing from a km/h speedometer to mph speedometer has resulted in the speedometer drive gear, at the transmission, no longer being the correct operational ratio.  I would change out the drive gear (for one with less or more teeth) then check it. Should cheap and easy to do.
DriveTrain / New speedo crazy
« Last post by Crisis on October 15, 2017, 05:00:39 PM »
Hello everyone,

I am speaking to the group to see if anyone can help me ...
I'm French. I am restoring a 79 Trans Am which has always been European. She had a speedo in Km/h with a bouncing needle.
After having replaced the speedo (by a 100mph one), the two cables (from the tranny to the cruise and from the cruise to the speedo) and the cruise control, the needle no longer bounces but does not indicate the right speed:
The needle moves with a little lag after kick off. Below 70km/h, it is too low by 10km/h and beyond 70km/h it is too high increasing, finally to indicate 160km/h when I am only 110 to the gps.
Would anyone have an idea of the problem?

Thank you :)

My car : 403ci olds with th350 - tires 4x 275 40r17
General Discussion / short or midlength headers
« Last post by 1970RA3 on October 14, 2017, 06:37:43 PM »
I am new to the site and I thought I had posted a question the other day regarding trying to find short or midlength large tube diameter headers for my 70 400 4speed car. I cant find my post nor have I gotten any feedback, which tells me I did something wrong? I need to figure out hoe to post and interact, we are starting this build soon it will be complicated and I need help?
Electrical / Re: Dashboard door lock switch installation
« Last post by Crisis on October 14, 2017, 04:58:09 PM »
Very helpful, thanks! :D
According this, it appears that i can't hijack the actual wiring with my 3 pins switch.
I'll remade all the wiring, using 2 relays.

I'll post here diagram and photos of my work soon. :)
Restoration / Re: Repairing AC centre dash vents
« Last post by Aus78Formula on October 14, 2017, 02:04:16 AM »
Just updated the old pics in the post with new pics since Photobucket died and had a few requests.
DriveTrain / Engine Flush... dirty radiator water
« Last post by via3d on October 13, 2017, 12:57:50 AM »
Resurrecting a 79 firebird 403

Issue:  The radiator water is dirty and sooty looking.... black.

-Sitting a few years.
-Brand new radiator.
-no oil in water is evident. 
-have filled & drained radiator 4 times now. seems to be dissipating to some, but still significant i wont her this way.

What is easiest / best way to flush engine?
I figured at this point I need to get 3 way adapter/short piece of 3/4" heater hose &  flush with engine running from the front side heater hose/top of water pump with radiator cock open ???

Do I perhaps have a bigger issue with dirty black sooty water?
DriveTrain / Re: LEAK - under dashboard - new radiator
« Last post by via3d on October 12, 2017, 06:49:28 PM »
Thanks for reply guys.   Yes SA74SD was right when he said I had a heater core leak... BUT I still have the other issue re: dirty water.     

WHEW !  this is quite a job replacing the heater core. I went with an aftermarket one.
I will have to find a shop that will pressure test it for me.

The orig one appears to be all brass. Shouldn't I be fine with a Spectra after market heater core? I will check about getting it pressure tested tomorrow.

Anyways, I temporarily coupled the 2 heater hoses together... to run the car, and I still have black, sooty looking water in the radiator (brand new radiator). I have Fill and drained 4 times now and I am still getting this dirty looking water.

I will start a post on radiator flush... 

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