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Restoration / Re: Headlight panel bolts
« Last post by Forsaken on Today at 02:11:31 PM »
Someone on here has got to know what Iím talking about and has replaced these four bolts. Please a little help?
Restoration / Re: Grill insert black paint type?
« Last post by Forsaken on Today at 01:59:21 PM »
Just go to eBay and order a brand new set for $150. Comes with all screws and all. And double sided tape. Aftermarket fits just as good as OG. My 79 is currently being restored and I will be buying a set for mine.
Aftermarket Questions / Photos welting seal
« Last post by Sander on Today at 12:54:19 PM »

First Im new on this Forum and Dutch, so sorry for the bad Englisch.  ;D

I have a 80 Trans AM, it's almost ready to paint after lots of hours metal work.
I have a question about the welting seal, i know there have bin a lot of post .... but the pics i need the are no longer there. ( photobucket bloks)

I bought a new one from OER. ( see pic)

It does not seem to fit, de seal won't close the cap between flares  and body work
Do i have the good Welting Seal ?
If yes, how do i get it rigth on the flares ?
Photos will be great

Electrical / Re: 1979 Trans AM Tach issue
« Last post by Aus78Formula on Today at 06:15:16 AM »
It could be actually operating fine between 0 and 2000rpm but needle has been bumped or the fragile assembly inside touched. There's not a lot you can do without risking making it worse. They do sell new tachos by OER  although when last checked a few years ago 79 wasn't one of them. Perhaps now.
DriveTrain / Water in transmission ATF
« Last post by via3d on Today at 01:22:16 AM »
 -79 Firebird .403 TH350

I discovered I have water in the the ATF.

I have just replaced the radiator and I am confident it is either:
A. the leaking original radiator caused this problem too...
B. condensation for last couple weeks caused it..
No doubt at all, it is milky pink fluid.

I drove car maybe 1 mile at most in this condition before I discovered.   
It has sat idling in approx. 1.5 to 2 hours total time working on other items.   

Anyways, I have dropped the pan, cleaned it, and it is draining over night.  Doing new filter & gasket of course. 

I realize at least 1/2 or more of the fluid in the Torque Converter.

What are your opinions next step? :

A. - Dont put filter on, run the car around the block and drain again? repeat until full red ATF is observed ?
B. - Disconnect cooler line hose and drain this way instead?  run at idle in neutral for couple minutes draining then top off again?  doing this intermittently until ATF is 100% red observed??  (run w/ filter to catch impurities and then replace with another new one)

I know I know... A lot of people have said do not run at all and rebuild now right away! 
Did I catch in time that draining a 2-3 times will suffice without future damage ???

Thoughts please. Buttoning up the tranny pan this weekend.

DriveTrain / Re: LEAK - under dashboard - new radiator
« Last post by via3d on Today at 01:19:40 AM »
Update:  YES, I think it is stained from age and minerals and rust.

I have performed engine flush with tee adapter on heater hose - 3 -4 times and I am now getting fairly clear water...
Was pretty dirty!

Next, when I button up the  heater core and replace tranny fluid (another critical post) ...  I will run the car to warm, (thermostat open)  and then do engine flush again...  as many times until I get clear.  :)    Appears I am on track   

I have let it idle for 20-30 min and still cannot get car to warm up... staying good and cool :) 
Electrical / 1979 Trans AM Tach issue
« Last post by Toolmaker1965 on October 21, 2017, 10:26:48 PM »
Hi I recently bought a 79 trans am 403 with 71000 miles on it. I'm fixing the little things and one thing is the tach. At idle its sets at 4000rpm and goes to max 6000 when I'm driving. I have a wiring diagram and I've checked and all the wiring is correct. Any ideas?
Thanks in advance
Parts Wanted / Re: Looking for 403 engine side motor mounts to put in an olds 455
« Last post by JPASCO on October 21, 2017, 09:17:51 PM »
I put a 455 Olds / TH350 in my '81 Firebird and had a 403 Olds before that. The 403 Motor Mounts worked fine. You can buy/order them at most Parts Stores. My Mechanic likes the GM ones. I've only been finished about three months and am very happy with it's performance. Best 1/4 mile is 11.86 sec @ 112 mph. I've only had limited run time and expect much more.

Have fun with your toy.

DriveTrain / Re: 1979 Pontiac 301 wonít fire
« Last post by 81Turbo TA on October 21, 2017, 06:16:27 PM »
Also,,my new timing set had 3 markings and the standard timing mark was very difficult to see. I installed it wrong but caught it before putting the cover on.
There are 2 tdc..use cylinder 1 in the tdc compression stroke,,(remove spark plug 1, put finger over spark hole and turn engine over, feel the push of air,,then creep up the balancer timing mark with socket on crank bolt),set the distributor to point at one (not  between 1+8).  When you put the cap on remember to follow the firing order in a counter clockwise direction.  If the distributor is 180 out you will get some popping through the carb.
DriveTrain / Re: Olds 403 Build
« Last post by JPASCO on October 21, 2017, 11:54:03 AM »
I had a 403 (408) cu in Olds in my '81 Firebird and it was raced from 2006 to 2016. I built it to Bracket Drag Race and it was spectactular.... Ran 12.40's @ 110 mph in the 1/4 mile.
Comp Cam XR276HR, Edlebrock heads triple port job, Holley 750 double pumper, Long Tube Headrees, Forged Pistons, 10.5:1 compression, Edlebrock Air Gap Single Plane Intake Maniford Victor Jr., Forged Rods, Girdle for the "Webbed Mains Support", Balancced rotating assembly, Dual Electric Fans, Mr. Cool Radiator, 3:42-1 Eaton Positraction, 35 spline axles, Th350 with B&M shift kit and ratch shifter. This resulted in 465 HP and 483.9 lb-ft of torque.

I think that over ten years of Drag Racing should overcome the feedback about "bad builds" that say that the Olds won't hold together. Mine just wore out and time for a "refresh"
I put a 455 (468) Olds back in and it's running strong. 115 mph in 11.86 sec so far.


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