There should be a fusible link on the car. There will be two small wires that mount to the starter solenoid. The last few inches of these should be fusible link. A lot of times these are missing. When they do their job and "melt" a lot of guys just replace them with regular wire. Most any auto parts store carry fusible link. You can buy it in pre-cut pieces or in a roll just like any other wire. Hope that helps.
On the firewall to the left of the wiper motor
The firing order for a 1968 Pontiac LeMans with a V8 engine is 1-8-4-3-6-5-7-2. This sequence ensures that the engine runs smoothly and efficiently. It's important to follow this order when setting up ignition timing or replacing spark plugs.
On a 1968 Pontiac LeMans, the ballast resistor is typically located on the engine compartment's firewall, near the ignition coil. It can also be found mounted to the inner fender or on the side of the engine bay, depending on the specific configuration of the vehicle. Its purpose is to reduce the voltage supplied to the ignition coil during normal operation, ensuring proper engine performance.
Closed end of the filter goes into the carb first and the spring goes into the open end.
on my 1968 lemans I removed the grease cap then removed cotter pin and nut from axle and it will come off both wheel & tire of course your brake shoes cannot be to tight on drum
What is the bolt pattern on a 1968 Pontiac Catalina
Three possibilities, 250 c.i. with a 1 bar carb, TDC 250 c.i. with a 4 bar carb, 5 degrees advanced 350 and 400 c.i. with 2 bar or 4 bar carb, 9 degrees advanced
See Link.
See link
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Mine is a 1968 400 ci "WT" code.
One can find a 1968 Pontiac Firebird mostly in car stores that sell used cars as these models are no longer being produced by the manufacturer, General Motors.