No power, missing, backfiring

Hello

In 1968 as you mentioned
Your distributor has a set of points and a condenser. Make sure your gap is set correctly. As well as timing. To much timing and it spits back through the Carb. To Little timing and it back fires thru the exhaust. So, Be sure you have the correct timing :wink:. Also check the Mechanical advance in the distributor. As the springs maybe worn out and or it maybe froze up.(Common occurance in that model year) Which is a common occurance when they sit for long periods of time. Or If it has vacuum advance check the Vacuum pot to see if it is operateing correctly. Pull the distributop cap off and disconnect the vacuum line from the carbureator and create a Vacuum. (Sucking on the hose should suffice) you should be able to see the Vacuum advance plate move inside the distributor. If it doesnt move then replace the Pot. As long as the advance plate in the distributor is Operable. (If not replace the distributor)Or possibly get one from your local Hotrod Shop or have it reconditioned. Because, With out it, As you accelerate the advance is what gives the motor power. No advance No Power. Which cause stalling, spitting, Popping and Hesitation. Or You may need to also re-set the choke. Depending on what state you live in. However, here in michigan in the older model cars you had to set the choke differently for winter and summer in those older model vehicles! :Roll:

Hope this helps. Let us know.
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I pulled the distributor cap. The rubbing block, that is the black plastic piece on the points that rides on the distributor lobes looks flat. From the looks of it it does not look like that as the distributor turns the points would open.

Would this cause a dramatic loss of power and the other symtoms?

I put new points and condenser in, gapped the points and it fired right up.

Thanks for your help