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Well...we're going to try something else first...I talked to a muscle car mechanic friend about it. He feels it might be electrical...even though the coil is brand new, it still might not be getting enough spark once the engine really warms up. We're going to run a bypass from the battery to the...

We checked the 3 connection blocks - all clean...nothing burnt or broken...but you always wonder about 50 year old wiring...I thought the same thing...too much heat affecting the connections there.

it's a survivor.

Thanks again for the comments...that electric fuel pump is probably 20 years old...i'm going to recheck the PSI coming out of it. You're right FBBO, I wish it was relocated to the back of the car. I'm hoping that maybe the push rod for the mechanical fuel pump is just worn and if I go ahead and...

No, I don't have the aftermarket temp gauge so I'm unsure as to the temperature that the engine is shutting down. It happened with the old points ignition and it's happening with the new electronic ignition. I'll need to check and see if fuel still squirts into the carb when I try to start it...

Thanks for the comments thus far. Because the cam pushrod that works the fuel pump is worn, I'm using an electric fuel pump for the time being...it was in the car prior to me upgrading the ignition but we re-installed it correctly with its own relay. I don't think its the ignition - we checked...

Thanks for everyone's help on my cam situation. I actually did go out and buy an FSM for the car...nice guide to have handy in restoring and maintaining these old cars! As a reminder, I've got a numbers matching/original drivetrain '68 Plymouth GTX. OK, I know these engines give off a lot of...

awesome! thanks for this!

Thanks!

Thanks. that will be my first step to see what condition that pushrod is in before I do anything else.

Sorry - what does FSM stand for?

I thought of that as well with respect to the pushrod being worn...can that be replaced externally (through the opening for the fuel pump) or will I need to remove the intake anyways to access and remove the worn pushrod?

I've got a survivor 1968 Plymouth GTX with 85,000 original miles on the original engine and transmission (A-727). It doesn't burn any oil but the cam is worn...it won't operate the mechanical fuel pump any longer. The original 3.23 rear end was rebuilt about 10 years ago...I haven't pulled the...