big block drivers

[hipo_p51]

have a new project car with a 390. runs good, but after a while when it heats up (idle or driving 10-15 minutes) it just dies. after it cools of a little, it will start back up. I do not know the water or oil temp. but by touch it is no warmer than my other cars. could it be a timing thing?? any thoughts. thanks

 

[Rusty67]

Where is your coil located ? It sounds ignition related. Sounds like something is heating up and can't take the heat, then when it cools off the car runs again.

 

[jonfor]

vapor lock? the gas is entering the carb too hot. try isolating the fuel line away from the engine.

http://en.wikipedia.org/wiki/Vapor_lock

 

[2+2GT]

I'd look at the coil. If it's shot, the coil will shut down when it gets hot.

 

[Wicked65]

I used to get sputter after my 289 would get hot. I was pretty sure it was distributor related. I know i touched the resistor on the dizzy once, and the car wouldnt start. Touched it again, and it started. Just another place to check if nothing else.

 

[2+2GT]

What resistor?

 

[bartman]

Your car runs then dies correct? My experience with vapor lock is it will run untill you turn it off then it won't start untill the engine cools. But hey, thats just what I battled a few years ago untill I rerouted the fuel line to keep it cooler.