Ok here is a really weird problem with my 69 camaro. It has a '77 350 with carb.
New starter, older battery, old alternator. New pertronix 1181LS and flame thrower coil.
Here is the deal: the car starts fine when cold and barely turns over when warm!!
I live in Maine and started it this morning in 35 degree temps.drove it for 3 minutes parked it for 15 minutes and when I tried to start it, it cranked over really slowly 3 times then fired up. This problem has developed after putting the pertronix in, and is getting worse since then. The cooler the engine the easyer it is to start. I don't get it.
Any Ideas?
Thanks

 

The old Camaros were known for starter troubles when the starter got hot, but I don't think that is the case with 35 deg outside temps. I am thinking that your new distributor is set with too much initial spark advance, as that would alsogive the symptoms you described. If you haven't done it, set the initial advance to spec using a timing lite. It could also be that the starter has seen better days, but check the timing first, it is easier and cheaper to do.

 

i will have to agree with pete as the most likely culprit being timing but would consider other possibilities if after the timing is checked we still have problems. the pertronix unit itself, electronix will do wierd stuff especially when heated, is there a reason you decided not to go with a reliable, cheap HEI unit?? if the alternater wasnt doing well it may be discharging the battery while the car is running causing low voltage at next startup. the third thing that comes to mind is a resistence problem in connections, wires, starter after a hot soak. also is this a 12 volt or resistor needed coil?? GM starter solenoids have a 12 volt tap to provide a full 12 volts during cranking and use will depend on car and coil setup. anywho check that timing and if thats not the problem id start with some voltage and voltage drop tests let us know what you find kurt