I have a 74 Jimmy with stock 350 4bbl. I spits, spudders and stalls when it gets hot. I don't mean overheating hot, just hot. It gets me to work just fine in the mornings (about 70-80 deg. outside temp) but will stall in the afternoon ( about 100-115 deg. outside temp) so I'm pretty sure it's temp related. Some times it just spudders and recovers if I feather gas while driving. Sometimes it dies but will crank if I just throw it in nuetral and crank it. It acts like a cloged fuel filter, idles fine but dies when you try and go, so I changed it, and the ignition control module in the HEI just in case that was it. It has the original metal fuel ling that hugs the front of the block behind the altenator and smog pump. Is it vapor lock? Could I wrap something around the fuel line to keep the heat off it? This thing has let me down a couple times 'cause when it quits it takes a while to crank, and it's hotter than dang-it out here and I have three beautiful girls (13, 8 and 2) that my wife will kill me over if they so much as break a sweat because I break down again. Thanks.