Hey everyone just picked up a 64 with the 152 in it and I drove it for a few days and now it does not seem to want to stay running. It turns over and then sputters out. I have check the basics and it seems to be getting spark, fuel, air...I have checked the fuel pump before and after the filter. It just seems off that it went from starting and running fine to not wanting to stay running. Anybody have anything I may be missing? I have since swapped the plugs and still no luck. Also I was considering swapping with a 350. Would it be worth it to rebuild the stock 152 or just upgrade to a 350 the 350 seems to be an easier swap from what I have seen people doing. Thanks in advance for any information.