Hard starting when hot

[gsharapa]

Josh,

Your id states 513 so I don't know if that is a big block or small block stroker but in any case put a timing light on it and run it up to 3,000 rpm or where it stops advancing and set the timing at a total advance as follows:

. 460/514 about 32 degrees

. Small block stroker about 34 to 35 degrees

I'd start there. Big blocks also get what is called "Hot Soak" which when the engine gets pretty hot usually after shutting off for 10 to 20 minutes the fuel will actually boil in the carb and fuel lines coming up the carb causing a vapor lock. Ford had the problem in 460 trucks years ago. The way to fix it is either a return line back to the tank or some insulation under the carb. Mr. Gasket makes some nice thin aluminum spacers and gaskets to put between the carb and manifore. I had about 5 on my big block 514 and now about 3 on my small block 427 stroker and never have that concern anymore down here in Dallas Tx.