so after weeks of searching old posts still no answer!....i recently swapped an L28et into my 74 260z...car drove fine for a couple of days...but all of a sudden the car started to die out after a couple of minutes of being on....heres the problem: if i start the car it turns on and idles fine...once it warms up the car all of a sudden begins to die out....so i rev and rev and rev until it just dies out..leaving a cloud of smoke from the exhaust...if i try to restart the car it wont turn on but the fuel pump does!...once i have waited a few minutes the car starts up like if nothing happened!...i really dont know what it is!...any advice would be helpful!...thanks!