I just put on a 1/2" four hole carb spacer on my engine to get the carb off the manifold and keep the carb from getting to hot. Does anybody if adding a four hole spacer would have any effect on jetting at all? The car has been running really good but the carb was getting to hot. Unfortunetly I don't have a cowl hood so with the biggest drop base air cleaner and 3" element i could only get a 1/2" spacer to fit. Any comments on jetting would be great. I am running 67's and 73's with a 35 suiters I think.