When we were at the Nats. quite a few people stopped by and looked at my car and told me I should put a carb spacer on it. I'm thinking of putting a 1" or 1.5" spacer on my engine. What are the differences in a 4-hole vs open? I'm running an SP1 and a Holley 950 HP carb.
I am looking at the Wilson Manifolds Tapered Carburetor Spacers 1.5" and the Canton Phenolic Tapered Carburetor Spacer 1". Or should I go with a 2"? I don't have any hood clearance issues.
Any feed back will be appreciated.