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Re: 1" 4 hole carb spacer ?
It's actually been documented many times that a 1" plastic phenolic 4 HOLE spacers is one of the cheapest improvements you can make to the low end of a street motor. It's not surprising that Marv wasn't impressed based on his application. They can be a tuning tool on high HP motors but other factors come into play. It's finding that sweet spot. On the street though, where we see a lot of part throttle, they can be great. I will say that I am coming strictly from a BBC stand point but I run them on everything I own and I do feel a down low difference. It is like increasing the length of your base plate and helps to more atomize the fuel before it hits the swirl of the intake. With all this said, it will be a case by case bases but I believe that picking up a little bit of throttle response, regardless of dyno recognized HP gains, is well worth the $20-$30 spent.
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