1965 Impala SS 396 Convertible
My recently purchased '65 has aftermarket power brakes that the previous owner installed. However, at the same time he installed a rebuilt 396 with a hot cam that will only get me 15 inches of vacuum at idle. My mechanic says 18 " are needed, others have said 15-16" is OK. Is it worth installing an electric vacuum pump to get 3 more inches? The car is hard to stop, so any improvement in breaking performance would be a good idea. I am currently going through the brake hardware but so far, all the rest looks OK, I could also swap out the cam for a stock one, I guess. I don't really need the extra performance nor the lumpy idle, as I plan to use the car as just a cruiser. Any thoughts Thanks!