Speedmaster heads part 2. Plus intake work
Ok guys not a lot of info tonight but some good info. Column on the left is stock out of the box head with stock out of the box Speedmaster valves. I checked last years numbers and at different lifts some are better some are worse. Last years head had a stock new Edelbrock exhaust valve and a used 2.02 Edelbrock valve that I had put a 30 degree backcut on the intake valve. I took a picture of the post were one of our members said being stock it may not like that backcut. Well it didn’t as last years heads numbers were much jumpier and not as high. This head in my eyes stock would make some very nice horsepower with a .500-.600 lift cam. Would a better valve job help? I’m betting yes but I’m not going to pull it off, do a valve job only, and flow test it again. To much waisted time. Ok then I bolted the stock Speedmaster intake on and did another test. Thankfully it was one of the better ports on the intake as it’s got a couple buggered up posts casting wise (easy fix but I wanted stock numbers) flow numbers with stock intake are in column on right. This intake as is would not go on any engine of mine. 5-8 cfm maybe if I was in a hurry but hopefully it comes around better after a gasket match and some TLC grinding work. I’m ready to bolt his stock oldschool Torquer on it but before I remove the Speedmaster intake I want to try to sneak my flex camera in to check alignment but battery needs charged so that’s for tomorrow.