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burnin oil · 01-27-2014, 10:58 PM

Edelbrock had a different part number for thr 400sb performer cam but I have no idea what the difference is. Checking the lobe lift doesnt tell the whole story as you need to compare the base circle. The lobe can only be so big and fit in the cam tunnel so the cams base circle gets made smaller. If you are still running the stock rods on your motor you dont want to run it that high in RPMs as they are the weak link. I have knocked several stock rods. This is the reason alot of guys go to the 5.7" rods. That extra 1/4" of stroke does alot to max out piston speeds so 5500 is probably all you want to spin. With after market rods and everything forged I have spun almost 7k RPM on a stock bock but it is probably not the smartest idea. I am also a huge fan of HV oil pumps for some reason.

01-27-2014, 10:58 PM	#9
burnin oil Registered User Join Date: Jan 2013 Location: Eastern TN Posts: 1,921	Re: 400/406 Builds Edelbrock had a different part number for thr 400sb performer cam but I have no idea what the difference is. Checking the lobe lift doesnt tell the whole story as you need to compare the base circle. The lobe can only be so big and fit in the cam tunnel so the cams base circle gets made smaller. If you are still running the stock rods on your motor you dont want to run it that high in RPMs as they are the weak link. I have knocked several stock rods. This is the reason alot of guys go to the 5.7" rods. That extra 1/4" of stroke does alot to max out piston speeds so 5500 is probably all you want to spin. With after market rods and everything forged I have spun almost 7k RPM on a stock bock but it is probably not the smartest idea. I am also a huge fan of HV oil pumps for some reason.