I bought a second hand set of ported 374 castings. The person said they were done by Joe prince racing. I've checked but I can't seem to get a hold of this shop so I don't know if it's out of business or what. The springs were called XE components 918 springs and after much web searching I can't find anything about these either. It's a dual spring installed without cups. Any insight would be greatly appreciated. I'm going to run a voodoo 60122 .585 231/239 and I don't want to tear it down because of broken springs

 

don't know about the heads but the springs are comp cams extreme energy 918's(aka cc918's)

 

he said it's a dual spring dude.

take a spring off and throw it on the tester.

 

Alright my mistake they aren't 918s. It's an XE components 618 spring. I'll have to find someone who has the spring tester

 

damn my ADD is outta control lately, didn't even catch that part

 

Bump to help me out