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i have an 03 z and im wanting to know what heads are factory...im going to order a set of valve springs and i have looked around and see where alot of peeps are running pac 1218 who makes this spring... my buddy likes the the beehive brand but i would like to know what springs would fit my car thanks
I went with the PAC 1518 springs. Same specs as the 1218s, but they are micro blasted and nitrited for higher reliability. A little more money, but I wanted a reliable spring so I don't have to mess with them again.
so is that the best to get pac 1218 or is the beehive better .. sorry i just dont know much about these springs...what heads r factory
243 heads are factory on the LS6.
"Beehive valve springs" are a style of springs with a single coil like the factory springs. There are also "double springs" where there are two springs, one sitting inside the other.
PAC is the brand. There are many brands of "beehive" springs.
Here's PAC's website. Check it out and get familiar with valve springs.