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Pampered-Z · 01-06-2009, 11:13 AM

You are going to need hardened pushrods for the guide plates, so you will want to upgrade. Stock are hardened, but aftermarket will be stronger.

Becuase of the cam lift ( near 600) you are limited in spring selection. The springs need to handle that lift and also have the proper seat pressure, I'd go with something better then stock. And the spring retainers are going to determine the type of rocker you need. To my knowledge the beehives are the only springs that will work without machining the heads.

01-06-2009, 11:13 AM	#8
Pampered-Z Sliderule / Moderator Join Date: Oct 2004 Location: Catawissa PA Posts: 2,294 iTrader: (1)	You are going to need hardened pushrods for the guide plates, so you will want to upgrade. Stock are hardened, but aftermarket will be stronger. Becuase of the cam lift ( near 600) you are limited in spring selection. The springs need to handle that lift and also have the proper seat pressure, I'd go with something better then stock. And the spring retainers are going to determine the type of rocker you need. To my knowledge the beehives are the only springs that will work without machining the heads. __________________ 93Z M6 Black: The 385 Lives! Supercharged, 3-core front mount intercooler, GTP heads, 3:73's, Street twin clutch, Jethot Longtubes, Mufflex 4" catback/spintech, S+W cage, Spohn Suspenion, Yada Yada Yada 1) Build it 2) Race it 3) Break it 4) Repeat!!!