I will upgread my valvetrain and I have stock head
Will these parts #suitable for 306
63-987-16 Comp Cams 1.430" Diameter Double Valve Spring

63-740-16 Comp Cams 10 Degree Steel Retainers for Comp #987 Valvespring.

63-4771-16 Comp Cams Spring Locator Seats for Comp #987 Valvespring

63-613-16 Comp Cams 11/32 10 Degree Machine Steel Locks, set of 16

63-7808-16 Comp Cams Hi-Energy hardened pushrods, 7.200 (OEM Roller - Factory Length)
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I think so. You'll need non-self aligning rockers and guideplates with those 10* locks/retainers. Your 94 already has hardened pushrods from the factory.

 

could u give me the part # from ThunderRacing? so I don't need to buy pushrod hardend?

 

No, 94's got hardened pushrods from the factory.

Look up jegs or summit or anything. Just do a search for comp cams or any brand you want. http://www.jegs.com/webapp/wcs/store...0233&langId=-1

 

So I buy pushrod?

 

My 94 sure had them.

 

You might want to do a bit more research on the 987 springs. Seems some people had problems with the inner spring hitting the valve seals. I see you added the locators which will help, but for the price of the locators + 987 springs, why not just go with the 918 conical beehive springs?

Post #20 in This Thread details the differences between the 987s and 918s. Basically, the bind rate and lift capacity are the same, but the 918s are single coil (no inner spring to interfier with the seal) and they also have a lower open pressure (good for lifter life).

Oh, and aren't the factory hardened pushrods a 3-piece pushrod? If so, I would definitely recommend purchasing some new one piece hardened ones ... it's a cheap $30 insurance policy if nothing else.

Thomas.