Valve spring ?

[GNONYX]

Morels are the quieter of the two. The still have to be set up with the correct length pushrods to work correctly and quiet.. The length will be different than the ones used on the comps as the lifter cups are at a different height.

Hi Earl,
with that statement then one will have to get the pushrods as well, being you cannot use the original pushrods

Also what would you recommend using which product:
http://johncalliesinc.com/morel_products.php
or
http://www.taperformance.com/categories.asp?cat=163

Thanks

 

[87-WE2]

Comp 980s and comp 979s are valve springs. They should not make any noise unless something's wrong.

Comp cams lifters on the other hand have a reputation for being noisy. The folks at morel were kind enough to make us some lifters that wouldn't cause our knock sensors to ape$hit.