JaSSon

iTrader: (11)

Fixin to do TEA 1.5s and X1. I was reading a post on here about 987s and big cams. I think the 1.5s come with 987s so Im wondering about this and the Yella Terras with valve float. How long should the 987s hold up or should I upgrade now? I thought they good supposed to be good springs.

Brian Tooley Racing

iTrader: (13)

They are good springs, with my cam on my dyno they never floated to 7000 rpm. It sounds like the Yella Terra's have a weight problem (polar moment of inertia). Sounds like you need to run the stock rockers. You can upgrade to the 978's for $35.

Ron@Vengeance

iTrader: (51)

"polar moment of intertia"........ Is that like the moment of penetration of a polar bear???

Beast96Z

iTrader: (21)

But really, what is it? A weight problem at a givin point?

TEA Brent

ROFL