heres the Q, I know stock redline is 8200, BUT will the factory valvesprings safely take 8500? The engine is in very good running condition. I am not going to rev this bish up to 9 like some but w the ctr cams I'm going to probably want to shift around 8400-8500 w/ my current setup. What do ya'll think?

 

If your gonna go over 8300 get new springs and retainers.

 

I was told by my machine shop not to get aftermarket springs for stock cams because it causes them to wear out faster. If I were you, I'd look into getting some Type-R springs and some titanium retainers.

Can't hurt right?

 

as stated just upgrade to the itr valve train..im my opion its fines.. also sdo you have the itr intake manifold and tbody? also do you plan on dynoing your car? we just dynoed a b20 vtec..eagle rods, je pistions at 12.0 comp..b16 head..stock intake mani and tbody with ctr cams..and the power peeked at 7800..so just shifting at 8200 would probably be optimal..best bet is to get it dynoed after and see where peak power is and then determine.

 

What did the B20 Vtec dyno at?