i have an itr head wth the stock valve train which i plan on using for my 600 whp turbo build. I was wondering if the stock itr dual valve springs & ret. were good enough to rev up to 9500? if not what kind will give me the best bang for my buck? I do not want to go cheap i just dont want to go all out on these parts, If it matters, I will be running stock itr cams. thanks for any help, please post links to sites that you may recommend.

 

supertech springs and retainers

Contact EARL for prices

 

you're gonna need some more seat pressure, plus the itr retainers crack if you rev them that high for too long.

 

I'm new to this site and i know this is going to sound stupid but how do i contact earl?

 

http://www.laskeyracing.com/shop/shop.htm

 

You must change your retainers as jared said, you can get crower retainers. For springs the cheapest way is to use portflow inner valve springs with your type R outers. This is good for 9500 easy. I have used this set up succesfully with toda spec B cams which have more lift and duration than the ITR that your using

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by namm &raquo;</TD></TR><TR><TD CLASS="quote">You must change your retainers as jared said, you can get crower retainers. For springs the cheapest way is to use portflow inner valve springs with your type R outers. This is good for 9500 easy. I have used this set up succesfully with toda spec B cams which have more lift and duration than the ITR that your using</TD></TR></TABLE>

so portflow inners, type r outers and crower retainers? or itr retainers?