View Single Post
Old 09-27-2013   #40
XfireZ51
 
Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,686
Default Re: So...How much does it cost to build a 380 cube ZR1?

Quote:
Originally Posted by 5ABI VT View Post
Awesome info Hopefully Ill be treading down this path in the relatively near future.

What options are there for cams? are custom grinds available? Im tempted to want to do something like my LT4 build.. all lightweight, maxilite rods, hollow valves , solid roller etc.

Im thinking offset grind, longer rod, aggressive cams, hollow valves, solid lifter setup and rpm it a bit more for more hp. Not sure how the lifter setup is on the LT5. The s54 in my e46 M3 had a rocker setup that was easy to maintain lash with via swapping shims.
I think the question to ask yourself is , what power level do you want to get to? Again, you may be comparing apples to oranges looking towards the LT4 as a guide. Achievable power with few and simple mods to LT5 is rather impressive. No rockers in LT5, tappets directly actuated by cam lobes.

500+chp w just porting through to the heads, stock cams, headers and exhaust

550chp doable w stock displacement and bottom end. Add Pete cams.

Look at tpepmeir's 427 build for 700+chp and lots of choices in between and up to 441CID.
XfireZ51 is offline   Reply With Quote