I was thinkin when going with a radical hydro cam it can start to get xpensive when usin the yt rockers, comp lifters and etc.

At what point does it does it become cost effect to go solid? Even if it cost a little more the advantages might make it worthwhile. Especially if the lsx intake is tuned for high rpms.

 

Since I sell Comp's stuff I figured this out for myself. With rocker arms, cam, timing chain, lifters, pushrods, springs, Ti Retainers, spring seats, locks etc..... It's about $2K for all of that. Plus you need to do heads that work with the Solid Roller setup.

Bret

 

Thats kinda pricy.

 

Why do you need a new timing chain when going solid roller? Or spring seats? Or locks? I'm thinking about solid roller too, but when I priced it I just looked at cam, springs, retainers, and rocker arms. I was under $1000.

 

You forgot to add $400 for solid lifters, 5/8 pushrods, machine work for the heads, and adjustable rockers are around $700 to $850 dollars.

 

Well if you run enough spring pressure, like on a solid roller the last thing you need pounding the aluminum on the cylinder head is the bottom of the spring. If I'm gonna do it I want the adjustabel timin chain so I can make sure I have the cam installed EXACTLY where I want it.

Bret

 

good points, but it's gonna run roughly 2k reguardless.

 

if you have to ask, u can't afford it

 

Why do you need 5/8 pushrods (why can't you stick with 5/16)?

 

I would bet that 5/8 is a typo. I'm running 3/8 in mine. We're running a fairly high spring pressure, so the stiffer / thicker the pushrod, the better. My springs aren't super-stiff tho. Thanks to Geoff's time on the spintron, he came up with a valvetrain profile that works well together.

Adjustable rockers, pushrods, springs / retainers / locks, lifters, and cam would be the minimum hard parts. Then add on machining the heads, having the springs properly set up and measured, opening the pushrod holes (or some grinder time on your own), etc.

Not cheap, but 7500 RPM sure is fun.

Andrew

 

what lifters did you go with (what company and part number if you know it) and what length pushrod did you use?