Cleaning the parts
 

You can never be to clean cleaning everythhttp://www.nelsonracingengines.com/l...8-ls-build.jpging not only makes them proper for assembly but allows you to inspect the part for the last time before final assembly

Setting the installed heights
 

http://www.nelsonracingengines.com/l...7-ls-build.jpg
here we are setting up the installed heights the installed height is the distance between where the spring seats on the bottom of the retainer and where the spring seats on the head on the whats called the spring pad.To increase pressure or equalize pressures from spring to spring or variances in installed heights we use shims underneath the spring cups to make everything equal.

Amazing is all I can say

Flow testing the cyl head
 

The flow bench is much like a lie detector like a dyno is it measures how much air flows threw the port at given valve lifts.It has taught us huge amounts about horsepower production so we flow the heads to make sure its doing what its suppose to do these particular heads flowed 357 cfm at 650 lift on the intake and 260 cfm on the ex at 650 the ex ports on ls engines are known for being weak suck compared to there intake counter part.So there is quite a bit of work done to the exhuast side of this head.http://www.nelsonracingengines.com/l...5-ls-build.jpg

Cyl head flowing
 

finished head shot
 

Heres a shot of the head finished notice we lap each valve to its specific seat and label them .Also we use ex valves made from inconel material this material withstands much more heat then stainless and in a turbo application you need this because the cycling of the valve will cause the head to actually deform and tulip when its glowing red hot.http://www.nelsonracingengines.com/l...5-ls-build.jpg

More coming
 

Thats about it for today i'm all typed out next week all post a bunch more of the assembly and finish of them

Looks good!

how are your L92 head holding up around the 1200hp mark? any issues with head lifting? or pushing water?

Matt

fixed ! :lol: I can appreciate that, I make typos I have to fix all of the time.

Thank you Tom for the LSx walk . Super intresting!!! :bow:

Cant wait to see more!!!