So I've heard L92 heads have somewhat of a thin deck and aren't ideal for big horsepower.
I'm planning to mill them for increased compression and get close to 500rwhp NA which people have done no problem.

But will these milled heads be safe to push this thing into the 600 to 650+whp area with spray? Maybe a progressive controller to tone down the cyl pressure spike?

Anyone with experience spraying milled L92 heads here? It sure would be appreciated to hear from you.



BTW I did countless searches and couldn't find the answer to this question specifically. So I was trying to decide if this should go in the gen iv section or the nitrous section... but I think the topic is more specific to the limitations of the L92 heads so here I am!

 

hi so nobody has any input on this?

 

Call WS6store. He might help you.

 

From what I understand they are the same as LS3 heads minus the lightweight valves. And people push those heads way higher than 600

You didn't find any info on it because it's not a real problem would be my guess. I have never heard of L92 or LS3 heads being thin decked, or any OE LS head for that matter. Not saying it's impossible, but being on here everyday I'm sure it would be all over the boards and would have heard about it 50 times by now. News like that travels fast.

spray the dog **** out of it

 

Thanks to both of you for your responses! I am running full bolt ons and a NX 150 shot + nano in a 6.0L, never been dyno'd or quartered but I'm guessing it's around 520+ rwhp currently. As I said I am after 500+ rwhp NA and then lean on it with nitrous. Start back on a 100 shot and work my way up to probably to 200 and hope the thing holds with my amateur tuning haha.

 

Should be fine, I would open up the ring gaps a little to keep them from butting and cracking a ring land.