Ls1manSS

Hey guys lookin for some info on these heads and boost. I have heard different things so does anyone know the truth on these heads and what they can handle. I currently have a 370 with pt88. Im lookin for 900+ hp range. I just don't see alot of big number cars runnin these heads. Seems like AFR, Dart and other big money heads are what's bein used? So any info would be very helpfull.

rotary1307cc

iTrader: (5)

if you are looking for 900whp+ then an aftermarket casting is for sure your best bet


LSAs should be better than L92s

L92s are said to move water more easily than other stock castings

or try those fancy HG's the guy is having very good luck with

Ls1manSS

Yea I've heard that about those, and thin deck. But on the LSA there supposed to be a stronger casting, is what I've read.

Ls1manSS

And correct me if im wrong but do LSAs use bigger head bolts? Thought I saw something about have to drill and tap the block for the head bolts.

tim99ws6

iTrader: (31)

LSA's use stock headbolts, LS9's require larger head bolts.

westtexasbuff

iTrader: (40)

The fastest Trailblazer SS in the world runs ported L92s on 24lbs of boost, and has been for a while now.

Ls1manSS

Thanks for clearin that up tim.

mr_biscuitz

iTrader: (22)

I run l92's and made 900rwhp, I havent had it to the track yet but its been together for about a year. No issues so far, fingers crossed.

Ls1manSS

Ported?

mr_biscuitz

iTrader: (22)

Mine were worked over by my engine builder but no cnc work done.

KissMySSo1

iTrader: (2)

what are these head gaskets you speak of?

Fb0dy0nly

iTrader: (10)

"camaroandreas" is his user name on here I think is who they are speaking of. Search for him and you will find the threads with all the info. He lives in Sweden and apparently has some top notch gaskets running 1000+hp with no water issues thus far. Tune up is VERY important as well when your knockin on the kaboom door
Let us know what you go with.

rotary1307cc

iTrader: (5)

thanks for providing the info, i am lazy