L92 or LS2 Boost ???
L92 or LS2 Boost ??? I am looking to change up my combo in my 69 Camaro over this winter. I have a complete LS2 and a L92. What I'm looking to do is run a blow through Carb setup with a T76 turbo with a front mount intercooler. I will be using truck manifolds for this build. The KEY to this build is keeping the expense to the minimum. Whatever motor I end up using will have a turbo cam, matching springs ( and lifters if L92), ARP head bolts and ARP main studs as a mod. I am looking to keep everything else about the motor stock. I was thinking that 15psi should be attainable with the stock heads. I am not looking to spin the motor past 6200 rpm.
I would like to know which motor would you use ( and why) and whats the Max safe boost that it should be able to handle? Can I reuse the stock rods? Will they handle the power that a T76 @15psi can put out? Do you think that I need ARP rod bolts? Should I put aftermarket rods and pistons in it?
I would like to know which motor would you use ( and why) and whats the Max safe boost that it should be able to handle? Can I reuse the stock rods? Will they handle the power that a T76 @15psi can put out? Do you think that I need ARP rod bolts? Should I put aftermarket rods and pistons in it?
Last edited by GONEB4U; Sep 6, 2009 at 10:30 PM.
Definitely go ARP rod bolts. I "think" L92 heads flow more than LS2, so I would go with whichever flows better. As for rods and pistons, those just don't fit into a "budget" build. As far as max safe boost, my computer would blow up if I even tried to answer that loaded question. BTW, the rod bolts are much more important than main studs. Just think, 2 rod bolts vs 6 main studs, with each carrying about the same load.
Your stock pistons are more than likely going to break before anything. Hate to say it 'cause i know ill sound like a jerk, but do a search! Lots of info on stock motors + boost. Alot of people do it, most wind up exploding at some point, some much sooner than later. 550 RWHP seems to be the limit most agree on...anything past that your pretty much on borrowed time, gotta have a very safe tuneup and some luck. Of course some guys pull it off and are still rolling, but id venture to say that that statisticly isn't the norm. GOOD LUCK!
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if you keep your eyes open, there are good deals to be had on pistons and rods in the classifieds. except for the block, I've bought everything for my new engine at killer deals from the for sale section. I even bought a new set of custom lingenfelter spec je pistons for $350. on my budget, the classifieds are my main source of parts.
I agree. I will put in a set of Diamond pistons with a set of Eagle or Compustar rods. I think I will stay with my 6.0 iron block for a block foundation. I agree that the 4 sale section on tech is killer. Alot of great deals can be found. I since uped the turbo to a PT88. Now which head should I use, L92 or LS2? I'm thinking that none of these heads are going to live long behind the PT88 @15psi. What do you guys think?
I agree. I will put in a set of Diamond pistons with a set of Eagle or Compustar rods. I think I will stay with my 6.0 iron block for a block foundation. I agree that the 4 sale section on tech is killer. Alot of great deals can be found. I since uped the turbo to a PT88. Now which head should I use, L92 or LS2? I'm thinking that none of these heads are going to live long behind the PT88 @15psi. What do you guys think?
if you are going to reuse the block from the car in you sig, I would reuse the heads too.
My LQ9 stock long block lived to about 16-17 psi and then put a rod out of the side. I haven't ripped into it yet but I am pretty sure that first I broke a ring land and then I stretched or broke a rod bolt.
I've been tempted to just put in a stock LS2 that I have out of a Trailblazer SS and give it a try but I don't want any of the parts of a gauranteed meltdown to go through my nice new turbo and turn it to 
.
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