Bob@BruteSpeed

iTrader: (16)

It should without any problems. Back at the old shop we built a customers 2004 Corvette engine in which he had a D-1SC on it. We used Compstar rods, Diamond pistons, Total Seal rings, Lingenfelter GT2-3 cam and Patriot Stage 2 heads. It made 740 rwhp with his shorty emission headers and stock cats. He had to make sure it passed emissions in his state. With a larger cam and a better exhaust system it would of made more power. Anyway, he drove this combination hard for two years on a 2.1 mile road course practicing and did not have any problems with the engine. We had it set up with methanol injection and we had an engine oil cooler on it. Bob

TermnEatr

iTrader: (24)

Iron block, diamond pistons, stock crank, k1 rods, ls6 intake and ls9 gaskets.

bmech211

LOL Oh Yeah.. I'm a motorboatin' SOB!!!

My budget set-up for twin 76's in the work:
- Stock 5.3 LY5 with the exception of 5.3 Wiseco's and ARP rod bolts
- Stock 317 heads with 1.6 exhaust valves
- Additional machine work for o-ringing block and pinning mains
- DM Performance main girdle (not necessary on iron block)
- Stock graphite gaskets
- DIY internal engine coatings

I know it's not necessarily low cost but "budget" can be used so loosely when building up an LS motor. Well, at least it does for me compared to my other options of building another 2JZ or my 1UZ. Plus, I do a lot of my own fabrication work so I guess that could be considered "building-on-a -budget".

Sarg

iTrader: (6)

Ok, I will bite since no one else has...why not an iron block (or aluminum) 5.3 with some head work, some arp goodness, a cam, intake and your turbo of choice. I know it is an overplayed reference, but Skinnies has done this combo more than once I believe.

hellbents10

iTrader: (10)

Anything you push past the limits of the stock rods will lift the stock casting heads anyhow. I do not see the point in good rods and pistons if you are not going to put a decent casting on it. You will get away with it for a while but if you make 100 passes you will feel the pain of moving water and eventually damaging your cylinder heads.

bmech211

I was told that o-ringing would help this problem and added that $$ into the build, but would it be more beneficial to have additional head bolt tabs welded in instead?

westtexasbuff

iTrader: (40)

o-ringing is not needed at the OP's 800whp goal.

I haven't seen anyone being able to weld tabs for a 6 bolt conversion on the cast iron block, on aluminum it's easy. (but again, not needed for 800whp)

hellbents10

iTrader: (10)

What is needed is better heads then 317s. Real 800rwhp will move water with 317s, unless its 800rwhp on a happy dyno....see a lot of that lately though. Real 800rwhp through an auto is a 150mph car at 3600lbs. 150mph cars move water with stock casting heads period. It would be a waste of money to o-ring 317s.

headed-ws6

iTrader: (34)

I will be shooting for 800rwhp soon and I will be using LSA heads. They are made of stronger T-6 alloy which should help keep them down longer then 317's or any other stock cast head besides a LS9 head.

lmt0705

iTrader: (7)

stock crank will be good all day, im a fan of diamond pistons, and compstar rods. make sure you have very good rod bolts in whatever you get. (arp 2000 good choice)

g'sturboss

iTrader: (1)

Would a 370 max out a T6 gt47-88 ?

LS6427

iTrader: (2)

I was gonna ask if a 78mm on a 370ci will easily make 800 RWHP????

If not, what the next size up that will...without pushing the turbo to the max.

.

headed-ws6

iTrader: (34)

Id go with an st80 or similar to that 78mm would be pushing it pretty hard at 800rwhp

LosLs1's

iTrader: (21)

Sorry not... high jacking the thread but i have a similar build going on with an lq4 and I'm running a turbonetics t76 with .96a/r shooting for 700rwhp is the the turbo going to run out of steam???

7second

iTrader: (1)

I'm debating whether to build my ls3 for turbo and save $ or build a lsx and sell my ls3

bmech211

So what I'm unclear on is the root cause of pushing water. Are the heads lifting due to higher cylinder pressures or is the actual deck deflecting? If it's deflecting then I totally understand the necessity for either running lower boost or getting aftermarket heads.

Sarg

iTrader: (6)

And another question would be, is skinnies car pushing water at 800 hp and 8.6x second 1/4 mile? If not, what is he doing to prevent this?

Bob@BruteSpeed

iTrader: (16)

The heads are lifting due to being four bolt per cylinder, thicker deck heads help with this problem to an extent. An engine with a turbo can handle a little more boost than one with a blower, due to the blower using up more power than the turbo would, before the heads start lifting. Bob

LS6427

iTrader: (2)

I don't know why builders just don't run a bead of weld all the way around the head and block after its bolted down.......

lol......j/k......

.

WS6HUMMER

iTrader: (19)

What about the 5.3L aluminum block? I read a post where someone said the 5.3's could hold more boost than an LS1, I'd like to know how/why?