Cascade Crew

iansane · Posted: Thu May 19, 2011 8:49 am Post subject:

if you were going SBC you could clip them as well. Buuut.... Very Happy

Alphius · Posted: Thu May 19, 2011 9:02 am Post subject:

QwkTrip · Posted: Thu May 19, 2011 4:34 pm Post subject:

I flipped a header to the other side of the engine. The turbo hit the block. So I spun the turbo around 180 degrees on the mounting pad. I think it's too low to go around the fender wells.

Looking at my Camaro I wouldn't be able to have air conditioning and I'd have to lose the stock water pump. Not sure if an electric water pump would clear either.

Dewey316 · Posted: Thu May 19, 2011 4:39 pm Post subject:

What about switching headers, so it high mounts the turbo? Where they are sitting, It would likely be TIGHT with the fender, it might not drain very well unless you built a sump, but the downpipe would be easy!

What accessories are you going to be running?

QwkTrip · Posted: Thu May 19, 2011 4:41 pm Post subject:

I tried it up high first. It was far above the intake manifold. There is no way it would clear the hood.

Dewey316 · Posted: Thu May 19, 2011 4:42 pm Post subject:

QwkTrip · Posted: Sat May 21, 2011 12:51 pm Post subject:

Here is some info from the build invoice. Heads are ported and polished 317. I assumed 71 cc head chamber not knowing what else to use. I'm coming up with 9.2 compression ratio. Anybody think I made a mistake?

Eagle 4340 LS1 3.900 Crankshaft
Scat 4340 LS1 H-Beam 6.100 (0 offset)
Wiseco CA-21181-9827 LS1 27cc Pistons 4.020 Bore for .047,.047,3mm GF Rings 1.185 Comp. Height
Wiseco GF .047 Piston Rings
Misc. Parts 6.0 turbo heads ported by Greg Good
GM 6.0 MLS Head Gaskets #12589227

QwkTrip · Posted: Sat May 21, 2011 8:02 pm Post subject:

Okay, so I got a bit of an education by a guy on LS1tech.com

8.4:1 compression ratio with the following assumptions.

4.020 bore
3.9 stroke
6.100 rod
1.185 compression height
-27cc piston dish
71cc comb. chaimber
.048 gasket thickness (im pretty sure thats how thick they are)
head gasket bore 4.100
9.240 deck height

This motor is waaaaaay too low compression to ever think about running naturally aspirated. I either keep it a boost motor or sell it. I'm thinking about selling if I can trade the short block to somebody with a nice 408/427 short block.

QwkTrip · Posted: Sat May 21, 2011 8:41 pm Post subject:

What the heck.... that just can't be right. 27 cc dish???? I found the same piston p/n sold by TSP and they call it a 8 cc dish.

blue89 · Posted: Sat May 21, 2011 9:03 pm Post subject:

Put it in the bird. What is the hold up?

aaron_sK · Posted: Sun May 22, 2011 5:52 am Post subject:

Dewey316 · Posted: Sun May 22, 2011 9:11 am Post subject:

QwkTrip · Posted: Sun May 22, 2011 9:57 am Post subject:

I know. Google is fast, isn't it? Shocked

QwkTrip · Posted: Sun May 22, 2011 1:38 pm Post subject:

I found the original owner at LS1tech.com. I've been able to piece together a story now from my paperwork and his postings at the forum.

Engine was built Jan 2005. The owner was sent to Japan Jan 2006 and sold the car immediately after returning to the States in Sept 2009. The car was in military storage those years and run occasionally. In the year it was driven he put 5000 miles on the engine, mostly with a Vortech supercharger. He put the turbo kit on late 2005. He was able to drive it for a few weeks before going overseas but never got it sorted out.

The turbo system is a CAS kit that has been highly modified. Now I know what I've got. That helps.

The 12 bolt must be pretty spankin' new because he had a stock rear as far as I can tell.