I have. An Incon TT Formula M6. Stock motor, with a built fuel system, tuning, at 7.5psi. SPEC stage 3, 3.73 12 bolt, 11.5 ET streets.
11.23 @ 124.xxmph

 

OK..a little background..

I've rebuilt engines before..

I'm not a newbie, and I understand everything that you've said.

Perhaps I haven't communicated exactly what I am talking about: real world, supercharged LS1 performance. I'm dissing it. I'm not talking about a "maxed out" setup necessarily. What I've seen from blown LS1s are decent dyno #s and bad runs at the track. It doesn't seem like an efficient use of power. I got the impression that the setup wasn't that great..for whatever reason..good peak #s, but not a great area under the curve. If you're making 4XX hp, you should run an ET/MPH commensurate with that..regardless of tuning...unless that 4XX is just a high peak #.

Now, given that an SC curve is shaped like an NA curve, I'm probably wrong. I've been prejudiced against blowers because of what I've seen. I checked the LS1.com top 100..there are a few blower setups on there that are running OK with head work. Many people only list dyno #s in their sigs, without an ET or MPH. Is that 6,000 for the blower kit really worth it?

 

ummm! That Incon setup is bad ***. I would love that..is the owner selling it?

Wasn't there a big scandal..didn't a bunch of people get ripped off? Only a few people ended up with a kit..

I'm talking about blown, not simply boosted. I've always known that turbo cars are top dogs. But these belt-driven kits that are out for the LS1?

 

I went through this same decision a few months ago. After really sitting down and researching all the boards, as well as talking to some shops and vendors, I decided to go with the heads/cam setup. The reasons the blowers turned me off were the many problems I've heard users complain about. Slipping belts, leaks, tubing/hose issues, difficult installs, hard to tune and keep in tune, grenading blower head-units and inconsisitent performance. I also don't like the added weight over the front end. There are some people who have had great luck with the blowers and I'm sure they will chime in, but IMO they aren't the way to go. Heads/cam packages are proven performers that can be installed and forgotten about (except for the springs) and, in most cases, are very streetable. If you hear the argument that blowers can just "up the boost", take it with a grain of salt and remember that you can also add a little shot of spray. Anyways, just my opinion and good luck. Ben

 

Its a compromise.. Everything is...

The SC will add weight but I removed a lot removing the AIR and all the other stuff that I could...

Tunning... It has not been easy...
Slipping belts... Cogs and they look awesome...
Inconsistent power... Not really sure... Pretty consistent once the system has stabilized... Temp wise if you dont have aftercooler...

I dont think that 6k is really worth it... and on stock pistons.. neither.. if you are going to do the system.. do it complete and right forge all you can and then add the blower... if not go with the H/C package...

Turbos are getting cheaper and better installs and stuff... Might want to look and check...

 

Highlander: I don't doubt what you have said and appreciate your honesty. I would look at a tubo set-up first as well, but only after building a "bulletproof" bottom-end. Is your blower on the 94Z listed in your sig? Again, I am not bashing blowers in any way, just giving my opinion and hoping to see all angles of the equation.

 

It's possible... w/ good tuning and all.

FYI... we installed that TR230 cam in a friend's car on Saturday... that's one nasty-sounding cam Of course the cam turned out to actually have a 110.2 lsa even though it's specs are 111, so that might be part of it.

But just remember, you'll need more then just those things. Headers, cat-back, pulley, 12 bolt rear, some chassis stiffening stuff, etc.

 

Best of everything: about 7 liters of NA displacement (42x) with a resleeved and stroked LS1 block.. or a C5R block with ported heads..

Get a mild setup with a mountian of tq on the lowend, probably approaching 500 rwhp near the top, with near stock reliability and manners.. Then have a 200 shot in case you really need more...

And if you want, it could be almost impossible to tell anything was done by looking under the hood since most of the changes are internal.



EDIT: oops, not quite stock block. lol

 

Chris LS1 Bird,

If you want a quiet setup, then you are going to need some LS6 heads and the Thunder Racing "Old Man Cam."

Old Man Cam

Dyno Graph

Give Paul or Angie a call, by far the best people in the LS1 industry to get advice from on your ideal setup.

Also, if you want a quiet exhaust, don't get the Corsa. It changes totally with longtubes, and heads/cam setups. Still quiet on the inside but it is pretty loud. Go to www.derty.com and check out his videos of his heads/cam Corsa setup. Badass car!

Good luck and PM/IM me if I can help you any further.

 

Excellent point! You posted as i was writing mine.

More cubes with a smaller cam behaves so nicely. I forgot all about it.

 

Yes I have it on my car... it run's ok.. I still have tunning issues because it needs more fuel.. today I will resolve it with 50# inj... We will see

I would go with the 427 any day...

 

LOL! yeah..that sounds good. I'll add a C5R block to my "cart" on thunder's website..hold on..

heck..let's make it 427s for everyone! This round's on me, fellas! "For he's a jolly good fellow..."

I would love a turbo setup..but I have to go back to the reliability and emissions problems. That would fail a visual inspection, I'm pretty sure. The emissions hardware would be gone. Turbo: $8000 installed and tuned..blown stock engine in short time. Solid low 11s, with a 12 bolt.

slvr: thanks for chiming in. www.derty.com redirects me to a registration site. If the Corsa gets nasty, can you recommend a quiet exhaust? How's the spintech muffler sound?

I had a look at that old man cam..power is important enough to me that I can deal with some ticking. The setup doesn't have to be stealth..I suppose there are degrees of obnoxiousness. I feel that a cam like the CC306 in my brother's LT1 is a fine size for a daily driver. He's running 11.5:1 compression, and that cam is 230 / 244, .510 / .540 on a 112 LSA. I actually think that lift is listed on 1.5 roller rockers, and he's using 1.6s..so that's a pretty big cam. Of course, the LS1 engine is different and may behave differently with duration #s like those.

I really wonder how much you can quiet down a setup like this with cats and the right exhaust.