zmonster

Has anyone compiled an extensive list of engine and exhaust modifications that will increase stock C6 horsepower, short of installing a Supercharger or Turbo, and the cost and HP increase for each? Just curious, I think that would be an interesting discussion.

Raazor

cam tune headers cai etc... guys are picking up about an extra 50-75rwhp.

BornSUPERCHARGED

250 shot of NoS

C6FirstVette

Sure... went with Lingenfelter and wanted the following:
-keep as a 366 ci engine (LS2 6.0L)
-no blower (SC or Turbo)
-no super cam which would cause erratic idle or other funky engine characteristics
-no hp or torque that would blow my drive train to hell

Well, after Lingenfelter did their work I got what I wanted...then I delivered my C6 to a very high end Corvette tuner (Tony's Corvette in Maryland) and had a dyno tune done (took entire day and well worth it!)

Corsa Sport with a BB X mid pipe..no headers (In Virginia with emissions inspections is chancy even with sport cats)

Results: 465 whp and 455 wt

Add headers and you add about 20% to both numbers

Crank HP/torque...play what ever numbers you want +10% or +15% and you get the idea

Michael

peter pan

The above example is a great non FI way to go

LTC Z06

Why didn't you get Lingenfelter to tune it?

cthusker

I'd like to see the dnyo sheet on that engine.. if you happen to have one around!!

FrankTank

neveroffline

What exactly did lingenfelter do? Corsa sport and mid pipe for 466rw? wha?

Raazor

haven't seen that package on their website.

coolhand5599

I too would like to see that.

Raazor

Lingenfelter does a dyno before and after on each car. I've been there and visited with the Sales Manager, Tim Dyer and seen cars on the dyno out back. He should have a graph he can post.

Vette5.5

Don't know, but remember buying an 98' Z-28 Camaro, bolting on a centrifugal supercharger kit and seeing thing's get smaller in the rear view. Still ran like stock smoothness, emission's and fuel milage without having to crack the motor. Plenty of non F.I. performance option's out there, but usually carry their share of low rpm penalties. Have an LS-7 now and plenty happy, but would do bolt on F.I again, rather than really ripping into thing's.

DaytonaFIC6

Generally a heads, cam, intake set up should net you very good results depending on specific parts, ie bigger cam and better heads will make more power. Here is a list like you asked:

LT headers and x pipe: $1,200-$1,500
cam package that includes camshaft, chromoly pushrods, and valve springs: $800-$900
FAST intake manifold and throttle body: $1200
Cold Air Intake: $400
catback exhaust: $1500
60lb/hr fuel injectors: $400
Upgraded clutch/flywheel: $900
full custom dyno tune: $400

All of this comes out to about $7200 for about 475-500rwhp without any modification in the heads. Add about $2500 for a good set of heads that net you about 50 more rwhp. Comes out about ten grand for a solid H/C/I setup. Obviously this is for just about everything you will ever do to a stock displacement all motor setup and is probably the most money you will ever possibly spend. Don't forget about all the little things such as pulleys, spark plugs, gasekts, bolts etc that can add up quick. Also, you could go cam and headers only without the intake manifold or catback and save some money or just bolt ons but the power increases won't be as much.

neveroffline

Extraordinary Claims require Extraordinary Evidence. Carl Sagan...

What exactly did Lingenfelter do? I guess we will never know.

neveroffline

wait you said:

"Sure... went with Lingenfelter and wanted the following:
-keep as a 366 ci engine (LS2 6.0L)
-no blower (SC or Turbo)
-no super cam which would cause erratic idle or other funky engine characteristics
-no hp or torque that would blow my drive train to hell
"

Lingenfelter isn't going to touch this, or maybe they will and your vette stock was so much better than 99.999% of the other C6's of your year and model that they will chime in. I doubt it.

What exactly are you saying they did, besides a "Corsa Sport" install and a "Mid Pipe"? LOL

Jim_H

20%, no way, maybe 20 rwhp and 20 rwtq. Those numbers are pretty high, especially your Tq number for stock LS2 heads, I'd also like to hear what majic was done.

C6FirstVette

Wow...this became a confusion...

I took delivery of my C6 in Nov 2004 and in April, 2005 sent it to Lingenfelter. At THAT time the LS2 engine was fairly new to tuners and so Lingenfelter folks were looking at cams and tuning in addition to their other upgrades for the 366/500hp package>>>
http://lingenfelter.com/engine-packa...cid-ls2-500-hp

My requirement on the cam was as stated so they went with their GT7 cam. You can see all the other work they did including port/polish hi flow heads. At that time (don't know if that is still true today) they would not install headers due to their wanting their engines to be 50 state emission compliant. By the time Lingenfelter got my car I had already installed the BB X mid pipe and the Corsa Sport exhaust.
The C6 was returned to me on May 3, 2005 (remember date well since the warranty started then and yes the excitement of having a Lingenfelter engine package).

To the question about tuning...yes Lingenfelter did do their ECU program, but I would call that tune a 'semi custom tune' in that there was no specific custom tuning for each individual C6 receiving the 366 package..maybe that is different now.

The Northern Virginia Corvette Club had a dyno day at Tony's Corvette..here is there really nice dyno set up>>




After my C6 was dyno'd Keith (turner supreme at Tony's C) approached me and basically said 'I can more out of the engine...have tuned Lingenfelter cars and have gotten more out of them' So why not and sent my C6 for a one day dyno custom tune... and yes more was obtained...about 30 hp and equal amount of torque.

Of course, dyno testing has such variables not even allowing for weather conditions (heat/humidity), that one day I have seen my Vette at 435 hp and next time at 465 hp...really makes do difference to me as long as I achieved my targeted numbers of over 500 hp. Actually, my numbers are rather mild compared to what some have posted with tune/engine mods.

Hope this clears up questions
Michael

JoesC5

Buy a LSx454 crate engine for $9,300 and put a LS7 intake and exhaust manifolds on it, along with the rest of the Z06 exhaust system. You will have a cast iron block, 454 cu in,forged crank, forged rods, and forged pistons with a decent cam. 620 horses at the flywheel(est 545 at the rear wheels). A bullet proof engine with a GM 24 month/24,000 mile warranty, that can handle 2050 horsepower, if you decide to go all out at a later date.

The LSx454 weighs 118 pounds more then the LS7 engine which weighs 10 pounds more then the LS3 engine, but you would get almost that much increased weight if you added a Maggie with the heat exchanger, etc.

Then, after the LSx454 installation, you still have your old engine to make into a planter or coffee table, or store in the back of the garage to put back in the car, or sell your old engine to recoup some of the cost of the new LSx454.

zmonster

Yes, I have heard that suggestion in another thread. I like the idea. Having a naturally aspirated, non-modified engine that puts out 620HP is probably better in the long run that going with FI, or engine mods on the standard LS3, because you get the warranty and the ability to sell your original LS3 engine. A very good thought indeed.