Can i Get to 360-370 RWHP with just bolt ons, ( borla, grantelli intake, x-pipe, but not headers) and LS1 edit.
or how about with all the mentioned bolt on and headers :party:

 

4 spd. or a4? Any mods now, whats your baseline.

 

MN6, price is not a concern, just want to keep the car drivable and cruisable and NA. So basically im tryiung to get there with jsut bolt ons and tuning. Right now performance mods are intake air bridge, coupler, borlas,

 

Oh yeah, no heads /cams either. If i do that i want to go all out with a procharger as well. so basically all bolt ons no internal engine mods

 

Unless you have a Z06, I would say no.
I have a Vortex, LT headers, cam, ported TB, x, pipe, exhaust, cats, and I'm barely at 375rwhp (MN6). I could probably benefit from LS1 edit tho. :D

 

:iagree:

 

:iagree:

 

You can probably get close!
Stay away from the GMAF, it didn't help me at all. I did the Vortex Ram Air, Corsa Cat back and x-pipe, throttle body bypass, 160 therm and a great LS1 edit tune and reached 350rwhp.

 

:nonod:

Maybe if its a 6-speed and really strong car to start with. but without at least a cam, dont think you will get those numbers.

 

Sorry for my ignorance, but I'm trying to learn. What is the diff between HP and RWHP? I thought that the Corvette already has 350HP stock?

 

RWHP - Rear Wheel Horse Power

There is a loss of horsepower between the engine and rear wheels. Even though the engine is rated at 350 HP only about 300 (if you're lucky) gets to the rear wheels.

 

HP is measured at the flywheel without any of the losses associated with the drivetrain. RWHP is measured on a chassis dyno and includes those losses. 350HP engines typically have 300-315 RWHP, depending on tranny type, rear end gearing, and whether it is on the high or low end of the normal variation in horsepower you see in factory engines with the same rating. Figure a 12-15% loss from HP to RWHP in a 6spd and 18-20% in an A4. So the original poster is looking to get 50-60HP gain at the rear wheels.

 

:iagree: 50-60hp at the rear wheels is a lot. And it is going to be difficult if not impossible to do that with just the ususal bolt ons, unless you include superchargers, NOS or a turbocharger.

Barring this, you would have to have a strong car to begin with and every bolt on they sell (intake, exhaust, headers, thermostats, fuel pressure regulators, wires, plugs, high flow airducts, couplers, polished throttle bodies, MAFTs, MAF sensors, and anything else you could find and then tuning) to approach it. 50-60 horses at the rear wheels would still not be a guarantee. The problem would be that a lot of the bolt on stuff being sold, does not deliver the goods for every car. By the time you spent all the money for the above you may as well have gone heads and cam.

I could be wrong, but I'd be willing to bet that this guy had a pretty strong car to start with. In other words outside the norm of what one would expect to see at the rear wheels of the typical stock C5.

BTW, take a look at this owners results. They are quite impressive and he takes the time to give a breakdown along each step.
http://forums.corvetteforum.com/zerothread?id=651249


[Modified by EB20003, 1:22 AM 10/11/2003]

 

You're not gettin' there with just the stuff you mentioned. If you're opposed to heads, cam, headers, etc. why not do gears? That way at least you'll feel a seat of the pants improvement on the street. Then you may not even care what dyno #'s are.

 

347 is pretty close, and its not that im opposed to h/c, but if im going into the motor, i want much more than 50hp

 

Hey guys, finally I get to reply to this post!!! I'm new here...names Chad. I've been waiting 3 days to get my account approved here just so I could reply to this.

Ok, yes you can get 360 rw out of bolt on's and headers. Here is why I think so. Currently I own a 03 coupe 6speed. I went to LG Motorsports and purchased their new "True Long Tube headers" (no cats). I alo purchased the Corsa Pace car exhaust systems. These are the only two mods done to my car so far. After installing we ran two dynos. First one I had 343.8 and second was 342.5 rwhp. That's about 404 at the crank (Z06 numbers :thumbs: ).

I have not got it tuned since the install of the headers. I'm sure once I did I would get another 5 hp out of it. Now add on a new throttle body, thermostat, mass flow air sensor, better air intake system (varam maybe?). These mods will get you to 360 rwhp.

I woud suggest you go with LG's headers. They are by far the best on the market currently.

Here is my dyno chart if you would like to take a look. Notice the second run (blue) I got more torque. The good ole computer system was already learning on it's second run. Man I love these cars! :)
http://www.socomclans.net/images_x/dynopic.jpg

Here is a vid of my dyno. The computer speakers will not do justice to the real sound of the Corsa Pace car exhaust. Man is it loud!!
http://www.socomclans.net/movies/dyno2.WMV

(thats my brother scratching his ****!)




[Modified by Chad954RR, 7:27 PM 10/11/2003]

 

I think you could come pretty close. I don't know if you could get that good of numbers. You could easily get there w/ a small shot of nitrous. I am thinking about going that route in a few months. Kaley

 

Welcome aboard Chad. Great numbers and I have heard a lot of good things here about LG's headers.

But a couple questions come up. Are you sure that another 5 horses can be gotten out of the headers? You may be at the max that you can get now but of course there is only one real way to know.

Your car is a 2003 as is mine. Again would a new throttle body, thermostat, MAF sensor and better intake definitely get you the other 17 horses in light of the other mods. I know what the ads say, but some ot the stuff listed has gotten some here very little if any gain. Of the above, the air intake would seem to have the greatest potential for HP gain.

From what I have read here, getting those last few horses is like trying to get those last few strokes off your golf game. The lower your handicap, the harder it is to shave strokes. Likewise, the higher your dyno nbrs, it seems the more difficult it is to get that last dozen and a half horses without doing something more involved. Also aren't those long tubes with not cats for off road use? He did mention that he wanted to keep the car "drivable and cruisable". So even if he went with headers, it would seem that no cats would be the way to go. But no cats????? Don't know if emissions would be an issue for him. I'm with you though, I think he could get close. But it would take some doing and some of it is going to depend on where he is now.




[Modified by EB20003, 4:35 AM 10/12/2003]

 

Don't doubt you got into the 340s with LGM Longtubes, but the original poster, Monster 321 did specify no headers in the 1st half of his post.


[Modified by fdxpilot, 10:24 PM 10/11/2003]

 

I haven't seen any LS1 C5 put down 350+ RWHP on this Forum with the bolt-on set up that you are specifying.

On my '00 LS1 'Vert, the motor has most of the popular bolt-ons and I'm putting down 337 RWHP and 348 RWTQ with nice smooth curves on the dyno graph. I'm running slightly FAT w/ a Custom Diablosport PCM tune, but that's OK with me. These numbers are consistent w/ about 385-390 BHP, similar RWHP to the 385 BHP rated Z06 in stock form. Next step for me is a N/A big inch motor.

Bottom line is that you'll need to do more to your motor to get the RWHP that you want. (Although the jury is still out on the new FAST intake manifold, but the rumors are that it will be an improvement over the LS6 intake, but again, this is OUTSIDE of your Specified Mods for your HP Goal.)

Mod Fever, Gotta Love it!

:lol: