2003 C5 LS1, 70k miles - After many weeks back and forward and a lot of reading I have put all this parts together to upgrade current stock engine, Any suggestion ? Thanks!


54-444-1 - XFI XE-R, XER273HR These are the Most Aggressive Lobes for All Out Applications
http://www.compperformancegroupstore...ry_Code=XFIXER

26918TI-KIT - http://www.compperformancegroupstore...Category_Code=
http://www.compperformancegroupstore...Category_Code=

3158KT - Comp Cams Hi-Tech Roller Timing Chain Sets LS1, LS6 - Adjustable
http://www.lingenfelter.com/mm5/merc...7#.UmKR4RAnXCc

REV-CL1169 - REV Stainless Steel Valves LS1, LS6 1.57 - Exhaust set of 8
http://www.lingenfelter.com/mm5/merc...=#.UtiUp7TX-HY

REV-CL1170 - REV Stainless Steel Valves LS1, LS6 2.02 - Intake set of 8
http://www.lingenfelter.com/mm5/merc...=#.UtiUXbTX-HY

LS1HGK01 - GM LS1 LS6 Head Gasket & Bolt Kit 1997 – 03 Corvette, Camaro Firebird
http://www.lingenfelter.com/mm5/merc...E#.UmKcvxAnXCc

7950-16 - Comp Cams Gen III/LS1/LS6 Pushrods 5/16 7.350"
http://www.lingenfelter.com/mm5/merc...=#.UtcNVrTX-HY

CC13702-KIT - COMP Cams LS Heavy Duty Rocker Arm Bearing Assemblies - Set of 16
http://www.lingenfelter.com/mm5/merc...h#.UtisQ024uUk

12499225 - GM LS1, LS2, LS3, LS6, LS7 Hydraulic Valve Lifters
http://www.lingenfelter.com/mm5/merc...E#.Umlpi7HD-Uk

L200135297 - GM High Volume Oil Pump Kit for LS1 LS2 LS3 LSA LQ9 GM V8
http://www.lingenfelter.com/mm5/merc...=#.UmltRrHD-Uk

 

Every time that I post a question or opinion request I get 1 maybe 2 replies or not it all, other user post some bull and they get hundreds

 

What is your end goal? What do you want your car to do? Are you doing the work yourself? Sometimes replies are a little slow, sometimes people don't know and don't want to reply.
Chris

 

I would help you if I could. Most people here don't have the expertise to help you. Nothing personal.

 

This is all I have done to the car till this moment,

Intake Vararam
GM 160 Degree Thermostat Assembly
Shift Eliminator
Exhaust System - Corsa Indy Pace Car - Quad 3.5" Pro Series Tips
Header Package - LG Pro Long Tube w/Cats & X-Pipe
Leaf Springs Front and Rear - GM Z51/Z06
GM - Z06 Sway Bars

 

I'll help you out here a bit as I've done all you're asking plus a lot more. Basically, the parts you've listed are for a simple cam change and their related parts (lifters, push rods, new oil pump, etc). Those are all fine but the question CutlassMaster asked is legit. What are you end goals? Where do you want to be. The parts you're listing might get you another 30-40hp but not much more than that. That's a fairly mild cam for spending that much $$. A good mid range cam that is proven to give good results is the TSP 224/228 cam. Lots and lots of those installed and being used by guys here.

But all this brings us back to where do you want to be when you're finished? Are you going to add other stuff to this later? Intake? Headers? New heads? etc.... list goes on and on. The plan is to figure out where you'd like to be and then work towards that goal. In my case, I was looking for 450rwhp. I did new heads, cam, intake, TB, headers, all your stuff and then some and I'm at 430 right now. Didn't quite make it all the way, but not too far off. Its definitely a fun car. I've got a couple more mods to do and I might get there yet. The stock LS1 engine puts out about 300rwhp. With your stuff you'll be at 330-340ish. (Guessing of course). Its a nice seat of the pants upgrade but is that where you want to be? Let us know and we'll see if we can be of some help.

After I posted this, I see you just posted some more info. Since you do have the headers already, you can up that rwhp by another 20-25rwhp. I'd personally get a little bit bigger cam, but thats just me. You'll be seeing some gain but I'd rather see more. BTW, have you already done any dyno pulls on your car to see where you're at?

 

I do not really want to be the fastest but having strong fast engine makes me feel comfortable, I did like the LPE GT1-1 better than the GT2-3 but after some reading I figured out that I may end up changing valve spring and other component every 15k-25k miles ? The LPE GT1-1 or LPE GT11 would be my cam of choice because the sound and the aggressive but I'm not doing the repairs myself and having the shop replace damage parts can be costly.

This should be my last upgrade to the car and not adding no intake, and no heads, this become something addictive that never ends. I mention the oil pump because is part of any rebuild including all A/C belts also moving from Shocks F55 to Z06 to avoid the replace of the F55 shock when it brakes. If I was happy with stock C5 with this mods I may feel a little better but if you can confirm that going with a bigger cam will not get me into bigger problems I can also upgrade the valve springs to double valve springs for extra relialibity

 

While there are a lot of folks on here that have done some great mods, unless you are doing the SAME mods, it's hard to say. Whoever you are having do the engine work should be able to go over options with you based on where you want to be in the end.

But even 2 cars with the exact same mods will often yield different results.

 

I did not see a new harmonic balancer/pulley on your list. A known weak area. At 3500 rpm the motor is Just waking up,,,, No reason to limit yourself there especially if installing a larger camshaft! Good luck with this, where are you taking it? I have heard good things about Horsepower Sales and Lashway Motorsports looks like a good operation. look for a supporting vendor, or someone who does Vettes/LSX mostly.

 

 

I want to thanks everybody here for their support, next time I get a Z06 and not a coupe.

Thank you all!

 

new GM harmonic balancer/pulley was added to the list but not a aftermarket like ATI or SLP.......Instead I replaced the other pulley with the COMP CAM Billet Belt Tensioner, part: 54021

 

So now after 2 1/2 years how is it running and which mods were completed? Horsepower and track times?

 

Not all of us on here are engine building experts. You would get better response in the tech forum. This forum is for "whats the best sounding exhaust" "I like your wheels" area of the forum

 

What???? You mean those people that kept telling me to take off the BSMs are not experts????

 

Depends on who you ask

 

Have you considered a crate motor? There are some VERY cool options out there. LS-6, LS-9?

 

not trying to steal your thread, but is it possible to hit 500-550 with 14x,xxx miles? what should be done first for the reliability of the motor?

 

Don't forget all the cup holder controversies.

 

Sure, it's into consideration until I need a new engine, my next crate motor will be the LSX454R