I am looking into installing a cam, heads, headers, and possible
intake on my '01 Z. my goal is to obtain 480 to 500 rwhp.
which way to go?
1) heads -AFR205 or trick flow LS1

2) headers ( i want hi flow cats w/X pipe)
kooks - LG - melrose

3) cam ( i want little or no cam surge)
G5X3 or G5X2 LG cam

4) intake (leave the ls6 on, fast 90/90 system or wilson sheet
metal intake

thanks for any input
Ed

 

It will still be difficult to push that much out of the motor with just those mods...I'm guess more like 450rwhp or in range at best and with that you'll have to put a large cam in

 

Well, this is untrue. I don't even have the FAST on yet, or the tune right, and I got 450, and almost 430 tq. This is with a pretty small cam, BTW.

 

Which crane cam are you running?

 

Ed,
Great winter work brother!!! You will find that the numbers you want can be done, but every little gain will be needed to get to that level. There have been several mags that went for 500rwhp on a 346, and it is a very lofty goal.
1. AFRs are great heads and many guys make great numbers with them on a smaller cam. Regardless, I sugest you go with a combo from some one, so the heads and the cam are matched to get what your needs are (like LGs AFRs and a G5X4 on a 112, BIG BIG CAM, big top end... 470ish maybe with pully and all the bolt ons...).
2. Lgs are awesome and I have heard lots of good things with kooks. great start
3. Nice cams, but you will need a great tune to keep it tame at idle with out the surge. It's all in the tune, and for your goals, you are probably going to need a very big cam and your idle will be a challange depending on the tune.
4. The LS6 is very good IMO, and I must admit I gained harldy anything with a FAST 90. I still need some dyno time with the NW90 to see if it gained over a stock LS2, BUT, if yuo are going that route, get it ported by Tony M. A bud went that route on his 402 and it is art what he does to an intake. Huge gains down low, which might allow you to get the ilde and lack of surge you want, plus give you an additional 10-15 rwhp.
Good luck, sounds like a great project
Dave

 

And your arguing with my statement? Fast Intake doesn't give you 50 more hp and nor will a larger cam...I said in the 450 range meaning not 500

 

This retarded car made 515hp and 444 ft lbs of torque with LTs, Fast 90, stock TB,Stainless Works Exhaust, G5X3 cam and OUT OF THE BOX! AFR 205 heads. BTW the car will do 165 in 4th gear. 0-60 was in 3.1 secs spinning thru 1st.

http://video.google.com/videoplay?do...05952378&hl=en

http://video.google.com/videoplay?do...79261104&hl=en
__________________
found this at www.nkyfba.com

 

I'm not saying that with the mods you have planned you can't get there. I'm just saying it's a stretch but you haven't said what else you have done...I am assuming (hate that word) that everything else is stock. I have seen hp ranges from 440rwhp to 525rwhp being achieved with heads and cam packages.

I hope you do get it with those parts. I've had 3 modified C5's that have ranged from 425rwhp to 720rwhp. The parts you have chosen are probably the ones that will get you there and dyno runs can be pushed to extremes and usually are. They tend to run racing gas and lean the car out to get the most out of the motor, cut the AC belt off (yes I've done that ) plus not all dynos are same and tend to not be as accurate some.

Keep us updated and personally those are the mods that I would chose if I was trying to get the most out of the motor (maybe look at these Patriot heads everyone is talking about too). Also, look in to these if you don't all ready have them: a ported oil pump, under drive pullies, good plugs and wires, larger injectors.

 

It's one of their "Z" series, and the specs are 228/232 @112+5, with .600/.600 lift. Very light lope at 825 rpms.

 

I can't see that vid, but is that 515/444 to the wheels or at the crank? I can almost gurantee that it won't get 515 RWHP from a G5X3/AFR 205 on a stock 346. And doing 165 in 4th just means he probably has a M6 instead of a M12. I can slap on a 2.8x diff on a M6 and I'll get a higher top speed in 4th but it'll just take longer for me to get there.

As for your original question. I will say it's almost next to impossible to get 500rwhp from a 346 WITHOUT any or little cam surge.

 

Well, yeah, I'm arguing with your original statement, because it's false. Here it is.....

It will still be difficult to push that much out of the motor with just those mods...I'm guess more like 450rwhp or in range at best and with that you'll have to put a large cam in


I have a fairly small cam, and no Meziere, or FAST, or even ported LS6 setup. I wouldn't expect 50 add'l HP from all these things, and a good tune, but it should be close even without changing cams. You say 450 or "range" whatever that means, "at best". I simply say this isn't true.

 

I have a very similar combo to what you are asking about running. I have AFR 205's that were slightly milled, an LG G5X4 cam (flycut pistons), LG Pro headers with X-pipe and a FAST 90/Ported LS2 TB. My car, through a 3.90 gear (which will read a little lower on the dyno) put down 475 rwhp. I have had the car tuned and then a touch up tune done again. There is still cam surge down low...this is a big cam! The car is not intolerable, but be prepared for an uncivilized idle (which sounds awesome) and a little low RPM surge. It doesn't seem to matter when you hammer it and the car spins the tires all the way through first, all the way through second, and rips 'em into third. Good luck with your project.

 

Here you go! Good luck and keep us posted
http://forums.corvetteforum.com/show....php?t=1523129

 

thanks for all the input

 

Hi Ed -

Interesting -

Here is a link to a vid on the LG site of a C5 Z06 with:

LG Pros/x-pipe etc
AFR 205's
G5X3
Fast 90/LS2 TB
Custom LG exhaust
510 claimed bhp.

http://www.lgmracing.com/clarkszo6.wmv

I have been looking at this pretty hard lately - I already have the headers and would keep my Ti catback....I imagine you would upgrade the clutch and output shafts and some other details to support his kind of hp.

best regards -

mqqn