First, I know I've seen this posted before but I can't find it. My brain hurts from all the reading and searching I've just done.

Now on to my question. I was thinking about doing a heads and cam swap on my 01 and was looking at all those "what cam should I get" posts and didn't really find what I was looking for. I want an sleeper of a Camaro. I want to put down like 400 hp and sound close to a stock Z28 with intake and exhaust. I was thinking that the c5 Z06 had some 405 ponies and doesn't really rumble any different than the ls1 and runs just fine on pump gas. But makes much more power. If I were to get my hands on a complete set of Z06 heads, cam, pushrods, plus the tuning it would need would my ls1 then be a duplicate of a LS6 minus the small difference between the two blocks?

Thanks.

 

I'm doing a similar thing. I warped my block and I'm swapping it with an LS6 block with LS6 stage II heads, a cam, pistons, pushrods, and headers.

I wouldn't call the block differences small. As far as I know the different designs allow the LS6 to have a lot less drag on the crank. I think there's a bigger difference (improvement) on the block than there is on the heads.

I may be wrong.

 

Since you have an 01' you already have a LS6 block and intake. You will realize about a 50 RWHP gain maybe more. I have 335 RWHP with just exhaust and intake mods, that works out to about 408 SAE NET hp. Adding 50 RWHP would put me at 385 RWHP = 469 SAE NET hp. I have yet to see a ZO6 dyno at less than 365 RWHP stock = 445 SAE NET hp.

 

only like 10-15% of 01's had the ls6 block...all had intake first of all, but onto his question, the z06's make 405 crank horsepower, so make sure you take that into account, you may want to consider an MTI stealth cam or something similar, which is larger than a z06 cam but still sounds stock due to the high LSA.

 

huh? Go over to the z06 site you'll see a ton...Ive yet to see one dyno that high

 

I took into consideration the loss of around 15% (probably a high side estimate) through the automatic drivetrain which would put my car at around 260hp considering it was rated at 305 hp. Using that same idea I would have 344hp with the stock heads and cam from the z06. Now add the headers, intake, suspension and chasis mods, I already have, plus tuning, and future trans upgrades I have in mind, I would think I would be close to that 400 hp at the tires I wanted but in a nice strong stock sounding package.

 

go get a dyno, your good bit more then 260 rwhp... only LS1s ive seen that low had something wrong with them, or dyno messed up...

cory

 

You'd need to eat three bowls of that import just to equal the power in one bowl of LS1.

 

Sorry ... keep in mind that the Z06 already comes stock with an intake ... the same intake you have on your 01 ... so there's nothing to be gained there. The Z06 has it's own tuning profile, that's part of why it HP rating is what it is ... so you have nothing significant to be gained by tuning ... other than to get to that 344 level you are using as a bench.

So the only real upgrade you are left with is headers ... and there isn't a Z06 out there that is putting down 400rwhp with just headers ... Even using your own math you're expecting get 50+ rwhp out headers and tuning. That's a real stretch.

Reality, expect about 365 to 370 with a possiblity of maybe 380 ... depending on how far you are willing to lean your AFR out and advance your timing ...

 

Am i the only one here of proper sound and mind. you are building a Z28 "sleeper". with the mods suggested it you would have to have a larger exhaust even if its quiet and the fact that there is a Z28 badge on the side and back lets everyone know at a glance this is an f-body V8 and could have infinate combo of mods even if its quite. if you disagree, then think of this, the corvette is quiet, right, and we know its fast and can have mods and be very fast, right the same aplies to the baby ls1's. everyone knows there fast. it doesn't really matter how fast they just know there fast. unless your trying to confuse or impress a f-body enthusiast like are selves, but i, along with many enthusiast can spot a fast f-body by the indicators: visible mods, quickness of simple acceleration, sound, and the attitude of the driver. you want to mask the sound but all the other indicators are going to be blaring. I would save the money and do sensible mods. and have that thing scream. I have been next to a trans am with borla on the highway and the drive got (it seemed) fustrated with traffic and when an opening came he whipped around a car and gunned it. the loud scream sounded like a diesel but at higher octives. My point, scare everyone away and save wear and tear on your ride from racing. and win races simply by other race enthusiasts forfeiting any race with you as the sound scares the uther crap out of them.

 

My bone stock 03 Z06 dyno'ed 351 RWHP and based on number of C5 forums, the normal range is between 345 to 355 RWHP, with very few in high 350 RWHP range.

 

Building up your Camaro with a Z06 cam is really not in your best interest. Your desire to sound stock makes the challenges a little higher, but not impossible. The single most important pieces on the LS6 motor are the heads. Everything else is negligible. If you have some money to spend, have the heads flowed with an intake and exhaust pipe, figure out your inteded usage (i.e powerband), and have a custom cam cut for your application.

 

I'm not trying to sound 100% showroom floor stock. Everyone has some sort of mod done to their car. Mostly intake and exhaust. I was trying to avoid the lobey idle sound of a bigger cam and just sound like a car with an exhaust and intake. It would be a big suprise to people at the strip on the ocasional street encounter.

 

Hmm, the general consensus say's I could do more for the time and money and still sound how I want to. Thanks for the replies.

 

What he wants is a sleeper SOUNDING car. I'd say most cars out there have a mean sounding cat-back. He wants the HP to back it up, without a lopey idle which is a dead giveaway he's got cam, or heads/cam. We're not talking abouta 10 second chrysler minivan here, he just wants to be a little stealthy. It's tough to tell how fast a car is just by the sound alone. Obviously cams are a giveaway, that's why he wants to avoid that with the z06 engine.

EDIT: looks like I should have kept reading, lol I basically repeated him verbatim.