Ferocity02

iTrader: (60)

The build is a 01 Silverado 5.3L extended-cab (~5000 lb). The engine will have stock heads, intake, and CR. Turbo kit will be a front mount intercooled MP70 to start, probably going bigger in the future. Stock driver side manifold with crossover pipe to passenger side log manifold and 3.5" DP. Initial goal is 500 rwhp stepping up to 600+ rwhp gradually.

The truck currently has an '00 LS1 cam which is 202/210 0.496"/0.496"116 LSA.

The truck must be able to pass smog with the cam (the turbo will be removed but the cam stays in) and sound relatively stock. I am also looking for a cam with good low end torque for highway cruising at ~1750RPM to help improve the cruise fuel economy. I am perfectly happy sacrificing a few ponies if it means better fuel economy.

Any suggestions?

Ferocity02

iTrader: (60)

Anyone have some thoughts?

I'm thinking an LS6 cam or a TU0 (216/216 .561/.561 114LSA).

stock48

iTrader: (17)

My Isky 212/112 will makes it thru in a 6.0L no problem. In a 5.3L the 210/210, .532/.532, 114 would be a for sure deal, and have decent tq.

got-a-ls1

iTrader: (12)

ls6 no doubt. find a cheap used one for 100 bucks.. thats what i did. will do what you need in every aspect. smog and power. made 580 on 12 lbs on a stingy mustang dyno. and when i say stingy i mean i made more power the a ls7 z06 with a procharger on 7lb boost on the same dyno.

HRHohio

I did the LS9 Cam.

I recommend the LS9 Cam Swap. Factory in Supercharged Corvettes.
(But it's a 3 bolt cam... you may have to swap out a few things...

"The LS9 camshaft is a 3 bolt design and will use a 3 bolt cam conversion kit if you are installing it in a single bolt application like the 2007 – 2010 LS2 or LS3. If you are installing it in an earlier LS1 or LS6 engine with the cam sensor at the back of the engine you will need a 2005 LS2 front cover, 2005 1x cam sprocket, camshaft extension harness, 2005 LS2 chain dampner. "
http://www.lingenfelter.com/mm5/merc...egory_Code=C31


http://www.chevyhiperformance.com/te...s/viewall.html

Specs are: (211/230 .558/.552 122.5 LSA)

Mine put down 551 rwhp @10psi boost on an otherwise stock LS1 engine. Stock exhaust manifolds and stock catalytic converters / y pipe.

Purrs like a kitten too. Can't tell it has a cam swap.

Good Luck.

ajseburg

iTrader: (3)

Subscribed - I have the same goals as the OP, but in a ls1 f-body. Build will have a similar turbo as the OP. Looking for something with a little more low-end than the ls6 cam. I've spend a considerable amount of time trying to find info on the Isky cams, and it seems that everything I find leads back to Stock48. If you haven't already, check out his videos on YouTube. His truck absolutely flies. Stock48, how are the street manners and fuel economy on the Triple 12 and 215/215?

denmah

iTrader: (2)

me and a friend have done ls9 cam in 4.8l,

130 dollar cam from scogg and dickey
17 dollar ls2 trailblazer cam gear 3 bolt
and a 110 dollar front read cover (i got mine for free)

this cam is amazing for manners and power. 122lsa is incredible, cars idle like stock cam.

i made 501rwhp on 14lbs of boost with a chinese gt45 turbo, and thru a th400, with stock 4.8l truck motor.

ls6 cam is also a nice easy solution but they have a pretty lumpy idle for a stock cam, at least i think so.

lsxmalibu

iTrader: (50)

ls9 cam here also, idles stock and compared to my ls6 cam it feels like a totally new animal.

denmah

iTrader: (2)

i think we picked up 75rwhp at the same boost level ls6 vs ls9 on my friends truck

Ferocity02

iTrader: (60)

I had an LS9 cam but sold it, everything I read says it's a blower cam not a turbo cam, and I didn't feel like doing the LS2 timing cover conversion.

FastKat

iTrader: (10)

The LS6 cam would probably be my first choice. It will really shine higher in the power band. If you don't like the LS6, how about the early LS1 F-body cam - I think it was 1998-99. There was someone here a while ago making relatively big power with it on a turbo setup... I think it has a slightly higher LSA.

Ferocity02

iTrader: (60)

I have an 00 LS1 cam in it now, it's 202/210 0.496"/0.496" 116 LSA.

831jd

iTrader: (3)

Any new track times or numbers with that cam ? So. You recommend it over the ls6?

HRHohio

Well, for not being a turbo cam, it put down 551 rwhp @10 psi for me with stock intake, stock heads, stock exh manifolds, and stock cats. All that in a rear mount T-76 turbo. Got me to my rwhp goal.

Granted, there are probably better cams (custom grinds) out there for pure power, but in your original request you asked what cam would do several things:
1) make good power (I defined good as 550+ rwhp on stock engine, I made 551) (your goal was 500-600, I think this hits the midway mark)
2) "must be able to pass smog with the cam " (I think this one does, otherwise GM wouldn't have mass produced it and put it in a production car)
3) sound relatively stock - (122 LSA does that, purrs like a kitten)
4) good low end torque for highway cruising at ~1750RPM ( 375 ft-lbs tq @ 1750 rpm in the 2009 ZR1) From Dragtimes: http://www.dragtimes.com/images_dyno...e-ZR1-Dyno.jpg

Not sure what else could make you happy?

(LS2 timing cover conversion was the least of my concerns.)

Not getting mad, just a little confused about what you want.

Could care less what you put in your car, but subscribing - If you do find one that will make more power, not a lopey sound, has great low end torque and still gets you through smog, I'd love to know what you decided on.

Interested... Good luck!!!





Added: Not sure what you've been reading, but...From Lingenfelter website: http://www.lingenfelter.com/mm5/merc...w=&range_high=

"This is the GM factory 2009-2010 LS9 ZR1 camshaft that works excellent in many supercharged or turbocharged applications. The LS9 camshaft is 211/230 @.050 valve lift and .558/.552 lift with 1.7 rockers and a 122.5 centerline.

In 2009 GM introduced the LS9 in the C6 ZR1 supercharged Corvette engine. After comparing specifications on the camshaft and finding out how economical this is due to it being mass produced Lingenfelter discontinued the GT7 and started using the LS9 in supercharged or turbocharged applications."

denmah

iTrader: (2)

if you wanna see it that way, its the best blower cam for your turbo car.

HRHohio

I'm just sayin... I can't think of a better cam (Blower or Turbo) that meets all 4 points. Z06 cam would meet them, but gives up power compared to the LS9 cam. There are other cams that definitely have more power, but will probably either not make smog, or will not sound as "unmodified" with 114-116 LSA.

Been following this thread on PerfTrucks side of the house and other than the Z06 cam, the others that were mentioned seem to be "lopey". They all seem like they would be leaving hp on the table compared to the LS9 cam. Not to mention, nobody had even referenced smogability in their threads. Oh well. We'll see I guess.

Cant wait to hear what he decides on and how it turns out.

denmah

iTrader: (2)

the ls9 is my favorite, as of right now

Ferocity02

iTrader: (60)

The LS9 cam comes in a 6.2L motor, which "uses" more of the cam than a 5.3L would, so it will pass smog much easier. You're comparing apples to oranges there. I suspect the LS9 cam would pass smog in a 5.3L if tuned well.

A 114 LSA will idle like stock, or close enough. The stock 5.3L LM7 cam is a 114 LSA, albeit lower duration. It does not have to sound exactly like stock, just close enough.

Yes, the LS9 cam is 1/3 the price of a custom cam, but if money is no object, then there are better options out there than an LS9 cam, in my opinion of course.

If you were to take an actual "turbo cam" and swap it into your setup, and retune, then you will probably make more power. Saying the LS9 cam is good because you use it and it makes XXX hp means absolutely nothing.

denmah

iTrader: (2)

i just think 400 dollar custom grinds are a joke when you can get a ls9 for 120

but i also use 80 dollar motors

disc0monkey

iTrader: (10)

if cheap go ls6 or even better a used cheatr cam with dual springs. 214/230 .600 117

in my experience i got a good chop from a 218/224 on a 114 but i believe the intake lobe was super lazy on this particular cam
ie. not long seat time for how short the adv duration was.