hey what do you guys think of these two cams
LS6 cam 218/204 550/550 and 117.5
LShotcam 219/228 525/525 dunno the lobe
this will be combine with ported and milled 5.3 heads, ls6 intake, longtubes and probably a 3k stall. gears are 373
im looking for drivablity with a decent pull range
thanks in advance
What are your goals? Do you care about staying emisions compliant?
The '02+ Z06 cam is a good option if you want to stay super sleaper and pass the sniffer w/ no worries. With the other mods you listed I’d say 380RWHP with a good tune (and the convereter locked, maybe a little less cuz of the Auto though). That’s a good bit over what a stock Z06 does since the ported 5.3s will be slightly better than stock LS6 heads and you’ll be running LTs.
The LSHotCam is outdated. I’ve seen it make impressive power… but if you’re going to go w/ a cam that’ll have that aggresive of an idle (it’s a 112 LSA BTW) and be hard-pressed to pass smog you can do better. Especially w/ ported heads you can use more than the .525 lift it has. If you’re staying NA I (and lots of GEN III tuners) prefer a reverse-split cam. That is, the intake has more duration than the exhaust as opposed to the traditional SBC (ie GEN I & II) split of more duration on the exhaust side.
The Thunder Racing cams are very popular and put down very nice numbers. The TR230 seems to put down some great numbers (I’ve seen 420+RWHP w/o head work on a stick cars often). If that’s going to be too aggresive for you then you’ll want to consider the TR227/224, it’s on a 114 or the 224/224 which can be had on a 114 and will give you a little bit of noticeable lope but nothing too big. And if you really really want to get lumpy the TRex cam is mean… but I think it’s overkill in stock displacement motors. Though I’ve seen some all forged 346s spin it to a bit over 7k and make some nice power. I think Thunder recomends a bigger stall than you’re going with for this cam though.
Now if you plan for Forced Induction or Nitrous later then you’ll probably want to think 'bout a traditional split. Thunder has a few (for example you can get a 224/227 or a 226/230 basically the reverse of the above cams I mentioned).
Oh, and I have a freind selling one each of a TR224 (I think it’s on the 114 I’ll have to ask), a TR230 and a TR236 (nice meaty cam… but you’ll want better than 918 spring with it, you’ll want a set of duals really that can handle the .602 lift).
-TJ
now remember this is in a 5.3. i still want a decent power range so if i haul my bike i dont want it to struggle carrying it. also i dont want too high of a rpm range. goals honestly are high 12s/low 13s on motor then probably some juice. ive been kicking idea around of running LQ4 heads or hte ever popular LQ9 heads then having them milled and of course ported alittle. since they both have 72cc and my stockers have 61cc. cause the 5.3 has 9.49 cr. it has to remain emissions friendly for this truck. i know there are better cams out there but figure with those two listed arent bad of deals. truck will probably have LS1edit for tuning.
with the hot cam only has a .525 lift how about with 1.8 rockers that should take it up to say .560 lift or so but you said that cam isnt the most emissions friendly? also can you give me the operating range of those cams listed. thanks alot
Oh… I was thinkin’ LS1 cuz a lot of LS1 guys run ported 5.3 Heads. Anyway the LSHotCam has been known to pass CA emisions with a good tune so it’s not like it’s impossible. I’ve seen the cam make good numbers but I still contend there’s better grinds out there these days. I haven’t really researched what the 5.3 guys prefer though. Go to the trucks section on LS1tech and do some research there. I think the TR224/224 on a 114 might just what you need though. Going w/ a non-split like that is a good compromise between an ideal cam for NA and an ideal cam for N20. It’s very smogable (if that’s a word :kekegay: ) and makes good power. Although if you plan on spraying most of the time you’re at the track the HotCam with it’s standard split duration might actually work better for you… but something like the 224/227 on a 114 I mentioned would probably be even better still.
Oh, and go to www.thunderracing.com and check out their cams for their suggested operating ranges.
-TJ
too bad i didnt end up gettin that one cammed Z06. i wouldve given u the stock one.
tj…u said passin the sniffer??? we dont use the sniffer in odbII cars in PA!! all you do is plug into the OBDII port…and if no codes pop up…then the car pass’s emissions…soo you can run any cam…and just get a tune and delete those codes…and you will be ok…soo emissions shouldnt be a worry
quick i think the .525 lift is with 1.8 rockers…im not sure…but i know the lt1 hot cam is .525 with 1.6 rockers…where the lt1 stcok is 1.5 rockers
Stock LS1 rockers are 1.7 so the .525 is with those.
-TJ
I didn’t know that. When I worked at Shults Ford even the brand new cars got a tail-pipe test before they got their stickers. :shrug:
-TJ
yea they just do the port test not pipe anymore but i still want to be on the safe side
PUSSY!!!
all shops in PA now have a machine to test OBDII cars…it only plugs in through the OBDII spot…in pa ur not allowed ot check OBDII cars through the tail pipe…its a law
i think…that the .525 lift with that cam is going to be with the higher ratio(1.8) rockers…b/c that the .525 lt1 hot cam is with teh higher ratios(1.6) for it!!!
No, that is not the case. It’s rated at .525 lift w/ stock rockers.
-TJ
i c…damn…wish that would be teh case for the lt4 hot cam
I don’t know if it’s the case for the LSHotCam (and I don’t believe it to be so) but I know the Thunder Racing cams (and many other aftermarket Gen. III cams) in fact should not be used w/ 1.8 rockers. The TR cams are designed w/ a very aggresive lobe profile with very fast ramp rates. A higher ratio rocker not only provides more lift but it speeds up the rate and which the valve is lifted. With the TR cams and a 1.8 rocker one could experience lifter colapse and valve float. The LS1 was designed w/ a 1.7 rocker initially because it allows (along w/ the fact that the motor uses roller lifters which allow for much more extreme lobe profiles and ramp rates than possible w/ a flat tappet lifter) for the valves to spend less time opening/closing and more time near full lift. TR chooses to take this property to the extreme with even more agressive lobes. I don’t believe the GM designed HotCam uses that aggresive of a lobe though, I believe it can be run w/ a 1.8 but if I was considering spending the $ on it and 1.8 rockers I’d sure research it.
-TJ
i c!!! thats pretty cool…i never knew that about teh ls1!!! out of school and im still llearing shit everyday!!
Well all the same applies to a Gen. I or II. If you put 1.7s or 1.8s in either of those it will have the same effect. And running roller lifters (like your motor does) allows for much more “square” lobes than you could have with even a solid flat tappet motor.
-TJ
what about this cam… its a LPE one it made 413 hp was 255/282 206/226 and .571/.578 and 118.5th with just Long tubes. now the conversion to fbucket accessory drive is worth 6hp and a LS6 intake along with some gasket matching of stock 5.3 along with milled to 10.1 should get me a decent number. probably like 425 or so then say a 100shot…not to bad for a truck with a small motor like a 325
tj got some good ideas,that dont sound bad either!