-jamie-

Hi guys,

I have an LS2 block with LS3 heads, basically I'll be transferring my comp cams duel valve springs and push rods from my old all LS2 engine. I presume these components will work with the LS3 heads?
But my main question is could I use this cam http://www.compcams.com/Company/CC/c...csid=1093&sb=0
With my new setup being ls3 heads, will this cam work?

Thanks for any help,

litle88

iTrader: (20)

I'd say no, Ls3 heads like overlap and a big issue is Ptv clearance with the 2.165 and shrouding. I'd get a specd cam if I were you. Are you milled?

87silverbullet

iTrader: (11)

Yeah that's a no on that cam. It might make power but won't be optimal like a correctly spec'd LS3 cam will be. Plus, like litle88 said, there is a PTV issue you have to worry about with the large valve LS3 heads have.

-jamie-

Ok cool, cheers for the help there guys. I'll have a search around in the UK, hopefully I can find a suitable cam!

-jamie-

At the moment it's a stock ls2 block with stock ls3 heads. I'll have to fit the valve springs and push rods from my old ls2 and find a suitable cam! Should I be looking for an ls3 cam then?

Blackpanther99

iTrader: (8)

Yes^^

litle88

iTrader: (20)

You'll need Ls3 rockers but wait on the springs because they might not be suitable for the cam you end up choosing. The cam must match with the correct springs.
Contact Brian Tooley at Brian Tooley racing. He has cam packages and that includes specing you a custom cam for your setup.

-jamie-

It's got ls3 rockers already. My issue is I'd need to find a cam in the UK really, I don't have time to wait for one to be shipped. I'll get in contact with some LS guys over here and see what they say, I'll report back !

litle88

iTrader: (20)

Good luck and keep us posted on what they say.

-jamie-

Will do. But in the mean time what cam would you recommend? As I said time is of the essence so it would need to be an on the shelf part.
Lumpy and lairy as possible thanks!

Appreciate the help,

-jamie-

I've been pointed towards this cam by someone with a similar setup, thoughts?
http://www.texas-speed.com/p-1215-te...-camshaft.aspx

newschool72

iTrader: (12)

Im no expert on 6.0s w LS3 heads but I would guess valve reliefs would be mandatory with those lift/duration #s, especially on a 111 LSA.
I don't think anyone has asked, but what are your goals and intentions with the car. That cam , if it does what they claim, would be a great street cam for a fairly aggressive combo. Not a DD cam, unless you don't mind the surging and bucking at low RPMs. Should sing at upper RPMs in a 6.0.

-jamie-

I have duel valve springs and ti retainers from my old ls2 which I'll be fitting. The engine is going into my 'competition spec' drift car, really looking for high rpm, most power above like 3500, Not worried about drive ability.

Here's a link to a build thread I've got
http://www.driftworks.com/forum/drif...unny-s14a.html

newschool72

iTrader: (12)

PTV was what I was talking about with valve relief. I think the cam would be good for what you do. The tighter LSA will help bring the torque in quickly. I know time is critical, but one of the grinders like Martin at Tick would be able to get the powerband right where you need it.

99Bluz28

iTrader: (35)

Look at these two cams:
http://www.tickperformance.com/tick-...3-l99-engines/
http://www.tickperformance.com/tick-...3-l99-engines/

For a TSP cam try the 233/239.
http://www.texas-speed.com/p-1154-te...-camshaft.aspx

WKMCD

iTrader: (2)

Myy friend - 2C5S - actually made very good numbers with a very similar cam but with more lift. He did have reliefs in the pistons. IMHO the heads LOVE lift with overlap in the 12-13 degree range and an ICL around 111. This is assuming you'll be running a composite intake.

newschool72

iTrader: (12)

And with a carb style intake, you just about cant get the LSA too tight. Im running a 108+4 with a GMPP dual plane and the power comes in right now! D&A machine shop built a 409 with the L92 heads for the Engine Masters Challenge and after a few trys came up with a short duration , I am going off memory, but I think 226 at .050 on the intake, just over .600 lift and a 108+6 LSA. It made 565 ft lbs at 2500 rpms and 595 ft lbs at 3500 peak! It was right at 600 HP at a low 5800 rpms. I based my stock cube LS3 off Andys results and it makes awesome power in a super mild ,street friendly combo. I had induction issues( low profile bonnet on a cold air kit) that killed my 1/4 times( fixed now, but haven't gone back to the track yet), But with a 2200 rpm stall, 3.42 gears, and 3500lbs it did 1.7 60fts. It buzzes cleanly to 7K now that I fixed my issues( nosed over at 5200-5500 with the bonnet). WKMCD kinda led the way on small cammed L92 head combos, so I would listen to his thoughts. Good Luck!

litle88

iTrader: (20)

Yes sir!

-jamie-

Right, I can get a cam for a decent price from someone on my door step, specs are 218-227 .595 .595 112 lsa. What do we think? Afraid I'm not to clued up on these

Cheers

99Bluz28

iTrader: (35)

That would make for a good daily driver cam, but nowhere near what you want/need to use it for.