[ruger226]

Ok so over the winter im buying a set of cams but dont know what to look for.
As it sits now:
BBK shorties
Catted x
Slp lm1's
CAI
BBK tb

I want a set of NA cams that will go with my mods and 4.10's can some one please help.

[gtstubby]

cms stage 2 cams are nice,set of comp valve springs and retainers.

[4.6DreameR]

Comp 262's
CMS stage 1
Hitech stage 1
All are good options for a bolt on car. Stage 2 cams are more likely to cause PTV and you would need to wind your engine to around 7k to get the full benefit from them. Stock 2v bottom end should not rev that high.

[gtstubby]

ya thats true

[Kevin C]

I'd have to say CMS stage 2. Apparently they're some of the only "stage 2" cams you can safely run on a completely stock PI 4.6. Even HiTech stage 2s cause PTV issues, which was interesting for me to learn since I used to want them. Not much, but enough to leave some scuffs on your pistons.

[ruger226]

Where can i get cms cams?

[hooliganryder]

Cushman motor sports... Cms stage 2 is what I got and love them.. I sent them to MHs and had them degreed and have had no issues with them.. And I get complments all the time on how mean it sounds

[MineralGreyGT]

Personally I would stick with a stage 1 cam, you're not going to get the full potential of stage 2 cams with stock pistons, more likely to have ptv issues and its roughly a 5 hp difference between stage 1 and 2s. Read allover the forum guys have to really retard the timing on the stage 2 cams just to avoid ptv. Cms stage 1 or comp stage 1 and you'll be golden.

[hooliganryder]

Why buy stage 1 when stage 2 cost the same? And ptv issues are avoided if the cams are installed right..

[MineralGreyGT]

Originally Posted by hooliganryder Why buy stage 1 when stage 2 cost the same? And ptv issues are avoided if the cams are installed right..

But you still have to retard the timing quite a bit to avoid it and stock internals can't even rev that high to utilize the stage 2. I'm not saying there's anything wrong with stage 2s but if I had a stock rotating assembly personally I would go with the 1s.

[NickPohlAandP]

Or you could get the Trick Flow heads which have the piston placement moved to avoid PTV issues altogether. PTV, along with other factors, killed my engine. It was very apparent when I tore it down. I then talked to a friend of mine who has a lot of experience with the 4.6's and he told me that he's seen PTV contact on EVERY 4.6 he's ever torn down, even completely stock ones.

[ruger226]

At what point will i need springs? and i cant afford the tf heads i would love to have them but they are not in my budget.

[4.6DreameR]

Springs are good when installing any cams, but not required until going with cams that have over .550 lift. Usually any brand "stage 2" cam requires them, except hitech ones, but if you were to do those and not do springs you couldn't rev the car over 6300 rpm.

[Orange2V]

Here's a link. Read up. The real deal on the PTV stuff on these cams is right in the description.

You should concider MHS stage 2 IMHO

ModularHeadShop Bullet Cams

[ruger226]

How much rwhp will mhs stage 2's give me?

[mrbigjeep]

around 270. give or take a few. possibly 280

[JayC]

OMG! This thread is so full of bad information I wouldn't know where to start!

[Nitmare67]

Originally Posted by JayC OMG! This thread is so full of bad information I wouldn't know where to start!

I'm with you on this. I call bullshit on PTV issues on stock cams unless an idiot is timing the engine several teeth off. I have ran xe262ah cams and they fit perfectly fine with no PTV issue. Picked up about 25rwhp. I prefer a stage 1 cam on a stock headed street car that doesnt see the track but too each his own. Some claim to lose a little bottom end and some dont. I havent tested either with back to back runs after cams swaps to say for certain. My xe262ah actually gained a little hp and tq everywhere peaking out at 27rwhp increase.

I've heard from JayC that his CMS stage 2 cams lost nothing down low. Those are a proven solid camshaft. I went CMS stage 2 blower cams for my new motor also.

I have worked with Nick at MHS on several different things and have spent alot of money there but I prefer to purchase cams from Jim (CMS). He gives us a forum discount also which makes them hard to turn down.... Thats not to say there is a damn thing wrong with Nicks cams because there isnt. His grinds just didnt fit my goals for power, smog, driveability.

[Nitmare67]

i will say one thing i know for sure.... TUNING

So many cams swap HP figures, loss of bottom end, gain... everything you name it are all DIRECTLY related to the tune on the vehicle before and after. If your tuner doesnt work all of the timing table to get that great part throttle tq and hp your going to think its a dog down low. I spend as much time working the part throttle timing section of the spark borderline and MBT tables on my cars as I do on WOT timing. Its where all of your throttle response, part throttle power, acceleration and fuel economy come from.

[MineralGreyGT]

Originally Posted by JayC OMG! This thread is so full of bad information I wouldn't know where to start!

Feel free to correct me...... If you have to retard the timing aren't you hurting the full potential of the cam? that's just my thought process I guess. Also from what I've read whp wise there's a minimal difference between 1 and 2 but how the power is distributed in the rpm range is what's different. Also are there any known issues with passing strictly OBD II emissions testing with stage 2 cam? I apologize in advance if I gave out bad info OP