What did you dyno before the cam and how much improvement did you see in the 1/4.

Thanks for the reply,

Mike

 

Patrick - Where is Victoria located at? I am very interested in hearing how your car sounds. At the moment I have a 224/220 .581/.581 116LSA and this cam actually sounds really appealing to me as a sleeper cam. If it idles similar or better than mine I would consider this cam. At the moment I know to get the RWHP that I want out of this cam I will have to buy some headers, then I will not be as much of a sleeper as I want to be. Although with the Cheater cam it looks as though I would not have to worry about it. Your comments would be very much appreciated!!

Thank you!

 

Brian, Victoria is in South Texas between Houston and Corpus Christi (near the coast). Probably too far from abilene to hear, but I think Thunder Racing might have a sound clip on their web site (or will soon). If you'd like to keep your factory exhaust, you'll probably maintain your current power level (or pick up a little) and improve your overall street manners a great deal.

You're right, the reverse split cam you have works best with a really free flowing exhaust. The keys to the CheaTR working so well with stock exhaust are: earlier exhaust valve opening, longer exhaust duration, smaller overlap (-10 degrees at .050") and lots of intake lobe area with a short seat to seat duration number (to keep the idle crisp and the power high).

 

don't wanna hijack the thread, but since we're on the subject:

1) which would be better w/ this cam, comp 915s (good to .625 lift) or 921s (.650)? Are the 915s enough, or would the 921s last longer since they are able to withstand more lift?

2) I've seen people mention the ls2 timing chain @ SDPC for around $28...does this fit the ls1? Will it work as a replacement for my stock chain when I do the cam swap?

Thanks everyone...

 

A double spring actuall has two resonant frequencies, one for each spring and the damper between them will help lower the amplitude of the frequencies.

A beehive although it is a single spring has an advantage because it has a beehive shape so it has lots of very small amplitiude resonant frequencies that don't hurt the TQ curve at any one spot.

Bret

 

Gee, I didnt see any mention of the PRC or PP Gold Springs. Some of the best on the market.
The CheaTR cam sounds like something I wish I had no and then. The current TSP 231/237 is getting old, not only in technology but tiring. I havent dyno'd since this cam went in, last time with the TR 224 I went 363rwhp (cant recall tq), and ran 12.4 @ 109, now running 12.1 @ 112. Not a huge gain, but cant complain since I still run 3.23 gears and a small TC.
Patrick have you run this cam and compare to stock or previous cam on track.

 

Is your cam the MTI stealth?

 

Guess you could always go with 1.8 rockers for more lift, yet retain duration (within a *) and make some more power while idling as stock etc.

 

Hey Charlie, this is the cam i purchased. I considered the 1.8 ratio option however i would need a really good flowing set of heads to get any gains over .600 lift. Stockers would just stall out. When does it end man? lol

 

It never ends!

 

Scott, you need 4:10 gears and my MS3, if I ever get my car back for the body shop I'll take you for a ride


I need a family friendly cam now

 

If it is an MTI, it is a Stealth II.
The Stealth is more powerful than the cheater and with stage 1.5/or 2 heads, it will make over 420 rwhp.
I'm at 404/383 cam only (but I'm running .045 gasket and portmatched intake and exhaust).

 

Not to argue, but at this point no one has tried the Cheater cam with anything other than stock exhaust. It may or may not be better than the Stealth II. I think it is premature to make any comments about it's absolute output since it hasn't been tested.

 

The reason I said that is that guy allready has the Stealth and is willing to switch, which would be a downgrade IMO.
Cheater cam has its purpose and so does the Stealth.

 

It's not a downgrade if he's running stock manifolds and cats. The Stealth II is a superb cam with excellent exhaust...certainly better than the CheaTR...but if he's running with logs, factory cats and y-pipe, he probably has a mismatched combination.

Bottom line:
Factory exhaust: CheaTR (GREAT), Reverse split cam (not optimal)
Long tube headers, high flow y-pipe: Reverse split cam (GREAT), Cheater (not optimal).

 

Patrick can you find out from Thunder if this cam will clear the AFR's milled .040? My car has the AFR's milled .040 and the the .040 Cometics. If there is plenty of clearance -I'll try the cam. I can see it picking up at least 5 rwhp over the factory Z06 cam-that would put me closer to 420rwhp. I still have to go back with a fresh tank of gas and see if the car still knocks. It was 2 degrees from 4500 rpm and up. This is with sunoco 94 octane but again it was mixed with half a tank sitiing in my car over the winter.

 

Wow, now I see why you're octane limited. You're probably around 11.5:1 static compression. Get all that nasty winter gas out of your car and you should be good to go.

As far as P to V clearance, I can't see it being a problem. The exhaust is the only one you'd have to worry about, but with only 230 degrees of duration and an early exhaust valve closing, I think you'd be fine, but send a PM to geoff to make sure.

 

I agree. Personally I still think the Cheater cam will have more potential than everyone thinks with headers. This is just speculation on my part at this point, however. Jason is putting headers on his car in a couple of weeks. At this point I think we will have some solid answers on what this thing will do cam only.

 

P/V Clearance should be fine with that set up.

 

Geoff what do you think the cheatr cam is worth over the stock 02Z06 cam? Is there maybe something more optimal for the Z06 do it's freer flowing exhaust? There's like a 10 degree difference in duration plus the added lift which would take advantage of the AFR's. I'm guessing at least 10rwhp-what do you think? Man that would be like 424 or like 480 horse out of a 346-man these motors are badass!