Anyone hear anything?

 

Iam waiting on this also,need this for my final setup

 

some boosted cams would be nice which im sure will come around after hahns setup hs been out for a while

 

Me too...+15-+25 whp would be perfect.

 

20 hp you are on the money,a tech sais is what to expect,I want NA no turbo so cams,header/DP and tune, then we get 220,buddy

 

i dont know exactly how your vvt works, but wouldnt you have to elminate vvt to run different cams and unless you are running cams specifically to be safe with a very aggressive boost setup, if you have to elminate vvt, wouldn't you actually gain a very small amount?

 

I hope so Mike. Seems it'd be easy for GM to do. Wonder if they are coming? Wonder if they would be similar to the Toyota VVTLi camms fo rthe GTS or for the GT. I hear a few cams have come out for those cars so I'd think ours couldn't be that hard to make...problem is the cost and interest to do it...

 

Probably simular to the ones on my vibe/matrix, yah that would be nice,we need these thing for the final product,we know what this car is capable ofNA just need the goodies

 

if you dont know how vvt works why would you post this? its oil controlled, increase oil pressure, increase cam timing...


What companies are you guys talking to?

 

Now I could go for that over spending 4k on a turbo kit plus installation.

 

they could make cams that actually kick vvt in at a earlier stage of aceleration .

 

Actually, I believe the computer determines when to advance the cam timing, and it uses oil pressure to do the work. It's a 2-position device, meaning 2 different cam timings. Note that lift is not altered, but when the lift occurs is. Therefore, a more radical cam would need to be cut to allow the maximum advance position to survive (valves not hit pistons at max RPM) - the minimum position will take care of itself. This really isn't as big of an issue to the cam profile designer as it seems.

Jay L.

 

you know your cams in your estimate do you think cams for the 2.4 are that far off yet? there is already cams for the other two models.currsing VVTI

 

the word around for a while was that jbodyperformance was making cams for us as we speak. I'll shoot them an e-mail and see whats up.

 

well i-vtec and some other different forms of valve control use adjustable lobes and such which means you have to have specially built cams that are unlike most other cams (not just regrinds). which would justify my statement. and uhh thats why i phrased my post as a question and ummm i don't think it's oil controlled because if you had a leak or blew a line, you'd have major valvetrain issues.

 

Its made from the same core just separate lobes. I wouldn't mind HP Tuners opening up the VVT tuning maps so we could play with adjustment but having a BIGGER cam hit harder is all I need not necessarily sooner.

 

Exactly. Unlike the Honda system, which has 2 sets of lobes on the cam, ours is like the Alfa Romeo system which has a "normal" cam (looks the same as a non-VVT cam) with lobe profiles optimized for the maximum advance position. You'd get the same result if you didn't have VVT and set the initial cam position in the same timing relationship as when the VVT is at maximum. It would run exactly the same on top end, but would have less torque down low and idle worse. In other words, the VVT isn't to make it run better on top end, it's to allow a more radical cam for top end performance that is retarded at lower RPM for better torque and better idle. So it's actually there to improve the bottom end.

This is harder to explain than it actually is, I find It helps that I've rebuilt the Alfa Romeo system a few times, and it's functionally the same.

-J-

 

Here's the response i got back from jbodyperformance about cams

"Stay closely informed, we should have a package for the LE5 in December"

 

thanks Brandon Great news,i can start getting my goodies together over the winter

 

GTP question for ya,My buddy,has a turbo shop,he said cams for a 2.4vvti egine should net 35 to the wheels,he says this from experience,Do you think we can expect a gain like this???**** dude between all the standard bolt on and a tune and the cams in addition the 2.4 will be smokin bad even without a turbo

 

35 to the wheels seems too high imo. That's a good 40+hp at the crank which is a HUGE improvement from just a cam swap.

 

Mike, my estimate (conservative) with just cams and my mods should put it about 15-20whp with tuning. This all depends upon the lift and duration of the cams. I don't have specs on the stock valve springs either. If the "package" that J-body is launching has VVT cams and hi-rate valve springs they can really ramp up the lift and duration and probably get a bit more like 30+ whp by allowing a redline bump and allowing the supporting mods like the ZZperf header, 3 inch DP (cat less) and 2.5 or 3 inch exhaust to really open up the top end. As we know HP is a function of engine speed and 7700-8000 rpms on the 2.4 would be TASTY and get 30+ whp safely.

You know it'll be very stout, get good gas mileage and be a beast on the highway with lightweight rims and perhaps...shh...a 50 or 75 shot for those pesky blown motors..

 

what is your ballp[ark estimate for cost of cams?

 

Good question. Exclusivity of these should put them at around $600 with springs BUT THESE WILL FIT A SOLSTICE/SKY so there is a significant market there. Perhaps we should hit up the Solstice guys. They may move the market faster than we can (in sheer numbers).

I know for my Nissan VE (VVL) cam packages have come out that are really good from Franklin (austrailia) that are cams and springs for $500.

If Crower did it it would probably be around $500-$700 cams and springs. I do not know who Jbody will outsource to so it could be a toss up on price.

 

Thanks in the new year I will be looking into this as my final solution, brfore tuning come spring,look out