I've been looking into doing a ported built head and was wondering about the different camshafts options.. I know ZZP and JBP makes them.. Has anybody used the JBP ones?

These are the JBP ones
Cobalt/Redline Cylinder Head/Valvetrain parts

 

20 views and nobody knows lol

 

JBP got banned from here, several members had some nasty experiences with them. The triflow design sounds cool, but from what little I've heard it didn't translate to actual performance.

ZZP on the other hand, knows ecotecs.

 

Thats what I was worried about. Their just half the price of ZZPs lol

 

there is a reason why

 

Thats what I figured I was just seeing what all options there are

 

not many good options for cams for this platform, zzps are the best option. Actually they are the best option for almost every part made for the ecotecs lol

 

Turbotech makes some but Im not sure if they'll work on a lsj

 

Doesnt comp cams make a set as well?

I remember reading a article where the lsj made huge power gains from some comp cams.

 

turbo tech sells the comp cams one. You have to special order it from comp cams if you want them to work with the LSJ. They're pretty lack luster, the blower cam is just the stage 1 intake cam and the stage 2 exhaust cam. ZZP has done the research, but if you're going to go through all the work to get your head ported, get the flow bench from your porter and hand it to someone who makes custom cams, with a description of your mods and your goals and he'll ask more questions and you'll get cams designed for your exact setup that will be faster than any off the shelf cam could dream to be.

 

Dunno if you mnetioned but the comp cams are regrinds and have a smaller then stock center circle. This will require a solid lifter since our stock lifters will not work

 

They're regrinds for the lsj? They're not for the L61. It is possible to get re-grinds that dont have a smaller base circle, not sure if comp cams can do it though.

 

according to zzp their cams arent regrinds

 

GM Ecotec Bolt-Ons - Cams And A Blower Make A 370 HP Mini Killer - Hot Rod Magazine

Might be exaggerated a bit but 36 flywheel hp doesn't sound bad!

 

normaly i would agree with you on your statement but the comp cams from turbo tech arent setup correctly and if you buy from comp directly they arent set up correctly either and getting cams disigned for your specificaly for your super charged eco application isent going to be setup correctly either due to the fact of the hex on the exhaust comp dont care about setting that correctly they just press it in and call it good

in all honesty the zzp cams are the best choice they have taken the time to put them in test them change up the cam events to get them dialed in to where they make the power then they call up comp get them ground to their specs and zzp also puts the hex in correctly their cams are drop in and tune no degreeing needed and i can honestly say they work

 

Right but does zzp have a cam designed for a head that sees 300 cfm at .500 lift on the intake and 215 cfm at .500, and know what header primary length you should run? Or are all their blower cams designed for the stock ports? I'm not saying buy comp cams, quite the opposite, comp cams are crap for all ecotecs. zzp seem to be nice if you have standard bolt on, or go turbo. But having someone design your cams then sending new stock cams out to get welded and reground (welding is what keeps the base circle the same), will give you better results.

What is this jazz about the hex on the exhaust cam? If thats for the cam sensor the precision required for that is minimal. All that does is let the computer know if the cylinder is on the compression stroke or the exhaust stroke and if its supposed to inject fuel and spark for this engine revolution or not. There shouldnt be any major engine functions timing off of the cam position.

 

this is correct, I was referring to the comp cams that are sold elsewhere

 

So zzp cams are the only ones that can use stock lifters? Anybody use the JBP cams?

 

ever start your car with no cam position sensor? it takes like 8-10 cranks and shoots a foot long fireball

 

junk, like their headers, and engines, and...well you get the point....

 

I actually dont have a cam position sensor, mine is faked off of the wasted spark ignition. How yours works is, it tells the computer if this is the power or exhaust cycle of the cylinder and that lets it know if it is going to give it fuel and spark or not. I've had to set up cars from scratch with this type of system, thats how it works. It still references crank for the injector firing angle and spark advance angle.

 

Sorry, assumed you had an lsj

 

man what do you think people are building pro fwd cars nope helll 95% of the sc owners are to scared to run cams. comp cams arent junk and the cams the cams zzp sells works period look at the power zzp is making no one else is even coming close to competing and as for the cam sensor on the ex cam it is very important that the hex be installed properly so you can time cps so the car will start and run as it should who wants to drive a car that is hard to start idles like **** and is a pain to drive if you think that you can get a cam custom ground and out do what we have available to us right now then i suggest you go throw the cash out and do it on a side note i do agree that a custom cam will out perform an off the shelf cam but in the eco world there isent enough of a demand to make that a viable option

 

Looks like I'll be getting zzps sometime this winter... I would rather pay than get shitty cams

 

Comp cams for the eco are junk. They sell 1 blower cam, and it is the stage 1 na cam for the intake and the stage 2 na cam for the exhaust. Their stage 3 na cam isnt bad though, I hear.

I still dont see why the cam sensor has to be timed, all it does is allow for sequential ignition and injection. If the non-sequential fall back tables are setup properly in the pcm (which HPT does NOT have access to), loosing the cam sensor would just mean the car would lose 4 mpg. BUT, yes, this isnt the case, so you need the cam sensor. That doesnt mean that the cam sensor has to be perfectly in time in order to do its job (unless the computer uses a know relation between the crank signal and the cam signal and uses it to determine if the sensor is broken or not).