Im looking to cam up my 3.5L . Ive done my research and put together a bunch of cams made for the VQ35 Motor. Only probem is i dont know exactly what the numbers mean and which cam would benefit me the most Mid-Top end power.

Cam. Adv. Dur. Dur @.50 Lift (in) Lift(mm)

BC Stg 2 . 264/264 222/222 .426/.426

JWT C2 261/261 225/225 .456/.456

JWT S1 260/260 222.5/222.5 .428/.428

JWT S2 256/256 219.5/219.5 .430/.430

Tomei 264/264 10.2/10.2

Nismo 262/262 .426/.426

BC Stg 3. 272/272 .234/.234 .425/.425 10.8/10.8


Im looking for the most power giving cam, i will be bringing up the idle and setting it higher. I dont mind the car being loopey at idle etc etc, just want powerrrr.

currently the car has
-Real CAI
-3" MAF housing
-Cattman Header
-Cattman Catback
-No cats
-Resonated test pipe
-Twin Ignition system
-IM spacers
-350z Injectors
-SSIM
-Port and Polished upper&lower manifolds
-Fidenza lightweight flywheel
-UDP
-Spec stage 2 Clutch

The cars rev limiter will be extended to 7500, and I am in the process of getting an EU (emange ultimate) on the car to have it tunned with once i get the cams in .

So What cams = MOST POWER.

Thank You

-Qazi

 

might want to add rod bolts to your list...I have the JWT C-2 cams that i am putting on my new motor,so really i have no data to go along with them yet, also, probably getting HR springs would be a good choice...

if looking for the most power, the highest lift will make your curve go up and the longer the duration the further to the right it will go (I think thats how it goes). Are you staying all motor or is there a chance you will go FI, if going FI then you would want a cam that will go well with boost,ie: the less overlap the better.

 

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Thanks for the info.

Im staying Na, ive thought about boost on several occasions even almost went ahead and bought turbo kit, but backed down and decided to stay na. This car will not see boost.
Im looking to get the JWT springs and retainers, i mean they are only like $250.

Also the ARP bolts are very cheap (price wise) I will be investing in those as well, Now since ill be installing the cams with the motor in the car, can i also install the rod bolts while the motor is in the car as well ? or is it to difficult ?

BTW your explination about the the lift/duration effect the power curve is exactly what i was looking for thanks, the JWT C2's are looking real good right now. How much did you pay for your set ?

 

i did mine while the motor was out of the car, but im thinking that you can do it while it is in the car. the upper and lower pan need to come off and you will need to be able to turn the crank and you can get it done.

i paid 1100 or so for the set

 

What's the $150 difference between the JWT springs/retainers and the Brian Crower?

http://www.briancrower.com/view.php?pn=BC0220

And where did you find the Stage 3 BC cams?

 

Slowboyracing.com has the Stage 3 BC cams... i dunno why the BC springs/retainers cost soo much more, i might just go with the complete JWT set-up, im ordering SOMETHING by friday lol.

 

I think it may be because the BC are titanium...are the JWT titanium?

 

jwt uses stock retainers

 

BTW: the stock retainers aren't steel as they aren't magnetic so they may be Ti factory ones...? this on on the 04+ FWD heads btw, and i know they have a different spring setup... my machinist thinks that they are indeed Ti

 

aha, I mistook the shims as retainers

 

Aluminum? or wait...that's magnetic, isn't it?

 

VQ30/Pathfinder VQ35 retainers = steel
GenII/III VQ35 retainers = aluminum

 

Bump... how much shoudl i look into paying to have cams installed on my 3.5 ?? i think im going with the JWT c2's

 

The best quote around us is ~$900. Let me know tho, we'll see what they charge if we bring 2 .

 

$800-1200 IMHO

 

I thought you were going to buy something on Friday...
____

Why the C2's? Specific reasons?

 

i was, but a buddy of mine said he knows someone at JWT so i might be able to get a good deal... ill be ordering right after new years ...C2 have the highest lift which IIRC was told will rpduce the most WHP and has a nice DUR.. which will keep the power constant throught the power band.

I really wanted to get the BC only becasue i can get a great price on them but i dont think they will give me the power i want.

 

Why are you not considering any of the other offerings from Tomei?

http://www.tomei-p.co.jp/inf/pdf/87_ae_Letter.pdf

 

nismovq35-Are you planning on a tune right after you get them installed?

 

With flat tappet cams (which we have) higher lift usually also = milder ramp rate so it stays at max lift for less time. It's not all about the numbers. All else being equal, a cam with a more aggressive ramp up will perform better than another cam, even if the specs are identical on paper.

 

What does this price include? Just the installation of the cams, or the springs and retainers too?

 

eng92 - i cant find a web site with tomei specs, even the link you posted i cant read the specs lol, plus its hard to get those i cant find someone or website here in the US that sells them.

nismology - i dont get it, care to explain a little further ? which ones would you reccommend for max whp ?

prjctmax - Yes, a tune will happen as soon as they are put in ASAP.

 

For max WHP I would recommend either the Tomei 280/272 combo or the GTM Stage 2 n/a cams. 3 issues off the bat though...

1. Your dynamic compression would be significantly lower so you would need to raise compression just to get that back to stock levels.

2. You need to tune the cam angle to get the most power out of them plus restoring some lost low end and midrange. There's basically more power to be had throughtout the rev-range with proper CVTC tuning.

3. Your stock bottom end wouldn't be able to handle the revs that are necessary to exctract max performance out of those cams.

 

GTM ?? Im trying to find the tomei cams and more info on them but im coming up with nothing. ill be tuning the car with an EU.

Thanks for the info.

 

ok found some info on the GTM cams, they look promising.

As far as the Tomei dont you think 280/272 would be a little much for a n/a setup ?

 

They aren't meant for boosted setups, so I say they are just fine for n/a. Depends on how extreme you want to go. You said max HP, so I responded in kind.

 

lol thank you.

I just got off the phone with GT motorsports (GTM) VERY HELPFUL PEOPLE !!

THey told me their stage 1 cams dynoed out 15-20WHP on the non-revup VQ35 .

And the Stage 2 which are BETTER, specs are 282/272 with a 11.0 E / 11.5 I.. lift. Said with the mods i have should yeild a Very high and good amount of power since i will be tunning with the EU and setting the rev limiter higher to obtain full power of these suckers, along with rod bolts and a rev-up Z oil pump. The total price is $1179, plus $300 for the S&R, plus shipping not to bad for maybe 20whp+ according to them !!

 

I don't think they're a good choice without building the bottem end, to be honest.

 

I'm guessing RB's are only a step towards 'building a better bottom end'.

 

Rod bolts are step 1(a) out of 5.

 

why not ? i know of some guys here in nyc running cams on stock 3.5 bottom ends for a long time. Is it becasue the GTM stage II cams are very aggressive ? Ive been told by guys down here running cams and Nitrious(75shot) that all they have is a GREAT tune and rod bolts and they have been spraying and running BC stage II cams on their cars for a little over 1 year.

Is there something i need to know lol ??

 

BTW i was planning on building a complete motor VQ35, bottom end balancing everything pistons rods, better HG, alot of P&Ping... etc, but i decided not to becasue of all the guys down here in NYC running all these bolt on cams N2o and still good on stock bottom end only with RB... ( plus i dont wanna spend to much $$$$ on doing up a motor just yet since im in the process of moving) but i cant WAIT to cam this thing up with a Great tune lol.

 

Can valve springs be changed without taking off the heads?

EDIT: I looked at the FSM, but couldn't get a definitive answer.

 

Yes. BC stage II cams are pretty mild and don't require a bottom end build at all. The GTM stage 2 cams and the aforementioned Tomei's require a build due to where they like to make power and the significant loss of dynamic compression.

 

Absolutely, they can! Just need to introduce compressed air into the cylinders so the valves don't fall in. Either that or stuff a bunch of shoe string (or similar) in there.

 

Thanks.