Aight guys I'm tired of trying to look through cam sets for the HR, its been a pain and it looks like there is very few options for Turbo cams for the VQ35HR.

What have you guys been using with solid gains? In my old DE builds finding a good turbo cam wasn't a problem at all, apparently its a lot less easy on the HR.

The shop doing my build had a problem with another customers VQ35HR and a BC Stage 3 (I believe) cam where it wasn't working. BC ending up taking the cam back, and acknowledging an 'issue' or something to that nature.

They are instead going with a Tomei VQ35HR cam. I can't seem to find specs on the Tomei cam's and if they have some low duration for turbo application. I know GTM seems to have good cam specs, the only damn problem with them is they will not return my calls to talk about their cams after 3 different days calling and leaving messages.

So options?

#1 GTM (would be great if they returned my call to discuss this - I'm getting very tired of trying to reach out to them, you'd think they call back for a $1K+ part)
-Did anybody ever run the stage 3 288 cam on their car? impressions? (other than that of what I believe is SAM's car at idle with 288 cam)
-Has anybody had issues with them sending the wrong cams etc? I'm wary of the rumors of wrong parts etc, and certainly don't want my shop to be playing tag with them back and forth on parts.

#2 BC - Iffy as shop was having issues with the cam set not matching up on another car after some retries with BC they took it back and cited there was some sort of issue and left it at that with a refund...

#3 Tomei - I can't find any duration specs or if the cams are even made for turbo applications in mind? Anybody know?

#4 Kelford - They don't seem to make a VQ35HR cam from their current site products... Only have VQ35DE (REV-UP) 272/288 turbo cams...

 

- I've heard that GTM is easier to reach by email, but by phone unless you're spending a couple grand for their larger kits or builds it would be hard to reach them. Personally, I've called them twice and been able to reach someone after one or two calls. Try emailing: info@gtmpower.com (Mike)

- Tomei makes 264/272/280 for the VQ35HR. Here's a spec sheet for reference (in Japanese but the numbers are all visible) http://www.tomei-p.co.jp/inf/pdf/nri132.pdf

- In case you're interested in a Cam shootout comparison for various 264 and 262 cams: http://www.modified.com/tech/modp-10...m/viewall.html - believe it was based off a DE but numbers are comparable for an HR.

 

Any reason JWT is not on the list? I dont know crap about cams. They were the only option for Titans, and got great reviews.

 

For the VQ35HR, I believe JWT only makes the C1 cams, which have a 262 degree duration.

 

Tomei common grinds are 264/264

272 seems to be a good size for some people. It will slightly move your curve to the right. Make sure you list your power goals so you do'nt get a high peak hp cam if your application is a nice smooth low/midrange.

 

OP - If you'd like a dyno chart of 264's (Tomei) installed on the HR , pm me.

 

Thanks Binder,

Power gains are for about a hopeful 510-ish wtq and whatever the HP is at that level uncorrected at approximately 6000'. (Albuquerque, NM)

9.0:1 compression built VQ35HR upped to 3.7L with the VQ37VHR crank and aftermarket rods/pistons, stock heads, 91 octane, GTM stage 2 TT

I'm not to worried about the power shift very much to the rigth, its just a weekend have fun kinda car so if I'd have to say whats more important of power curve vs. peak, I'd of course like both We'll need to see if we can actually hit 500wtq uncorrected at this altitude on 91. I'm still wondering if the turbo's will be falling off, or if a big cam like a 272+ would really help them out.

Car is mainly used as a highway roller, doesn't see road courses nor the strip, if that helps on the importance of where the power band is as the rpm when I get on it is usually in the 5K+ range on a rolling fun run.

Hoping to squeeze in ~16psi, unless if the power is hit before, lower psi would always be better, whichever comes first, but of course if 91 will be a huge limit, then so be it and we'll need to make due with what we can work with without switching to a higher octane fuel. Just shooting for a simple stop at the gas station and fill up at the pump kinda setup. E85 isn't anywhere near as popular as in say CO where I moved from, so that's out of the question for me.

On stock long block ~10psi w/ 91 the car was doing about 415 wtq with about 430 or so HP uncorrected (487/505 with the crazy CF). Ultimately will come down to what we can get away with on 91.

 

Thanks Suwaidi, I'll try the email route, haven't yet bothered that way; worth a shot. Thanks for the link as well.

You've got a PM.

 

It's an option certainly. Just curious on what most turbo peeps have seen as a good combination.

Also wondering if there is really a big difference between say a cam advertised as a specific turbo cam vs. a n/a cam or general application one. I'd imagine GTM wouldn't go through that effort for nothing, if nothing else looks like the duration is less than stock in stages 1-3.

 

Also the only cam comparison I've seen from some quick searching was a built motor w/ APS TT and Nismo Cam vs. same setup + bigger fuel sys and a GTM turbo cam:



IIRC 14psi in both setups, although the thread doesn't seem to say what stage of turbo cam.

http://g35driver.com/forums/forced-i...g-results.html

 

I'm running the Tomei 264's on a 3.8 stroker with the GTM Stage-III TT kit on my HR. The only reason I have the cams is that they were part of my NA build and I just decided to leave them in there ( lots of porting and polishing was done as well ). Even with the bigger GT3071R's, they spool up super quick and I have to believe the cams have a small part in that. I've got NA and boosted dyno charts if you need 'em. I'm in the mid 600's whp at only 15psi.

 

if you are at 415 at 10psi then you shouldn't have any issues getting 500 on the built engine with 91.

If it's a street machine I would go with a less aggressive cam setup. These heads and stock cams have been plenty to get into the 700hp range. I run a tomei 264/264 cam on my 652hp. Like the other guy above, I wouldn't have messed with cams and heads if I didn't get them in a deal with my block. Truthfully I think for anything under 700hp cams are a poor investment due to cost verses benefit. It's not like the huge improvements the LSX guys get from cams and heads.

 

do you still have the dyno charts of the na 3.8l with cam setup? id very much like to see what it is as im about to pull the trigger on built block

 

No problems here with Tomei 272's

 

Thanks for the responses guys, I ended up going with GTM stage 2 (272) - just took what felt like an act of God to get them to get ordered and shipped from GTM... and the engine is in the process of getting put together. It'll be coming together over the next couple months and I'll post uncorrected # results. (We're at 5K+ feet ASL so don't want to throw off #'s including shitty high CF's)

 

I have taken flak in the past for my constant bashing of GTM but I don't care...hope I help someone along the way...

Yes, GTM is a hug RIPOFF! My threads are elsewhere, you can read them...Sam at GTM took my 26K for a long block/TT setup and after 1.5 yrs, he only had a shortblock finished....Got a lawyer, he gave me my **** and took the car elsewhere...In the 1 yr since then, I have lost/had stolen, over 5k in parts from GTM. Sam even built my stroker block w/o proper clearance and the engine wouldn't even turn over after it was installed by another shop....WHAT A COMPLETE A-HOLE. He had PAINTED items I asked to be ceramic coated thereby cheating out of more money..I had to recoat all the parts...He wouldn't retun my HR conversion cooling system to fit my DE and when the other shop asked for it, he replied "why should I help him"? CAUSE IT'S THE RIGHT THING TO DO MF'R!!! Never did get those parts (900) and new shop had to remake them....headlight ballast and wiring was missing, c,losed dumps for waste gates were missing starter was missing etc etc....

Don't believe the hype and BS Sam puts out....I continue to bash his azz cause I have no way of collecting my lost money/parts...(attorney wanted 5k just to begin looking in to it)...

So, this is how I extract my freaking pound of flesh sam Coksukr Zawahara...U f'd me over so until the day I die I will CONTINUE TO bash ur azz everytime I get the chance......

U need some lead n ur diet but I ain't goin' that far...

STAY AWAY FROM GTM FOLKS...LEARN A LESSON FROM ME!!

 

Yea ^ I visited their shell of a shop in person and after seeing it first hand and having very first hand experience with their lack of communications I have decided to not utilize any more GTM products on my build, I seriously doubt they will be around much longer.

I did somehow manage to get the GTM stage 2 turbo cams out of them somehow, but it took a couple months of back and forth emails between the original shop building my car and them before they arrived.

I've since moved shop builders to TC Performance out in Colorado and the motor is coming together now so should hopefully have some dyno's up in a couple months once the car is completely back together, broken in and tuned.

It's a huge shame, their GTM TT kit I have is very clean, and I've owned both the Greddy 18 & 20G as well as APS TT system as I've had 3 different 350z's since they first came out so I've seen a few turbo kits first hand. I really like the GTM kit a lot, but can't imagine that place I visited produced anything like the product I had with the super slick cast manifolds etc.

Shame really, as we are the ones that lose out on being able to get top shelf parts for our builds. I may undertake trying to get a GTM intake manifold working on my car with my current builder in CO, but not too really looking forward to it as I imagine it would be a bit of $$$$ to even bother undertaking.