Sorry if this has been discussed before but I did have a couple more questions to ask which I couldn't find any answers for specifically. Before I get flamed, I have read all the FAQs on G35Driver/my350z and have been researching other builds/components, etc. for a while. Just wanted some opinions for this "theoretical" build:


Goal: 440-460 RWHP

Engine:58k on 5AT & Nonrevup motor

Pre build:
Compression Test - Should be 5-10%
Leak down test - Should be 5-10%
Oil analysis done

If everything is OK:

Engine:
G35 ARP Main Studs
Arias Forged Piston Set 8.5:1 .020 Overbore
Eagle Forged Rods
Cosworth Head Gasket
Greddy Catch Tank
Snow Water/Meth Injection

Force Induction/Fuel/Management:
Vortech Supercharger V2 (used most likely)
2.87 pulley
440CC or 650CC Injectors
UTEC Engine Management
Walbro Fuel pump

Transmission:
SGP Valve Body Upgrade
B&M Tranny Cooler Fan


So the question is; will this be enough to reach my goal and if it is; will it be done safely (relative to other force induction engines)? Could I possibly get even more power out of it without resorting to a turbo charger? Will the I/H/E help a Vortech?

Is there any components I should add or remove to the engine build? One that I am a bit unsure about is the pistons since I am not sure if any shops in the city has a torque plate for proper fitment; so are the pistons critical when you go FI? Are there any other things that will most likely go when I go FI? Is a TQ Stall converter of any use besides launching the car and if I do get one; will it stress the tranny moreso?

When I get the 2.87 pulley installed; will I still need to move the redline to 5500 RPM even though the engine is "built" or can the blower itself not support speeds faster than 5500 RPM? If this is the case; would it be better to go with a 3.12 pulley? Will 440CC injectors be sufficient or is it best to stick with larger injectors?


Really interested in knowing so I can budget over winter and see if I can get this done or not in the spring. Thanks in advance.

 

440 cc injectors won't be enough. you should go for 550. also you should consider a T-Trim blower to reach your power requirements, especially if your are building your motor.

Also, mounting the Greddy catch can really doesn't work well. You need to mount it horizantally, but that is a pain with the vortech kit. I think I'm the only one that has done it, but you need to be careful.

Also you should not have to move your redline ever. The torque converter is just for drag racing, so you don't need it.

 

your going to grenade your transmission. get a built one.

 

well i pick up my car tomorrow from my vortech kit install and i used everything in ur list except for motor stuff... i have a spacer and cat back too... i was asking and hoping for 400-420hp..im staying with stock pulley for now but sure ill go to 2.87 soon

 

I would up the compression to close to stock if u want to make it ezier to get your goal of 460whp.

The tranny with upgrade VB and a good tranny cooler is good to somewhere around ~420lb tq so I doubt he will grenade his tranny, lol.

Also I would recommand upgrading the blower to a T trim bc the stock sc trim wont get u close without cams and nos. And like everyone stated, u will need at least 550cc with return line but I would go with 650cc to be on the safe side so u don't max out the injectors.

 

I forgot cams. OP you definitely want a set of JWT cams.

 

I was checking this out; and some of the shops have said a tranny that has never been on boost should be able to hold 550 RWHP with a Valve Body and a cooler; but if you go boost and the tranny has no VB; you will need to do a rebuild. My tranny is high mileage though so I am not quite sure either. There is a g35 5AT in the city putting down 600-700 RWHP with a Vortech and a stroker kit and I believe he only had a valve body and a cooler. Not sure though...

But I will check to see if my tranny is strong before I push forward to see if I need a rebuilt one.

 

Ah wasn't sure on the cams either; I guess I will add that in. Is a return line necessary if I have larger injectors (650 CC versus 550 CC and a return line) so my injectors will not be near 100% utilization?

S-Trim it will have to be then; there is one my350z going for a decent price but the damn CDN dollar has dropped too much; will need for it to go up before I move on.

Should my engine be strong enough to run a shot of NOS (50 wetshot) if need be? I do plan on taking it to the drag strip and am hoping for high 11s with slicks but I know there are too many variables to estimate this far out on 1/4 times for the G35s.

 

no G35 or z with a vortech has gone that high. The highet whp I've seen has been 500 with a stroker, full build, and t-trim blower

 

you will need NOS, probably at least a 100 shot to get in the 11's. You more than likely won't get above 450 to the wheels with your current mods.

 

Sweet let me know what the results are.

 

Hmm wow. Not sure what it is exactly but I think he mentioned it was a bit higher; I will check with him.

Here is his ride:

http://www.vortechsuperchargers.com/...?cat=4&gik=342

He got one of the tuners to come out to tune his ride this summer.

What do you think my current build would be putting to the wheels minus the NOS?

 

well, he may be in fact putting over 600 whp. He is running meth, which is the biggest difference compared to what others have done.

I don't think any of us can say how much you would make without NOS, since I don't know of anyone that has gone this hard core on the forum with a vortech and a 5AT. I think 450 whp would be a good estimate for you though.

 

Caawll teh docta'!

 

Thanks. I will hopefully be running meth as well so hopefully I can come close to my goal. I am going to go get the leak down test and compression test done in the next two weeks and see what will happen next . Hopefully the CDN dollar bounces back over winter...