Yes i used the search function

I decided to finally start saving for a vortec
kit for next summer to put on my 04.5z. Doing as much
research as i can to learn what i can, i cannot decide what
would be the most "beneficial" plenum would be
for gains in both hp and torque. i know my supporting
mods will be good enough for my goal

my goal is to break 400whp, as much as i would love to see
430 or so i figure that is just me day dreaming.

current mods:
k&n drop in filter with bumper air duct
kinetix plenum v+
s2 jwt cams
megan shorty headers
HFC's
borla all the way back
unorthodoxed UR pullies (yes i realise ima have to change
this back due to it being under driven)

as far as the v2 or v3 kit, i havent decided yet; still researching
which one would be best for the goal.

Im seeing alot of different numbers with alot of different plenums/spacers.
Any suggestions from the fi community?

Kinetix ssv
1/2 spacer
5/16 spacer
crawford
aps


any and all criticism is welcome

 

Don't forget you got the Cosworth Plenum. It is one of the more expensive ones, but it seems to provide good numbers and looks great. But for your goal, I would say all you would need is a spacer...maybe not even that. Save the dough for some gauges.

 

i have the powerlab 3/8 with my Greddy TT...only thing that sucks is trying to space the stock strut bar

 

ya im not worried about the strut bar. Ill try to find an aftermarket one that works later down the road. Which is why i mentioned the 1/2" spacer

The cosworth plenum is not impressive enough for that much money.
Looks very exotic and beautiful, but i have not seen the the dyno gains
to be worth the $; ironically coming from a guy that spent money
on headers and cams for minimal gain..

 

just spin on a dynojet and you'll get those numbers, probably going to be difficult to run that 430 whp on a mustang or DD safely

 

vortec w/ 2.87 pulley
upgraded injectors
plenum spacer
TP/HFC
Free flowing exhaust
Walbro fuel pump
RevUp oil pump
UpRev Osiris Dyno Tuned

...call it a day

 

I do remember a guy on here who did cams with a Vortech and got some great numbers, but I'm not sure if it was a Rev-up or not. I see you are doing cams also. I'm not sure if that is cost effective or not. That money could be spent on say a meth kit that will give you a solid 20 whp.

 

@umw350z I want to make as much true HP as i can
Haha don't want numbers

@sparklecityhop I will be doing all ofthose except
The oil pump. I'm probably going to do an oil 350z

@350z400rwhp ya the one thing I know is that
A lot of people that have the vortech on a stock block dont
Have cams and many don't have headers. I'm hoping
That with both of these with a 2.87 pulley I will push over
400. I just need to change the plenum up though.
I know there are much better options than what i have now
And I need a good solid answer for what would work best.
The spacer seems to be the most common answer but
What degree spacer ? 5/16 3/8 1/2?

 

As far as the Plenum selection, we have done some testing (not quite finished) with most major plenum options (including Cosworth), the preliminary testing showed that the Kinetix is a great option for FI. *hint*

 

Researching for the plenum spacer concluded that the 5/16" created the most WHP on an NA motor with intake/full exhaust. Not sure about FI though.

 

That's not what our NA Testing concluded, on a untuned NA with Intake, test pipes, and exhaust. Cosworth made the most, with our angled spacer 2nd.

 

Looking forward to seeing your plenum test results Rob. I have yet to see a back to back Kinetix Velocity plenum tested vs stock plenum w/ spacer on a boosted motor. If you want a 3rd party independent test, PM me. I don't mind paying for it in advance and the dyno time, but all I would ask is the option to return the product for a full refund no questions asked after posting results.

 

There's an older thread over on Driver where someone with a Vortech gained over 20hp from installing the Kinetix Velocity vise the stock plenum. I'll try to find it

 

PM Sent

 

not sure which one is the best but here's the bottom line about your setup:

plenum is a huge waste of money. 400hp is easily attainable and with a stock block that vortech will provide more power than the rods can handle. There are far more important things to spend that money on than the plenum.

I'm at 650 hp and i don't think the plenum is anything affecting my limit of power therefore it would be the last place i spent my money.

cosworth is about 1300 or so. Used haltech ems goes for about that on the forums and would provide so much more safety and tuning ability for your car. Money better spent.

 

Well said.
If you really feel the urge to do it, get a cheap spacer and call it a day. Cosworth intake is totally overkill for most vortech setups, and I'd say any stock block setup.
Besides I think Thom made just about 700whp through stock heads and pretty sure stock plenum.

 

thanks everyone for your input, ill definitely look into the ecu; thank you for that peice of advice (versus the plenum). Then ill definitely check out the kinetix velocity, thank you mr. rob

last question to get this over with. Haltech ecu vs osiris???? any thoughts?

 

^ unless you're making sure each cylinder is taking the same breath. But in Media there are some really awesome plenums. Oh, and some wires all over the bay as well.

 

depends on what your tuner prefers or is most comfortable working with. Have you picked a shop/tuner?

 

i personally would never spend all the extra money on a haltech for a supercharger.

the tuning is just so straightforward since boost is tied directly to rpm. My vortech ran perfect on my UTEC. UTEC is so easy to self tune but if you are going to pay someone, Uprev is the next cheapest solution.