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Estimation of how much WHP my build will make?

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Old 10-08-2018, 09:53 AM
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Michael Zosa
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Default Estimation of how much WHP my build will make?

Hey all! I recently have built my VQ35DE for my 2003 350z Track Edition.
How much would you estimate my build will make after being tuned? I will be getting tuned by Saul in SoCal.
LIST:
nismo headers
hks rep exhaust
Berks Resonated Test Pipes
Plenum spacer 1/2 Inch
MREV2 intake manifold
ADMIN TUNING 3.5 inch intake
Agency power underdrive pulleys
11:1 compression Wiseco pistons
Bored out to 96mm (~3.535L)(over .020)
PORTED HEADS AND POLISHED
3-ANGLE VALVE JOB
Rev-up oil pump (higher rev-limit)
UPT stage 2.5 clutch
Lightweight flywheel

Internals:
Wiseco pistons
Eagle connecting rods
ARP Main + Head studs
ACL Race bearings
Cometic Head Gasket
Crank balanced, block bored and honed, block redecked, oil passages cleaned, etc

Thanks!
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Old 10-08-2018, 10:01 AM
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my guess is 279hp
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Old 10-08-2018, 10:45 AM
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So, did you do all of that headwork and just put stock cams back in it?
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Old 10-08-2018, 01:18 PM
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I'm interested in the results. When are you getting it tuned?

I'll guess 281.
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Old 10-08-2018, 01:31 PM
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Sorry to say, I suspect WHP will be less than you hope. Nissan did a good job wringing out the NA output when the VQ35DE was first released. Unless you're going to tune with 100 octane race fuel, I'll guess WHP with 91 octane fuel will be around 269, if that.
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Old 10-08-2018, 03:50 PM
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I agree with DK (for sure) but I think he'll go a little higher seeing that he has a oil pump & internals that can support higher rev, intake & exhaust track work, a slightly higher compression ratio, slightly more engine capacity, and a tune / tuner that can push the engine a little bit further than and OEM setup...
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Old 10-08-2018, 04:48 PM
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A stock short block, no headwork with cams will make more than a build w/o cams. I would just find another used factory longblock if your building because your current is dead.
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Old 10-08-2018, 04:53 PM
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On a dynojet (most accurate) with sae corrections in place, I'd say right around 275hp/260tq. The 3.5 intake will carry you above and beyond previous nat.asp. builds that didn't know about the benefit of a larger diameter intake pipe.
Consider the right cams for the intended purpose, a 75mm throttle body or larger and as I understand it, a Velocity intake manifold. I bet these will put you well into the 300/280 range.

Last edited by onevq35de; 10-08-2018 at 04:56 PM.
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Old 10-08-2018, 05:45 PM
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Most depends on who your tuner is. I've yet to see a 350DE NA go over 305 whp with exhaust and cams. LS2 is cheaper...
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Old 10-09-2018, 02:31 AM
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Thank you all. Reason I didn't go cams is because it was too expensive. The head work and all the machine work was done by a family friend whos been a master machinist for a couple of decades, so all machine work was basically free. I expect to make 270whp or around there, maybe more with the admin intake. Thanks
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Old 10-09-2018, 04:12 AM
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Originally Posted by jhc View Post
Most depends on who your tuner is. I've yet to see a 350DE NA go over 305 whp with exhaust and cams. LS2 is cheaper...
I have. Mine haha.
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Old 10-09-2018, 04:55 AM
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Originally Posted by Michael Zosa View Post
Thank you all. Reason I didn't go cams is because it was too expensive. The head work and all the machine work was done by a family friend whos been a master machinist for a couple of decades, so all machine work was basically free. I expect to make 270whp or around there, maybe more with the admin intake. Thanks
Be sure to come back and post what your results are- both low and high pulls.
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Old 10-09-2018, 05:25 AM
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Cams are where your big difference is going to be.

I did full bolt ons, admin intake + velocity stack, Kinetix velocity, 75mm TB, and tomei 272 cams with tomei springs and made 304whp/280wtq on a stock short block and no head work other than the cams and springs.
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Old 10-09-2018, 05:35 AM
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Originally Posted by RENFRO View Post
Cams are where your big difference is going to be.

I did full bolt ons, admin intake + velocity stack, Kinetix velocity, 75mm TB, and tomei 272 cams with tomei springs and made 304whp/280wtq on a stock short block and no head work other than the cams and springs.
And with higher compression/minor head work, you might've been 10-15 higher hp/tq which would be worth it IF you were tearing down the block anyway.
Curious, what exhaust r u running, from the block back?
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Old 10-09-2018, 05:41 AM
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Originally Posted by Michael Zosa View Post
Reason I didn't go cams is because it was too expensive.
You can always add them down the road and re-tune.

When do you anticipate tuning?
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Old 10-09-2018, 05:50 AM
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Originally Posted by onevq35de View Post
And with higher compression/minor head work, you might've been 10-15 higher hp/tq which would be worth it IF you were tearing down the block anyway.
Curious, what exhaust r u running, from the block back?
The game plan is to run wiseco 11:1 pistons and the other required bits in the near future. I figure that might put me a bit higher, but the long term plan is to run the new HKS V2 supercharger to get right around 500whp.

Currently running momentum headers, z1 test pipes, and the Motordyne TDX2 for exhaust.
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Old 10-09-2018, 05:56 AM
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Ah. Yeah, I know you're interested in the HKS V2. I'm sure you'll hit that target and then some.
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Old 10-09-2018, 07:07 AM
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I made 269 at the wheels on a dynojet on my '05 with the Admin 3.5" intake, 75mm NWP TB, Z1 angled plenum spacer, OEM headers, Berk HFCs, and Motordyne TDX2 on 93 octane.

I'm hoping you get a little higher than me with the added components.
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Old 10-09-2018, 07:20 AM
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At least 235whp
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Old 10-09-2018, 07:49 AM
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Originally Posted by 03threefiftyz View Post
I have. Mine haha.
Agreed, my friend. In the context that OP is asking this question, he is in the Novice category. I provided a Novice answer. You are clearly not a novice ; ) Enjoy!
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