is 350 hp to the crank. not wheels to high to aim for without boosting or doing any internal mods such as cam or pistons?

 

yes, but keep in mind that from dyno to dyno the numbers can vary greatly.

 

My boy has every bolt on made plus cams and osirus tune and he is only at 285 at the wheels. You'll need cams and pistons, and maybe even a supercharger.

 

He is talking about crank so take like 15-20% off. I as well have a lot of boltons and would have been close to 300whp if all was completed but plans changed and the longblock was pulled out for something bigger.

 

why would you dyno at the crank?

 

I don't think it is a bad idea to talk about this at the crank as the only number that is known as of now is the stock crank horsepower, so the OP is looking for something 30% gain over stock, which is impossible without touching the inside of the block.

 

I don't think it's impossible without touching the block, I do think you need heads though. You'd need about 290-300whp for 350 at the crank. Using 350 at the crank as a goal is ridiculous though because you will be dynoing at the wheels. You just need a baseline dyno first.

 

I'm assuming when you say heads, you mean cylinder heads or are you talking about exhaust manifolds?

Talking about crank power is not a bad in this context as he is just getting a feel for the gains limitation of the engine over stock. Talking about whp introduces a highly debatable variable which is the huge differences in dyno readings between brands, calibration, and conditions.

 

why would heads = manifolds? I meant ported/polished heads.

The problem is that those same variables with dynos are what makes crank numbers useless. You need to do a baseline and the start modding, always using the same dyno to get your numbers.

 

Just making sure that you were not talking about headers, since people don't always make it clear what they are talking about.

Ported/polish cylinder heads would be considered engine internals on the second level. Most pepole would do bottom or cams before they even would nearly consider modifications to the cylinder head. Furthermore the benefits of doings so are very minimal without getting camshafts, and even so the gains wouldn't be very dramatic.

The point is that he doesn't even have those numbers and is generically asking if 350hp is too high, his baseline is stock published numbers. He is getting a feel for what to expect and probably whether or not it is worthwhile to go down this road.

 

Well if he likes the thought of staying N/A then I'd say go for it. 290-300whp, while expensive, is still in the realm of being worth it for someone who enjoys N/A power. Stroking the car is where the big bucks are...heck, you could even get away on the stock bottom end.

No matter what though, if he wants to know what his gains are...he needs to do a before and after. Also, get ready to have a REALLY loud car...lol.

 

If you stroke your car, the bottom end of the shortblock will change drastically. Trust me, that is what I am doing right now.

Agreed, that for every upgrades it is best to limit the variables as much in order to get the most meaningful data out from the dyno.

 

yea i definatly want to stay NA. and i know that when you dyno a car you are seeing wheel hp. but at the moment i do not know what the wheel hp is. i have an idea of what the crank hp is though. heads and cam are definatly an option later down the road. but for right now i just want to see what i can hit with only bolt ons. and if i am not satisfied then the heads and cam will be getting done. i also have plans on getting a base line dyno number done so that i will know what im starting off with

 

you're not going to put 70+ hp with bolt ons and NA. sorry

Guys on here that have dynoed 300 at the wheels NA (which would be about 345 at the crank with a 15% driveline loss) have put some serious cash into their cars. not just simple bolt ons

 

http://my350z.com/forum/na-builds/45...zcargarge.html

there's something to help bring you out of dream land. he's "hoping" for 360 after 4.15 stroker kit and TONS of motor work. It's probably 30 grand in the motor easily. Without the stroker kit he had a good amount of mods and only pulled in the 270's.

here's the 3.5 vq35de motor in fwd. only pulled 250hp with ported and polished head, cams, etc.
http://my350z.com/forum/na-builds/45...-na-motor.html

There are many more. It seems iwth every bolt made most cars are barely seeing a 50hp increase. If your car dynos at 230 then you'll be lucky to be in the 280's range and a huge hole in your pocket. You're going to have to build the motor, heads, cams to get anymore power.