Acree

iTrader: (29)

i read that the v8 that is included in the Q45 makes 340 horsepower and 333 lb-ft of torque. thats alot! and v8's are naturally more responsive to aftermarket mods, especially NA mods. my friend who has a 97 LT1 (Firebird TransAm) put in a cam, headers, exhaust, and intake, and gained a DYNO proven 115 hp. everyone who has sunk money into NA mods for the vq35 have received potent but minimal results and power increases. nothing like 115 of them! i was just wondering if someone had the funds/time/***** to do this, if it was possible and what kind of a power plant that thing could be made into?

ether

http://www.topsecretjpn.com/news/newgtr.htm

TS is doing it for the skyline..

Fall-Line

Anything is possible, provided you have the funds to make it happen.

The possibilities are endless! Is your cash supply?

hehe

Juztin

iTrader: (9)

I would personally like to see the VK56 in the Z, twin turbo'd as well

Although thinking about it, with a VK45 or 56, you still back at square one with the engine buildup. Rods, pistons, crank, heads, valvetrain, etc. You could probably just use the throttle body off of the VK45 or Titan models. But not sure what ECU you'd have to go with, although I'd imagine it'd be one of those cars ECU. The cost of the turbo's alone for each side would be probably in the 2k range each. (I'd look at GT42's). Not to mention trying to figure out how'd youd mount the massive tranny to it (which I think is only available in auto correct?) And how to cool all of it down with a larger radiator, IC as well. The costs would be quite high, but overall, you'd surely have one helluva fast Z with a "truck" motor

Daniel G

I suppose anything is possible. check out what these guys are doing....lol

http://www.vorshlag.com/ls1bmw5.asp

talk about a sleeper eh!

turbo-maxima

VK shares a lot of parts with the vq I think. They have the same size pistons and rods, valves, and retainers, and valve springs.

Vivid Racing

iTrader: (67)

Even if it is possible why not just spend the money on FI. The Z is heavy enough as it is. Plus the amount of power gained from aftermarket parts has a lot to do with how well the manufacturer tuned the car. If they did a poor job a the factory then you will see more gains than when trying to mod the Z

GPorsch

I would rather swap in a RB26DETT (skyline motor). Easier swap, more power potential, more parts readily available, more power stock, lighter weight.

azrael

You could swap anything in there with enough cash.

VK45DE, VG30DETT, SR20DET, RB26DETT, 2JZ-GTE, LS1, 13B-REW, ANYTHING if you want to spend the money.

However, no matter what you swap in there, you're solving a problem that doesn't exist. It's cake to make power with the VQ35DE. EASY. The block is strong as hell, and with the money you save by not doing a complicated engine swap, you can buy a forced induction setup and build the motor. Hell, even the stock open deck sleeves are supposedly good for over 500 RWHP. If your goals are beyond that, sleeve the block as well. You'll still spend much less than you would with an engine swap and bolt ons.

And to all the RB sackriders out there.. I've said it before, and I'll say it again. The RB does not have more "power potential." The VQ block is just as strong, and it has much larger displacement. The VQ head design is better and the valvetrain is a LOT better. The only difference is that the RB has had over 12 years of aftermarket development. Give it a year or two and see if you really still think an RB swap is the answer.

Juztin

iTrader: (9)

the displacement alone of a VK45/56 would net you so much more power at the same boost level as the VQ/RB. That's why I'd bother swapping with such a power plant than a 6 banger at that point. Plus if you went up the boost range; say even 1.5 bar, that car would simply be downright scary. Of course you'd probably easily be looking at dumping like 40k in the engine/fabrication/drivetrain. So at that point it'd be cheaper to go with the RB26 though lol.

I'd think it'd be a good setup for a pump gas kinda car if you still wanted insane power levels. I'm sure TS will have one heck of a beast when they finish it. Well provided the VK doesnt turn out to be a weak motor.

Good point Vivid, I'd definately worry about the balance of the car cause I'd say you'd throw off the overall feel of it.

Interesting concept though none-the-less...

Juztin

iTrader: (9)

very good point Azreal, I'd be interested to see what kinda numbers the cars start putting out as the built blocks get boosted. VQ35/43 wise that is.

HyperSprite

iTrader: (6)

Like VividRacing said about the mods, look at the 4.6L stock Mustang, 260hp.

Also keep in mind the two extra pistons need to go somewhere. Where they are going to go is further out over the front wheels, so your handling will suffer and you will need some kind of bulge to cover the monster.

Chris

ragtopz

well hypersprite, that is true but the gt is only a sohc. if you talk about the 1999-2002 dohc 4.6L mustang cobras, those made 320 hp and 317 ft/lb of torque.

anyways, it would be cool to see a v8 under a z.

personally, if i were to do an engine swap, i would go with the rb26dett also like GPorsch... but, i have no money so it is a moot point for me.

Vivid Racing

iTrader: (67)

The RB can easily be made to have over 1000 hp. I would take an RB over any other motor.

phoenixZ33

Did you see the Best Motoring video where they drove the Z33 with the RB26DETT? The car looked like crap.. heavy, unbalanced, turbo lag etc.. the following car in the video was the Amuse Z33, which in the opinion of everyone in the room watching was 5x better than the RB car - better weight balance, better sound, more linear powerband, better response and face it, an RB swap would probably cost $10,000 and all you're doing is taking the car back in time 10 years. Don't bring the "Well you can make 1200hp on an RB" into the argument. At that point you're talking about a non-daily driver, probably drag racer, so you might as well put it in a 240SX or something lightweight.

A VK45DE makes ~250rwhp on the dyno, seems like a lot of work to get an extra 10-15hp. Not to mention there's no guarantee that it will respond like an LT1/LS1 to mods either. Look at the Z33 engine, you don't get remarkable gains from bolt-ons.

azrael

Tell me how much you think it would cost to swap an RB and build it to 1000 hp. Seriously.

I guarantee that I could build a VQ35DE to that level of power for less cash. Much less. The RB won't make 1000 on the fully stock bottom end. It requires internals for that level of power, just like the VQ.

It would be ludicrous to swap an RB in for any reason other than to prove you can do it.

axxizzer

buuuttt

an SR30DET swap wouldbe intesting and lightweight!

Vivid Racing

iTrader: (67)

My comment was for those that were talking about swaping motors, not building one up.

G35sDriver

Ya I posted a similiar thread over at freshalloy and didnt really get to many responses. Im intrested in seeing if the V8 really weighs that much more than the V6. The results I was hoping for would be similiar to the IS430 (an IS300 with a GS430 V8). In swapping out the SJZ iron block, with the aluminum 4.3L V8, they only gained 2 lbs total (with a 100 hp increase).

BriGuyMax

iTrader: (4)

The difference here is you are dealing with 2 aluminum block motors...the V8 will definitely be heavier. Not to mention it's a small displacement V8 while the VQ is a large displacement V6....the VQ35 has MUCH more reasonable power potential than the VK45.