halcyon0

Hi alll,
I have a 2nd gen '94 4runner and am doing the 3.0 to 3.4 swap. Out of curiosity, what is the most hp that people have gotten out of this motor? Is 300+ too high of a number even with the TRD supercharger? BTW, the motor that I am using is a '98 3.4 out of a taco with a 5sp tranny.

Thanks!

WATRD

Do you mean at the wheels or at the crank? I am only aware of one 3.4 owner who has exceeded 300hp at the rear wheels who can prove it with dyno slips. He's got thousands and thousands of dollars into his setup, but it's the highest power 3.4 I have seen. Do a search of the TTORA forum for some threads where he talks about his set-up.

Otherwise, 300hp has always been a sort of holy grail for 3.4 tuners...

MTL_4runner

I know Dave (TRDOLMAN) broke that number on RWHP as well (you can definately do it but it's gonna be $$$$$$!).
https://www.yotatech.com/forums/f2/300-rwhp-trd-s-c-barrier-broken-63604/

There are a few turbos that are being tuned now which might also make a good run at the barrier but none have been dynoed yet to my knowledge. Take into consideration you'll also have to modify the tranny to handle all that HP as well so that adds a fair amount to the final costs.

WATRD

Psstttt... it's the same guy... I didn't know he was on here.

Greedy

Here is a dyno sheet from a turbo'ed 3.4L from over on custom tacos. Pretty good numbers!!!

WATRD

Who is that?

ebelen1

WOW!!!!! I would hate to be going that fast in a truck.

Greedy

His handle on CustomTacos is bputacoma (i think). It's a 2wd little sport truck yota.

midiwall

{knock knock knocking on my door...}

Dave's hit it (as has been said)... I'm getting close.

But like Gregg showed, that line's been easily broken with a turbo setup. Boost is cool as long as you can keep things together.


817 is Fort Worth if that helps.

WATRD

Really? The last dyno slip I saw from yours was disappointing. Let's see a more recent one

midiwall

Dude... I was N/A!

I can be on the dyno very soon - I have one more thing to add first (it's purchased & in the garage... Just waiting for me to find room to install it).

Any street racing will have to wait until after the VB work. I have my old tranny ready to be torn down as a donor, and the cash is more-or-less available.

I can give you a preview on Sunday... I think you'll find that it's a different truck than even what you saw last July.

DavidA

Hmmmm...817...that is here in my neck of the woods. Like to find him and see his setup.

AK95Taco

There is always the twin turbo that URD and F2uning built Here

Something like 800hp!! From what I understand this was done with a stock short block assembly too... Really though without some major drive train enhancement 300hp at the wheels is a good goal. That should be right around what that damn Dodge hemi puts out and in a 1,500lb lighter truck hauls ass.

midiwall

Yeah... Brian Trager (Gadget's west coast guy) is driving that, but that's a bit past the "over-the-counter" bolt-on stuff. Though the new turbo work that's happening here in Seattle is gonna be pushing 350hp at the wheels or more, and will be sold as a bolt on.

YT member Greedy (Gregg) is the donor truck. He's running and will be on a dyno next week if not yet this week. His thread's here.

This engine LOVES boost - it responds very well to big boost numbers as long as you can keep fuel in it. Gregg's engine is stock outside of the turbo (i.e., no camshaft, crank, piston or valve work). The mods are larger injectors, an FTC1E tuning module and the Walbro. I don't even think he's running headers.


Hmmm... the number I always hear being tossed around is that the stock block of a 5VZ is good past 500hp, some have said 600hp. I dunno if they're pushing Brian's past that without mods.

halcyon0

Hi all,
Thanks for all the great replies! I think I may just stick to the TRD supercharger and some simple mods. More power would be good, but not at the expense of dropping a down payment of a house on the truck and daily driving reliability!

midiwall

DO NOT DO IT WITHOUT THE FUEL MODS
exclamation point. exclamation point. exclamation point.

halcyon0

That seems to be the general concensus from everything that I have found online. Sigh...That just brings up the price...$2k for the SC and another $1k for the fuel mods plus another $1k for the water system (might as well right?) Gonna be lotsa months of eating top Ramen to save up that much cash for it!

midiwall

Yeah... I've been one of the local soapboxers about it for the last couple of years. Searching will get you a lot of soapboxing.


As for the misting system (btw, it's methanol part that you care about, not the water).. it's a stretch to put it into the "might as well" category. Moving to a mister brings up other issues. Yes, it will get you more power, but it's $1k that you can spend down the road. Off the bat, that $1k is better spent on a good exhaust system and headers. That's the first "next step" with a S/C, not a mister.

If you figure $3k for the S/C and one of the fuel mod options, you'll be fine. Then drop $1k on headers, $60 on a free-flow cat, $60 on a free-flow muffler, $150 to move to 2.5" piping (up from the 2.25" stock), and you'll be pretty set.

Given that you're gonna be running a 5spd, then I'll save you soapbox about the tranny mods.

halcyon0

Well, I am going to install headers and an exhuast system when I swap out the 3.0 to the 3.4. Now you have me worried....What transmission mods/fixes do I need to make to the R150 tranny? Will it handle the power?

rimpainter.com

Smart man!

Mark was saying that he WONT get on his soapbox because you have a 5-speed. Otherwise he would preach about the VB upgrade, and possibly the TQ Conv upgrade that he has been raving about.

As for the 5-speed, well, you may need a clutch depending on how you launch. I try to launch by letting the (OEM) clutch engage first, then flooring it (see slight buck) - as opposed to the traditional clutch-burn-stay-in-the-powerband launch that will eat a disc for breakfast.