NA 3.5L discussion

[Purdue3KGT]

How does it feel right now? Is it a drastic improvement or is it just a eh it feels a little peppier kinda thing? I was SERIOUSLY considering this swap if it had some decent returns...

[xwire]

Originally Posted by zkruly87

i've done the swap and yes it will fit. i'm actuall using the 3L crank right now. the 3.5L crank got damaged in shipping. and its been running great for over a month now

you are using a 3.0 crank in a 3.5 liter block??? don't think that is possible seeing as the 3.5 liters mains (64mm) are larger in diameter then a 3.0 liters crank (60mm)?

that would be one hell of an over sized bearing

[3g3000gt]

I'm gonna buy a vr4 and do the swap. my N/A will just be a grocery getter.

[3000hybrid]

Originally Posted by xwire

you are using a 3.0 crank in a 3.5 liter block??? don't think that is possible seeing as the 3.5 liters mains (64mm) are larger in diameter then a 3.0 liters crank (60mm)?

that would be one hell of an over sized bearing

Maybe he means his crank pulley was damaged in shipping and he's using a 3.0L crank pulley. Using the crank dosen't make sense to me either.

[3000hybrid]

Originally Posted by leesredgt

Ok im getting ready to do a 3.5 6G74 swap into my base 3000gt in the upcoming months and was wanting to upgrade to the six speed tranny since the engine is going to be out.

My question is,is the 6-speed tranny harness compatible with my base 3000gt engine harness.If not what is needed to make it work.

Also will i need a 6-speed clutch or can i use my 5-speed clutch?

- Your questions are kinda funny (not flaming you).

-You will need to swap to a 6 speeds flywheel,clutch,pressure plate
-6 speed shifter cables
-welded VCU
-output shaft blocker
-Search and find out which axles you will need

The harness should be fine for the reverse light switch. It's minor wiring if it's differant (I've only done AWD 5 speeds). It's not as easy as just swapping transmissions while the motor is out. And it does get a little pricey. I recommend to alot of my friends to keep there FWD tranny if the car is not a high powered FWD or daily driver. The AWD clutch parts tend to get expensive compared to FWD. The clutch pedal is murder compared to FWD. It does grab very nicely, but it's not worth it IMO unless you plan on making over 400whp.

[TUFFTR]

My question is this OK
To get 3000GT Headers (S/S) brought over from the US Inc postage is about $600AU, which is ok.
Ive been qouted $1000AU for custom extractors for this engine.
Which means, if i buy them from the US and get them shipped over i should have a $400 clearance to get them modified.

What i need to know is, what EXACTLY needs to be modified in the 3L DOHC headers in order for them to fit a 3.5L? is it alot of work? Will it be more then $400 of work is my main one...

please get back to me ASAP!

[StealthPanda]

Originally Posted by TUFFTR

My question is this OK
To get 3000GT Headers (S/S) brought over from the US Inc postage is about $600AU, which is ok.
Ive been qouted $1000AU for custom extractors for this engine.
Which means, if i buy them from the US and get them shipped over i should have a $400 clearance to get them modified.

What i need to know is, what EXACTLY needs to be modified in the 3L DOHC headers in order for them to fit a 3.5L? is it alot of work? Will it be more then $400 of work is my main one...

please get back to me ASAP!

Unless im mistaken, they wouldnt need any modification other than a little bit of an extention between the rear and front header connection under the engine.

like this



The bottom one has some spacers, to compensate for the larger deck height.

[TUFFTR]

Originally Posted by StealthPanda

Unless im mistaken, they wouldnt need any modification other than a little bit of an extention between the rear and front header connection under the engine.

like this



The bottom one has some spacers, to compensate for the larger deck height.

Awesome...
So, if i were to purchase these;
eBay Motors: OBX Exhaust Header 91-95 Mitsubishi 3000GT Stealth DOHC (item 370046447362 end time May-03-08 10:43:36 PDT)
, i would need them to be "extended"? and thats it?
I have no stock exhaust manifolds so yeah only way is this or custom

[StealthPanda]

Originally Posted by TUFFTR

Awesome...
So, if i were to purchase these;
eBay Motors: OBX Exhaust Header 91-95 Mitsubishi 3000GT Stealth DOHC (item 370046447362 end time May-03-08 10:43:36 PDT)
, i would need them to be "extended"? and thats it?
I have no stock exhaust manifolds so yeah only way is this or custom

From what i know yes, the cylinder heads on both cars are very similar, So the exhaust ports are generally in the same place, you may have to knock them around a bit, but in the long run you most likely wont have to spend much money if any on this.

[TUFFTR]

Originally Posted by StealthPanda

From what i know yes, the cylinder heads on both cars are very similar, So the exhaust ports are generally in the same place, you may have to knock them around a bit, but in the long run you most likely wont have to spend much money if any on this.

Cheers mate.
Sort of hard gathering this info when your the only one in the country doing it:P
the heads are the same as 3000GT ones, so thats ok, the only thing i was concerned about was the angle of the V etc since it was indeed higher.
Cheers anyway for that advice, but if anyone else has something to share about it please do...
i wont be buying these for about a fortnight