travisamorgan

I got a 94 pickup 5 speed with the r150 tranny I think. I tried to do some research and couldn't find much. I plan to do the 3.4 swap soon but my 3.0 clutch is about gone and needs changed. I was wondering if the 3.4 clutch will fit on the 3.0? I would think it would with the 3.4 being a almost direct swap? or is there something I'm missing? I do plan to change pilot bearing and throughout bearing and maybe a new flywheel. Does the 3.4 flywheel fit the 3.0?

sorry lost of questions.

thanks Travis.

SacRunner

With a 3.4 swap, I went with 3.4 flywheel, 3.4 pressure plate, 3.4 clutch disk, 3.0 throwout bearing, pilot bearing is the same 3.0/3.4.

The general consensus is that if you use a 3.4 clutch, you need 3.4 flywheel and pressure plate (some will argue 3.4 starter also, but others say the 3.0 starter's teeth will match the 3.4 flywheel); the 3.4 flywheel and clutch combo are larger and have more mating surfaces which is why its recommended and also more expensive. Similarly, if you use a 3.0 clutch, you will need a 3.0 flywheel and pressure plate (and again, the same argument that you should match the starter to the flywheel). The main thing to take from this is that the flywheel, clutch disk, and pressure plate must all be for the same application (don't mix and match 3.0/3.4 parts).

This of course is bolting to a 3.4 engine, but I would assume it all holds true in regards to bolting to a 3.0 engine.

And just as aside, the 3.0 throwout bearing is needed with the 3.4 swap if you are keeping the 3.0 transmission, the input shaft and bell housings are slightly different lengths for 3.0 vs 3.4 so you need to match the throwout bearing to the transmission.

travisamorgan

ok so a 3.4 clutch, flywheel and pressure plate will bolt up to my 3.0? just use the 3.o throwout bearing? I don't want to have to buy a 3.0 clutch to use for a while then turn around and buy a 3.4 clutch and parts. I was wanting to see if I could save money, that's why im asking.

thanks travis

Innocent Fool

I agree with what SacRunner said.

The 3.4 clutch is bigger.
To use the 3.4 clutch you will also need the 3.4 pressure plate and flywheel.

I'm running a 3.0 starter in my 3.4 swap (with 3.4 flywheel) and have no issues with grinding etc... Teeth appear to match up when engaging but I haven't checked to see how far it is pushed in depth wise. The starter gear "might" not be pushing out far enough (eg:only running on 1/2 the width of the flywheel teeth) but I doubt it. I'm running it and it works for me

travisamorgan

ok so ill buy the 3.4 clutch and pressure plate and flywheel and bolt it to my 3.0 with the 3.0 throwout bearing.

any brand of 3.4 clutch that's good or just stay stock. anybody has any opinion on parts store clutches? they any good? I want the best for my money without sending a whle lot and I want to to last a while with light offroading and mostly city driving with a 6 hour trip every 6 weeks or so back from ohio into the mountains of west Virginia.

id also like to keep a good pedal feel. not too stiff.

I have looked at marlin crawler before but do they make 3.4 clutches?

thanks travis

SacRunner

Yep, that's where I got mine. Save yourself any possible headaches with online ordering and give them a call, tell them what you're doing and they'll get you the right parts.

travisamorgan

i saw a post on here somewhere about having to change the input shaft on the tranny to get the 3.4 clutch onto the tranny.

is it true?

Innocent Fool

Haven't heard about that but I didn't have to do that on mine.
I am running a 3.0 5spd trans with 3.4 clutch on 3.4 engine
Direct bolt up

j2the-e

If you switch to a 3.4 flywheel, you also need the flywheel bolts for a 3.4. They are shorter. No need to do anything with the input shaft. I have a marlin clutch and its great!

travisamorgan

ok. thanks for the tips on the bolts.

so the 3.4 flywheel has the same bolt pattern as the 3.0 flywheel?

j2the-e

Yes. When I first did my swap, I used the 3.0 clutch and flywheel. It didn't last very long

CheeseRind

Old thread, but did this end up working out for you?

I'm in the exact same boat (3VZ truck needing a new clutch, have a 5VZ swap planned down the line but just not there yet) and have the 5VZ clutch, flywheel, and pressure plate, along with the 3VZ throwout bearing and a new clutch fork. Everything looks like it should work (the 5VZ flywheel is a little thicker than the 3VZ flywheel so it's a little closer to the clutch fork but there's still clearance), and I just wanted to double check before putting the pig back in the truck.

If not, I guess we'll find out tomorrow and I'll be sure to post a followup.