Which tranny should i run?

[HotRodPC]

Everything in this photo is what the deal is, I got bad eye sight but isn't that a cross member already on there?

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Yeah, but that's 67-72 crossmember. It may work though. So how much is that set up? It looks pretty damn complete. Not sure that front Driveshaft will work either. I'm not sure of the specs on the 67-72 as far as frame and distances.

 

[1973 Chevy]

Yeah, but that's 67-72 crossmember. It may work though. So how much is that set up? It looks pretty damn complete. Not sure that front Driveshaft will work either. I'm not sure of the specs on the 67-72 as far as frame and distances.

Set up is asking $300, don't think its a bad deal really. That driveshaft I could just sell and make a couple bucks, I could break even or close to it by selling my 700R4/208

 

[bucket]

Looks like a deal to me. Even if you don't use the crossmember, shaft, or side mount, there's always buyers for '67-'72 parts.

 

[1973 Chevy]

So if I go look at this thing is there any real obvious signs of bad I should look for?

 

[HotRodPC]

I say good deal, and even sweeter if you can use that front driveshaft. Just look it over for broken casings. Anything past that, it can be rebuilt.

 

[crazy4offroad]

That driveshaft is a good one, if it's too long I would have it cut to fit. Hopefully the slip isn't worn out. Notice it doesn't have the front output flange, it has a yoke style double cardan. Looks like a great deal!

 

[GreaseDog]

NP205 is the best way to go, but find out what year the trans is out of. 80 & up is TH350C which means lockup converter, somewhat less desirable.

Th350c started in 82, and the only way you can get a 205 after 80 is from a 1 ton.

 

[crazy4offroad]

OK, I had recently got a TH350C/NP205 combo from a 1/2 ton Bonanza, possible it wasn't original.

 

[HotRodPC]

OK, I had recently got a TH350C/NP205 combo from a 1/2 ton Bonanza, possible it wasn't original.

What year did it come out of? Probably an 80 since NP205 was in all 80's, and 80 was the first year for TCC in Th350's. Whether or not Trucks got it for sure, but I've seen an 80 with TCC and 2 81's with TCC and the 80 GMC Light Duty Service Manual from GM does show Th350 to have TCC as OE.

 

[RetroC10Sport]

Interchange is showing the 350C in 1980 too...

http://i1259.photobucket.com/albums.../Group 4/1979-84illusIndex4-1_zpsa5f8ab54.jpg

Right there, 1980-84 TH350C.

 

[1973 Chevy]

It would be silly to start a new thread on a torque converter, but I need a torque converter so what "stall" would be suitable for me and what does that even mean?

 

[HotRodPC]

Stall, is at what RPM you can hold the motor without moving. Like doing a power brake or your truck, but not turning the wheels. Basically, it's how much will the converter slip before it must move. So if you're drag racing, and your power band is 2500-5000rpm, then to get off the line in your power band range, you probably want to leave at 2600-2800 rpm so you're right in your power band range.
What stall for you? That alll depends on what you're doing with the truck. If you're keeping a basic stock motor, then go with stock stall of about 1600 rpm. If you want a little more, I think you can get what's referred to as High Stall stock converter at about 1800 rpm. Keep in mind, the higher the stall, the higher the trans heat and poor mpg. For a daily driver, some recreational wheeling and maybe an RV cam, 1800 should be just fine. JMO

 

[1973 Chevy]

Thanks Hotrod, one more question is there way to tell how long an output shaft is on a trans without tearing the whole thing apart?

 

[HotRodPC]

Thanks Hotrod, one more question is there way to tell how long an output shaft is on a trans without tearing the whole thing apart?

I don't know the exact measurements, but you can usually figure out what it goes to by measuring the distance from the case without the tailshaft housing on it to the end of the output shaft.

To make sure I understand the question, what exactly are you getting at?

 

[1973 Chevy]

I don't know the exact measurements, but you can usually figure out what it goes to by measuring the distance from the case without the tailshaft housing on it to the end of the output shaft.

To make sure I understand the question, what exactly are you getting at?

I still havent bought a trans yet and I am still exploring my options, I went to a performance transmission shop and they asked me that they would need to know my current output shaft length so it will fit right my t case.