To Trans or Not to Trans

[PsRumors]

Stats - '85 K20 Burb 350(cali), 700r4 NP208, 10 bolt, 14 bolt SF, 3.73

I have the 350 ready to come out just have to go get the hoist from my neighbor. I have a fresh 454 on the way, it will be here Monday. I am having second thoughts on the 454 and just do a 383. Either way it will have much more torque than stock. Will not have emissions equipment.

The trans shifts very good currently. But while I am here do I go ahead and change the tranny? If so, 700r4 or 4l80e? And if I do, who's? There are 100s of people building these trannys. I don't really have the money to do the trans but thinking it may be smart while I am here.

Any input?

 

[boz42]

i would run what u got till it goes out, u never know, it may last a while. projects can snowball & i am the world's worst about it. if u do the tranny now u will be w/ out your rig even longer.

 

[roadnotca]

Stats - '85 K20 Burb 350(cali), 700r4 NP208, 10 bolt, 14 bolt SF, 3.73

I have the 350 ready to come out just have to go get the hoist from my neighbor. I have a fresh 454 on the way, it will be here Monday. I am having second thoughts on the 454 and just do a 383. Either way it will have much more torque than stock. Will not have emissions equipment.

The trans shifts very good currently. But while I am here do I go ahead and change the tranny? If so, 700r4 or 4l80e? And if I do, who's? There are 100s of people building these trannys. I don't really have the money to do the trans but thinking it may be smart while I am here.

Any input?

Is that an original truck? If so, how many miles?

 

[PsRumors]

Suppose to be 80k original which is possible with the condition of everything.

 

[smokkey1]

I thought 3/4 subs came with th400's?
can someone confirm this...

 

[PsRumors]

My Options sticker in the glove box confirms it was available.

 

[roadnotca]

Just my .02 but I'd say; a)454/4L80e/D60/14b or b)383 or 350/700R4/10b. I think the 454 will destroy a 10b (weight).

 

[PsRumors]

Just my .02 but I'd say; a)454/4L80e/D60/14b or b)383 or 350/700R4/10b. I think the 454 will destroy a 10b (weight).

Either way I go future plans are D60 / 14b FF. Surely though an extra 300 lbs out front wont bring down the 10b (least for a while). I see so many of these vehicles with 35s winches and big bumpers running without any problems. I hope the 10b can stand for a while.

 

[roadnotca]

Either way I go future plans are D60 / 14b FF. Surely though an extra 300 lbs out front wont bring down the 10b (least for a while). I see so many of these vehicles with 35s winches and big bumpers running without any problems. I hope the 10b can stand for a while.

Rolling down the street, 300 lbs is 300 lbs. On trails, 300 lbs X drop starts to land like a ton. For a while is correct, right until the spring blows right through the axle tube, or the ball joints. 454,6.2/6.5,500C over a 10b = short life.