By today’s prices that’s O.K. but better prices could be found.
If that axle is a CUCV 4.56 & Detroit Locker equipped than buy it today.
If the guy does not know have him pop the cover and take a few pics - we can identify for you.
CK5
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4.10’s or 4.56’s with 700r4, 35” tires
- Thread starter Chris Ziemer
- Start date
If that axle is a CUCV 4.56 & Detroit Locker equipped than buy it today.
If the guy does not know have him pop the cover and take a few pics - we can identify for you.
Here’s another one. 373’s, posi and still a 6 lug. $1000.
I’m certainly open to a 14 bolt….
14 bolt chevy posi rear axle
https://sfbay.craigslist.org/scz/pts/d/watsonville-14-bolt-chevy-posi-rear-axle/7768644413.html
I’m certainly open to a 14 bolt….
14 bolt chevy posi rear axle
https://sfbay.craigslist.org/scz/pts/d/watsonville-14-bolt-chevy-posi-rear-axle/7768644413.html
Funny you mention that, the original drivetrain in my old '80 K10 was a 350 / 4spd / 205 (of course) and 2.73's! Needless to say, when I bought it with 38's I HAD to use granny gear to get moving because it was a gutless wonder.
4.56 for a flat lander. 4.88 if it’s windy.
That is a 9.5" ring gear, 14 Bolt Semi-Float and a $500 axle at best with the disc brakes. But it is a very good option for upgrading your rear axle without changing wheels and tires once you weld on new spring perches and shock mount.
that is a SF semi-float. not a bad axle, already has disc brakes, not as heavy as the FF, doesn't hang as low. gear ratio is not optimal but that can be changed.
@Bent77 ran one in his truck with a doubler and wheeled it hard and it held up. I think it would be a good upgrade since you are going to run 35s. price may be a little high; just depends on what you are willing to spend
John and I had a buddy who had a 81 K-10 with the almighty 305, TH350/208, 10B/12B with 2.56’s !Funny you mention that, the original drivetrain in my old '80 K10 was a 350 / 4spd / 205 (of course) and 2.73's! Needless to say, when I bought it with 38's I HAD to use granny gear to get moving because it was a gutless wonder.
It was a pig with 31” tall tires goin down hill with a tail wind.
He immediately upgraded to 4.10’s and a rear L/S only to make another upgrade a year later to a 454 and standard issue CUCV 1-Tons with 4.56’s.
Feeling the difference between the motor and proper gear ratios you could not smack the smile off of his face.
Still in it
Seems to me that price is high
I would assume the seller is as well.
Or is trying to get that way
IMHO, the S/F 9.5” 14B should have been standard issue in all the K5’s & 10’s - it’s a great compromise between size and strength.
Good ring gear and fat pinion size, 33-spline axles that get pretty fat at the ends for a decent size bearing and the carrier is big enough so that all the components have enough meat & beef to survive some added power and tire upgrades.
Lot more beef than the 12 and especially 10b axles. Isn’t the CAFE standard for fuel economy adding weight though
IMO, 3.73 is not going to be a big enough change, so you'd still be looking at a gear swap. Are you set up to add spring pads and shock mounts at the correct angles? I can't really tell from the pics, but it kind of looks like the Summit discs have a parking brake, which increases the value. You can always make an offer. It sounds like you're not pressed for time.
I have 4.10s and no OD and want 4.56/4.88 gears for 35s
That's a lot of $$ for a 9.5".
They go between 200-500 local.
Skipped all the comments but I have 315/75R16 tires (35s) with 4:10 gears and a 6.2L diesel and 700R4. It puts my speedo real close to stock. Plenty of takeoff low end with the deep first gear and a good place to go 65-75 down the highway. I get like 17 mpg with my diesel too.
4.56's with a 350 and OD on 35's. Like everyone else said you might look at options for upgrading the rear axle at the minimum.
Can’t tell you all how much I appreciate your responses. I think the general consensus is that 4:56’s should work pretty well for me.
At this point, I’m going to just put those into my 10 bolt, but am well aware that they may not last as long as I’d wish.
After looking at 5 in Ca, it’s a grand to me, more or less, to pick one up. Buying and rebuilding (regearing too) a used 14 bolt, I think would run me at $2500, which incentivizes me to take it easy on my 10 bolt!
At this point, I’m going to just put those into my 10 bolt, but am well aware that they may not last as long as I’d wish.
After looking at 5 in Ca, it’s a grand to me, more or less, to pick one up. Buying and rebuilding (regearing too) a used 14 bolt, I think would run me at $2500, which incentivizes me to take it easy on my 10 bolt!
You could always look into some beefier axle shafts and a decent limited slip. Not sure if I'd lock a 10 bolt and go wheeling on 35's. Might live...probably not.
