Lifting 77 k10 need HELP!

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

77_K10

Junior Member
Joined
Jun 7, 2015
Posts
3
Reaction score
0
Location
Pennsilvania
First Name
Aaron
Truck Year
1977
Truck Model
K10
Engine Size
350
I am going to buy a K10 and want to lift it and put bigger tries on it... I want to put 35" tires under my truck and want to put a 4" lift on it, will this even work? The other thing is I have have questions on the whole gear ratio thing. The truck has a 350 and 3.64 rears currently with a m-465 I think, is this okay for 35" tires? Thanks
 

firebane

Full Access Member
Joined
Jul 10, 2014
Posts
1,732
Reaction score
29
Location
Calgary, AB
First Name
Curtis
Truck Year
1974
Truck Model
K10
Engine Size
350
If its a mall crawler 4" will work. If you plan on going off road you will need a 6" which opens up a ton of stuff to do.
 

77 K20

Full Access Member
Joined
Nov 9, 2012
Posts
3,079
Reaction score
3,058
Location
Montana
First Name
Mike
Truck Year
1977
Truck Model
K20 5" lift
Engine Size
HT383 fuel injected
You sure about that gear ratio? I was only aware of 3.42, 3.73, 4.10 as far as common ratios.
 

MadOgre

Full Access Member
Joined
May 4, 2014
Posts
4,090
Reaction score
49
Location
NA
First Name
NA
Truck Year
NA
Truck Model
NA
Engine Size
NA
Ya not sure about that ratio but even if you have 3.42s with an SM465 and 35s you will be fine, might not be the peppiest but it will work.

You need a 6" lift minimum for 35s. If you are doing this to off road with it I would do 8" because you will want bigger tires down the road how ever not with anything less then 3:73s.

4" maximum tire size is 33" unless you are willing to sawzall off your wheel wells (also known as "Trimming")

However if you go with a 4" lift you could also do a 3" body lift which would give you 7" of wheel well lift. You can add a 3" body lift to any size suspension lift to gain an additional 3 inches.

Most guys don't like body lifts. Me included. But if you are building an off road rig then I would be all for it. The lower you keep your suspension lift the less drive line angle problems you will have

So for 35s a 4" with a 3" body lift would do nicely for an off road purposed rig or a 6" with a 3" body lift with say 38s or 40s

Custom bumpers work well with 3" body lifts
 

Letters

Junior Member
Joined
Jun 8, 2015
Posts
19
Reaction score
0
Location
WA
First Name
Dan
Truck Year
77
Truck Model
K10
Engine Size
350/sm465/np205
'77 K10 with a 4" lift on 35s.
 

Attachments

  • IMG_20140618_132124_033.jpg
    IMG_20140618_132124_033.jpg
    80.7 KB · Views: 76
Last edited:

77_K10

Junior Member
Joined
Jun 7, 2015
Posts
3
Reaction score
0
Location
Pennsilvania
First Name
Aaron
Truck Year
1977
Truck Model
K10
Engine Size
350
What do you mean by off road in its going to be a daily driver but I'll take it offroad on a back road home. That back road will involve short steep hills and lots of mid sized bumps... thanks
 

77_K10

Junior Member
Joined
Jun 7, 2015
Posts
3
Reaction score
0
Location
Pennsilvania
First Name
Aaron
Truck Year
1977
Truck Model
K10
Engine Size
350
Ya not sure about that ratio but even if you have 3.42s with an SM465 and 35s you will be fine, might not be the peppiest but it will work.

You need a 6" lift minimum for 35s. If you are doing this to off road with it I would do 8" because you will want bigger tires down the road how ever not with anything less then 3:73s.

4" maximum tire size is 33" unless you are willing to sawzall off your wheel wells (also known as "Trimming")

However if you go with a 4" lift you could also do a 3" body lift which would give you 7" of wheel well lift. You can add a 3" body lift to any size suspension lift to gain an additional 3 inches.

Most guys don't like body lifts. Me included. But if you are building an off road rig then I would be all for it. The lower you keep your suspension lift the less drive line angle problems you will have

So for 35s a 4" with a 3" body lift would do nicely for an off road purposed rig or a 6" with a 3" body lift with say 38s or 40s

Custom bumpers work well with 3" body lifts

I hate body lifts but I don't really want to do all The stuff that a 6" lift requires would a 4" lift plus a 1" body lift work?
 

hirschdalechevy

Full Access Member
Joined
Mar 8, 2011
Posts
726
Reaction score
513
Location
norcal
First Name
rich
Truck Year
1977
Truck Model
k-30
Engine Size
454
I would go with a 6" if you want 35's and with a 4sp. it will be ok with 35's , you can always put more gear in after the fact.
 

skysurfer

Full Access Member
Joined
Oct 23, 2010
Posts
2,654
Reaction score
2,051
Location
west coast
First Name
John
Truck Year
1989 Suburban
Truck Model
V2500
Engine Size
5.7/TH400/NP241C
There's a lot of guys around here running 35's on a 4" lift, me included. For the type of driving you described it will work fine. Just remember that if you get into more extreme offroading with gullies and boulders you'll have the front tires hitting the wheel wells.
 

MadOgre

Full Access Member
Joined
May 4, 2014
Posts
4,090
Reaction score
49
Location
NA
First Name
NA
Truck Year
NA
Truck Model
NA
Engine Size
NA
You can get away with a 6" lift and doing nothing but brake lines and 6 inches of steering correction 4 will do but a 6" raised steering arm is better. You can get away with the stock driveshaft as long as its not lifted more than 6" and you don't go too crazy with the articulation off road.
 

Latest posts

Forum statistics

Threads
42,625
Posts
919,349
Members
34,156
Latest member
Chype1
Top