The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1969 - 1972 Blazers and Jimmys Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 01-08-2014, 04:28 PM   #1
Somd72
Registered User
 
Join Date: Jan 2014
Location: St.inigoes MD
Posts: 18
Bigger

I want to go up to 40 inch tires this summer, how much lift will I need without trimming fenders
Somd72 is offline   Reply With Quote
Old 01-08-2014, 04:30 PM   #2
DemkoG
Registered User
 
Join Date: Nov 2013
Location: Suffield CT
Posts: 55
Re: Bigger

When i bought my blazer the PO had 40 on it 6 inch lift with a 3 inch body lift. seemed to work. have to add though I don't think it matters too much it had a D60 and a 14 bolt in it.
DemkoG is offline   Reply With Quote
Old 01-08-2014, 04:32 PM   #3
Somd72
Registered User
 
Join Date: Jan 2014
Location: St.inigoes MD
Posts: 18
Re: Bigger

Name:  image.jpg
Views: 230
Size:  90.4 KB
Somd72 is offline   Reply With Quote
Old 01-08-2014, 04:35 PM   #4
Somd72
Registered User
 
Join Date: Jan 2014
Location: St.inigoes MD
Posts: 18
Re: Bigger

I made the 4 in lift that's on it now with 35s, but I think if I'm going that big I'd rather buy a nice lift
Somd72 is offline   Reply With Quote
Old 01-09-2014, 03:34 PM   #5
SACRAMENTO 71
Registered User
 
SACRAMENTO 71's Avatar
 
Join Date: Aug 2012
Location: Sacramento, CA
Posts: 242
Re: Bigger

When I bought mine it had 40X16`s on it and the factory lift of a 4X4 K5
(4" or 6", i think 4") and as long as I did not turn all the way left/right it would not rub. That being said, the onlu wheelen I do is snow and Toyota Prius!!!

I think 6" or bigger should do the trick! First Pic is when I got it w/ the 40`s, 2nd pic is of it now w/ 38s. Nick
Attached Images
  
__________________
68 C10 SWB W/ 72 FRONT CLIP 343SB TH400
64 C10 SWB 406SB TH400
74 SUBURBAN 454BB TH400
78 K10 SWB 350 TH350 6" ON 35" BFG MUD
71 K5 350 W/ TBI 700R4 6" ON 38" BFG MUD
00 K3500 DRW BIG BLOCK "DRINKING PRBLM"
SACRAMENTO 71 is offline   Reply With Quote
Old 01-10-2014, 02:51 AM   #6
bouncytruck
SKINNY TIRES RULE!
 
bouncytruck's Avatar
 
Join Date: Sep 2001
Location: Bothell, WA
Posts: 11,049
Re: Bigger

I've had Blazers with 35's on 4" and 6" lifts. I'm guessing you'll need at least 10" for 40's if you plan on taking it off road. There was a guy around here who had 40" tires on a 6" lift. The tires almost hit the body. He said that the suspension was so stiff that the flex of sidewalls on the tires was the only flex. Sounds like miserable ride.

Keep in mind with a big lift and big tires you may need to upgrade your axles, re-gear, add cross-over steering and add more braking power.
__________________
bouncytruck 1972 K5
The Hauler 1994 K1500 Suburban
The Daily2010 Kia Soul
Wife's Ride2014 Fiat 500L
bouncytruck is offline   Reply With Quote
Old 01-11-2014, 09:00 AM   #7
Chulisohombre
Registered User
 
Chulisohombre's Avatar
 
Join Date: Sep 2013
Location: Bangor pa
Posts: 1,223
Re: Bigger

Bouncy truck has it right. You need at least 8-10 inch total Lift to get 40s under without Cutting. Or hitting the fenders With the tires Off Road. I don't really like body lifts Myself Because The added height over the frame that make it top heavy and put more force On the body off road. You already got The axles for the tires. Being on onetons it almost gives you a inch of lift over stock With the diameter of The axle tubes. A 6 inch with body lift like you have should be all you need to save the body and fit 40s for most situations. If you need a couple inches more go with 8 inch springs. Anything over 6 inch like you have now will probably need a custom driveshaft in the front and maybe rear. Also anything over 6 inch won't have much give in the springs unless you do a b52 kit up Front and move the shackle frame and Front spring mounts to get a Spring that flexes Better. The 40 inch stock spring Size already inhibits flex in the front already without arching it More for The lift You need. That or you can do a custom coil suspension if you have the time and money.

Last edited by Chulisohombre; 01-11-2014 at 09:08 AM.
Chulisohombre is offline   Reply With Quote
Old 01-11-2014, 12:54 PM   #8
bouncytruck
SKINNY TIRES RULE!
 
bouncytruck's Avatar
 
Join Date: Sep 2001
Location: Bothell, WA
Posts: 11,049
Re: Bigger

I guess I missed where it says he has 1 ton axles.
__________________
bouncytruck 1972 K5
The Hauler 1994 K1500 Suburban
The Daily2010 Kia Soul
Wife's Ride2014 Fiat 500L
bouncytruck is offline   Reply With Quote
Old 01-11-2014, 02:37 PM   #9
Somd72
Registered User
 
Join Date: Jan 2014
Location: St.inigoes MD
Posts: 18
Re: Bigger

1/2 ton axles, I'd like one tons
Somd72 is offline   Reply With Quote
Old 01-11-2014, 04:02 PM   #10
Chulisohombre
Registered User
 
Chulisohombre's Avatar
 
Join Date: Sep 2013
Location: Bangor pa
Posts: 1,223
Re: Bigger

Quote:
Originally Posted by DemkoG View Post
When i bought my blazer the PO had 40 on it 6 inch lift with a 3 inch body lift. seemed to work. have to add though I don't think it matters too much it had a D60 and a 14 bolt in it.
This is where you said one tons. I'm guessing the p o didn't give those yo you then. I thought you were saying this is what's in it. Then same goes with My answer. Add one tons for those tires or you will blow them up quick. 35 s broke my half tons with moderate wheeling. So go 6-8 inch spring lift with 2 inch body lift and you should be ok for fortys once you get the one tons. Otherwise you can only run 35-37 and not wheel hard.
__________________
72 3/4 ton blazer. 5 inch lift on 35 inch tires. 355 corvette engine with crane roller rockers, rv cam, edelbrock carb and intake with one inch spacer. Thrush Headers with flowmaster 40 duels. 4speed sm465 manual. 4 wheel disk brakes with Inboarded rear shock prerunner style mounts and shocks.
Chulisohombre is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 06:02 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com