Register or Log In To remove these advertisements. |
|
|
|
Thread Tools | Display Modes |
01-23-2013, 08:29 PM | #1 |
resident oilfield trash
Join Date: Jan 2009
Location: Lubbock TX
Posts: 1,465
|
Lifting my 90 model k5
I recently bought a 1990 k5 blazer. 86k original miles efi 350. I want to lift it enough so that I can run 35's what is the most cost effective way to get there? Also how much lift do I need? I also want to keep my gear ratios as close to stock as possible for gas mileage purposes so what do I need to re gear to? Thanks in Advance for the help
Posted via Mobile Device Posted via Mobile Device Posted via Mobile Device
__________________
1967 SWB C10 396/400 factory air factory tach (sadly had to send to a new home) 1986 Honda 70 Fourtrax 1991 Chevrolet K5 blazer 2wd 1982 Mastercraft Pro Star 190 Stars and Stripes 2002 Chevrolet Tahoe 2011 Nissan Armada |
01-23-2013, 08:58 PM | #2 |
I know the pieces fit
Join Date: Nov 2007
Location: MONTGOMERY, AL
Posts: 5,523
|
Re: Lifting my 90 model k5
4" spring front, block rear. 4.11 gears will put cruise rpm at 70 mph at 1,933 rpm. Might be a touch low for a brick up in the breeze at speed. 4.56 gears will raise engine rpm at 70 mph to 2,145. That should be enough to keep it from downshifting constantly if the engine is healthy, but I haven't done it myself to know for sure.
|
01-23-2013, 09:05 PM | #3 |
resident oilfield trash
Join Date: Jan 2009
Location: Lubbock TX
Posts: 1,465
|
Re: Lifting my 90 model k5
I think in that case ill run 456. Yeah motor is beyond healthy. What should I expect to spend on gears
Posted via Mobile Device
__________________
1967 SWB C10 396/400 factory air factory tach (sadly had to send to a new home) 1986 Honda 70 Fourtrax 1991 Chevrolet K5 blazer 2wd 1982 Mastercraft Pro Star 190 Stars and Stripes 2002 Chevrolet Tahoe 2011 Nissan Armada |
01-23-2013, 09:09 PM | #4 |
I know the pieces fit
Join Date: Nov 2007
Location: MONTGOMERY, AL
Posts: 5,523
|
Re: Lifting my 90 model k5
$400 to $500 in parts for a front and rear gear swap full kit, another $400 to $500 in labor to change the ring and pinion front and rear.
|
01-23-2013, 09:28 PM | #5 |
resident oilfield trash
Join Date: Jan 2009
Location: Lubbock TX
Posts: 1,465
|
Re: Lifting my 90 model k5
I don't believe in paying for labor
Posted via Mobile Device
__________________
1967 SWB C10 396/400 factory air factory tach (sadly had to send to a new home) 1986 Honda 70 Fourtrax 1991 Chevrolet K5 blazer 2wd 1982 Mastercraft Pro Star 190 Stars and Stripes 2002 Chevrolet Tahoe 2011 Nissan Armada |
01-23-2013, 09:30 PM | #6 |
resident oilfield trash
Join Date: Jan 2009
Location: Lubbock TX
Posts: 1,465
|
Re: Lifting my 90 model k5
Posted via Mobile Device
__________________
1967 SWB C10 396/400 factory air factory tach (sadly had to send to a new home) 1986 Honda 70 Fourtrax 1991 Chevrolet K5 blazer 2wd 1982 Mastercraft Pro Star 190 Stars and Stripes 2002 Chevrolet Tahoe 2011 Nissan Armada |
01-23-2013, 09:34 PM | #7 |
I know the pieces fit
Join Date: Nov 2007
Location: MONTGOMERY, AL
Posts: 5,523
|
Re: Lifting my 90 model k5
I don't either. My latest gear/posi is being done on favor for favor trade - best way.
|
01-24-2013, 01:14 PM | #8 |
Registered User
Join Date: May 2012
Location: Colo Springs, CO
Posts: 870
|
Re: Lifting my 90 model k5
2.5" BDS front leaf springs, 2.5" blocks in back.
35" tires on 15" wheels. At 70 MPH with 3.73 gears, I am at about 1,800 RPM's and it does downshift if I go up any grade.... I do rub on my front fender if I turn sharp while hitting a bump. 4" lift would probably solve that but I prefer it lower.
__________________
- Jeff 89' K5 Blazer, 2.5" lift, 35" tires 04' GMC Yukon XL, 3/4 ton, 8.1L |
01-24-2013, 01:21 PM | #9 |
Registered User
Join Date: Oct 2011
Location: hudson,wi
Posts: 805
|
Re: Lifting my 90 model k5
I have 4" of suspension and 2" of body lift to fit my 35s..... I curerently have 3:42 gears but plan on swapping to 4:56s for the proper driving rpms... My engine is a very healthy balanced and blueprinted 350.
RIZ |
01-24-2013, 03:25 PM | #10 | |
resident oilfield trash
Join Date: Jan 2009
Location: Lubbock TX
Posts: 1,465
|
Re: Lifting my 90 model k5
Quote:
Posted via Mobile Device
__________________
1967 SWB C10 396/400 factory air factory tach (sadly had to send to a new home) 1986 Honda 70 Fourtrax 1991 Chevrolet K5 blazer 2wd 1982 Mastercraft Pro Star 190 Stars and Stripes 2002 Chevrolet Tahoe 2011 Nissan Armada |
|
01-24-2013, 03:29 PM | #11 |
Registered User
Join Date: Nov 2012
Location: Salt Lake City, UT
Posts: 520
|
Re: Lifting my 90 model k5
Mine has a 4 inch lift by Procomp. Springs in the front, blocks in the rear. 35x12.5 R16 tires don't rub.
Also, an alternative do the blocks would be a shackle flip. I wish I would have done that instead of the blocks. |
01-24-2013, 06:06 PM | #12 | |
Registered User
Join Date: May 2012
Location: Colo Springs, CO
Posts: 870
|
Re: Lifting my 90 model k5
Quote:
U-joint life? Axle wrap (and how can you tell)? Etc. A lot of people "say" the leaf lift is preferable but why? Thanks!
__________________
- Jeff 89' K5 Blazer, 2.5" lift, 35" tires 04' GMC Yukon XL, 3/4 ton, 8.1L |
|
01-24-2013, 06:08 PM | #13 | |
Registered User
Join Date: May 2012
Location: Colo Springs, CO
Posts: 870
|
Re: Lifting my 90 model k5
Quote:
I assume just two leafs up front....correct?
__________________
- Jeff 89' K5 Blazer, 2.5" lift, 35" tires 04' GMC Yukon XL, 3/4 ton, 8.1L |
|
01-24-2013, 07:43 PM | #14 |
Registered User
Join Date: Jul 2010
Location: jacksonville nc
Posts: 1,229
|
Re: Lifting my 90 model k5
if you have the cash i would go with something other than rough country, the price is right on them but takes them forever to smooth out, they live up to their name when it comes to rough....my k10 has a 6 inch lift (i ordered a 4) and its a rough ride...but my 35's fit under there nice and sweet...thing is tho i got those 35's with some 3.08 gears with the th350 tranny, not cool going down the highway and its super slow outta the hole
__________________
Sgt Dennis Heineman USMC Aviation Ordnance I.Y.A.O.Y.A.S 2001-Present 84 K10 2000 trans am ws6 2011 nissan altima 2009 Troy Built with a 42 Inch Deck My LS Swap http://67-72chevytrucks.com/vboard/s...=1#post6559371 |
01-24-2013, 07:57 PM | #15 | |
Registered User
Join Date: Oct 2002
Location: Edmond, OK
Posts: 5,904
|
Re: Lifting my 90 model k5
Quote:
A lift leaf pack will be arched more than the stock spring with a block and have less leverage, therefore will better counter act the torque load. This may also help the rear u-joint life since the pinion of the axle will not be snapping up and down violently. A shackle flip provides the lift, keeps the stock spring for a better ride and flex (less arch = better flex) and since the leverage between the axle and the leaf pack has not change (other than due to tire size) it is not as likely to cause axle wrap as a block would. They make traction bars and add on leaves that are meant to counter act axle wrap as well.
__________________
Jon 1982 Chevy Silverado 350/th350.... RETIRED 1993 Jeep XJ 2 door(Cherokee) 4wd 4.0ltr/AX-15 (5spd)/NP231 .... Oklahoma Roll Call |
|
01-24-2013, 09:54 PM | #16 |
Registered User
Join Date: Dec 2012
Location: wabash, in
Posts: 62
|
Re: Lifting my 90 model k5
i had 35s on a 4 in lift no problems with turning or anything
what transmissions you guys running to get the lower rpms at 70mph i have sm465, 205, 3:73 and i think it runs about 2100 2200 at 55 |
01-24-2013, 10:20 PM | #17 |
Registered User
Join Date: Jul 2010
Location: jacksonville nc
Posts: 1,229
|
Re: Lifting my 90 model k5
i believe they have the 700's...overdrive
__________________
Sgt Dennis Heineman USMC Aviation Ordnance I.Y.A.O.Y.A.S 2001-Present 84 K10 2000 trans am ws6 2011 nissan altima 2009 Troy Built with a 42 Inch Deck My LS Swap http://67-72chevytrucks.com/vboard/s...=1#post6559371 |
01-25-2013, 11:27 AM | #18 |
Registered User
Join Date: May 2012
Location: Colo Springs, CO
Posts: 870
|
Re: Lifting my 90 model k5
Yea, 700r4.
Be careful with 3.73 gears. Just because they are higher doesn't necessarily mean better gas mileage with larger tires. Mine has to work pretty hard to get the thing rolling down the road. My MPG is about 11. I met another guy who has 33 inch tires and went from 3.73 to 4.56. His mileage went from 11 to 14. So keep that in mind as you analyze gearing.
__________________
- Jeff 89' K5 Blazer, 2.5" lift, 35" tires 04' GMC Yukon XL, 3/4 ton, 8.1L |
01-25-2013, 09:13 PM | #19 |
Registered User
Join Date: Jan 2013
Location: Jasper, IN
Posts: 948
|
Re: Lifting my 90 model k5
Also depends on the motor, th350 4.11's 35's i get about 13 highway. Hopen my 465 swap and 3.08's will counter it and help...
Posted via Mobile Device |
01-25-2013, 10:26 PM | #20 |
Registered User
Join Date: Dec 2012
Location: wabash, in
Posts: 62
|
Re: Lifting my 90 model k5
you will get better mileage with 465 and 3:08s?
|
01-25-2013, 10:33 PM | #21 |
Registered User
Join Date: Jan 2013
Location: Jasper, IN
Posts: 948
|
Re: Lifting my 90 model k5
With my 350 n 4.10's im crusin at 3,000 rpm. Both final drive's are 1:1 so i'll be crusin at about 1900 with 3.08's. more in my power range. At 3k my motor is about topped out. With the 4 speed i'll have my town gas milage, as the gears one lower in the tranny, but one higher in the axles make up for it... Hard to explain on here lol. Woth my 350 n 3.08's it's too high in town so it'll make up for it. This's my cruiser not my toy.
Posted via Mobile Device |
01-25-2013, 11:01 PM | #22 | |
just can't cover up my redneck
Join Date: May 2004
Location: Columbus OH
Posts: 11,414
|
Re: Lifting my 90 model k5
Unless you know someone willing to trade you labor for something else, make an exception on this one. This is not a job to tackle yourself, it is best left to a pro.
__________________
You can review the site's rules here. Quote:
Bad planning on your part does not necessarily constitute an instant emergency on my part.... The great thing about being a pessimist is that you are either pleasantly surprised or right. |
|
01-26-2013, 09:37 AM | #23 |
Registered User
Join Date: Jul 2010
Location: jacksonville nc
Posts: 1,229
|
Re: Lifting my 90 model k5
^^^^^i so agree!!!!^^
__________________
Sgt Dennis Heineman USMC Aviation Ordnance I.Y.A.O.Y.A.S 2001-Present 84 K10 2000 trans am ws6 2011 nissan altima 2009 Troy Built with a 42 Inch Deck My LS Swap http://67-72chevytrucks.com/vboard/s...=1#post6559371 |
01-26-2013, 05:22 PM | #24 |
Registered User
Join Date: Dec 2009
Location: Epping, NH
Posts: 605
|
Re: Lifting my 90 model k5
I had a 91 Blazer last year with a 4 inch all-spring lift and BFG 35s. Could get them to rub hitting a bump while turning (into my driveway, every day) so I clearanced it with a sawzall just a little. Had 3.08s and a 700r4 behind a tbi 350, too much tire height for those gears, but I would definitely not recommend 4.56s. Way too much imo. 3.73s would be enough to satisfy most, 4.10s are pretty much ideal. Keep in mind, your carriers won't support a drastic swap. May want to consider swapping in 3/4 axles, easy swap. Radial tires rarely measure anywhere near their stated size, so you're probably only getting a 33 anyway.
Hey Ski-me, are you sure that's only 2.5 inches of lift?! Mine had the same exact tires and yours is as tall, probably taller. I would have bet that was a six inch lift. Doesnt look like theres any bodylift there either.
__________________
1982 Chevy K30 CCLB fleetside. Formerly a cab and chassis, now a fleetside dually with the rear wheels tucked underneath. 454/th400/np205/C14/D60, 6/4 inch LIFT, not drop. |
05-20-2014, 12:47 AM | #25 |
resident oilfield trash
Join Date: Jan 2009
Location: Lubbock TX
Posts: 1,465
|
Re: Lifting my 90 model k5
I just did a google search because I'm ready to do my life and I happened on my own thread. I still can't get a good answer on what lift to run. I was decided on procomp but I've read places that it rides like crap. Any truth to this. Anyone run the 4 wheel parts lifts?
__________________
1967 SWB C10 396/400 factory air factory tach (sadly had to send to a new home) 1986 Honda 70 Fourtrax 1991 Chevrolet K5 blazer 2wd 1982 Mastercraft Pro Star 190 Stars and Stripes 2002 Chevrolet Tahoe 2011 Nissan Armada |
Bookmarks |
|
|