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onlydriveagm
04-08-2009, 10:32 PM
you can tell by the pics of my truck I don’t really have a suspension lift its mostly body lift (its just got a couple add a leafs) well I was working on my mud truck and I seen my springs are shot (I got a few cracked springs and some missing parts of leafs) I know I need to put new springs in it so I won’t cut the side of my boggers. I was just wondering if a 6 in lift it to much for a 77 blazer (will the drive shafts still work and wont have to much pinion angle or should I get a 4 in?

chevy_338
04-08-2009, 10:49 PM
the rear drive shaft will work but the front will pull out if you get air and bounce hard and it will get all messed up we had a 6 on the blazer we took to downing and we went though 2 front drive shafts there

hell on wheels
04-08-2009, 11:27 PM
it all depends on the tranny and transfer case combo. I had a 4 in lift in a chevy with a 4 speed and a 205 (shortest combo for them trucks) and i went thru a lot of front shafts. on the other hand i had a th400 208 which is (i think) the longest stock combo you can have and i ran an 8 in lift without to many problems. ( i lengthened the shaft a bit for the 8 in tho)

hell on wheels
04-08-2009, 11:27 PM
and also the rear should be fine either way as long as you keep the blocks tight if you use any.

onlydriveagm
04-08-2009, 11:32 PM
it will be running a 454 th400 and a 203

hell on wheels
04-08-2009, 11:41 PM
yes it will work fine but i would HIGHLY reccomend grinding the cv ears for more travel if your shaft wont fall completely under the youlk or you will blow the cv ball. all you do is bolt the front drive shaft on to the tranfer case ONLY all the way tightened and put the transfer case in neutral and spin the shaft the u-joint that connects to the front yolk should be able to AT LEAST stay completely underneath the youlk as you spin the driveshaft a full 360 degrees. if it doesnt you will need to grind off the safety tabs on the cv joint that keep it from hitting the ground on a stock truck when you blow a u-joint. if you look up in there as you spin it you will see what has to be ground.

89suburban
04-08-2009, 11:53 PM
i would say the same as hell on wheels its everything i would

twoblood
04-09-2009, 01:40 PM
yes it will work fine but i would HIGHLY reccomend grinding the cv ears for more travel if your shaft wont fall completely under the youlk or you will blow the cv ball. all you do is bolt the front drive shaft on to the tranfer case ONLY all the way tightened and put the transfer case in neutral and spin the shaft the u-joint that connects to the front yolk should be able to AT LEAST stay completely underneath the youlk as you spin the driveshaft a full 360 degrees. if it doesnt you will need to grind off the safety tabs on the cv joint that keep it from hitting the ground on a stock truck when you blow a u-joint. if you look up in there as you spin it you will see what has to be ground.

this is great stuff to do hell but not to bust ur chops y do u call a drive shaft a cv unless he is runing a ifs front end he don't have them we all know what ur talking about but some people might get confused that know what a Constant Velocity shaft is or maybe im not geting it?

off-trail blazer
04-09-2009, 02:20 PM
the front shat of my blazer has the cv and it is solid axle. the back is just the drive shaft, but the front has a slip shaft and a cv (on the t-case end) to allow for the steep angle.

twoblood
04-09-2009, 03:25 PM
i wanna see a pic if u can pls

michaelg
04-09-2009, 06:59 PM
It might not also hurt to shim down the tranny, t-case by an inch or two with spacer blocks at the frame cross member that supports the t-case. That will allow a couple degrees of clearance for the front shaft.

twoblood
04-10-2009, 08:58 AM
the front shat of my blazer has the cv and it is solid axle. the back is just the drive shaft, but the front has a slip shaft and a cv (on the t-case end) to allow for the steep angle.

unless u put one in i don't think u have one.

off-trail blazer
04-10-2009, 09:31 AM
both of my blazers have the same thing. one is an 89 and the other is an 85. i didnt change anything.... here is what i am talking about...

http://www.arizonadrivelines.com/images/saginaw%20standard.jpg

twoblood
04-10-2009, 09:46 AM
aw ok thats a cv joint when i see cv shaft im thinking of the ifs and the allwheel half shafts im retarted sorry

off-trail blazer
04-10-2009, 09:50 AM
no problem. i was looking a little more and i see it is actually called an h-yoke(rockauto.com), but i have always hear it called a cv. i could see people getting confused though.

twoblood
04-10-2009, 09:53 AM
that is what i was thinking he was talking about but i really was not shure

twoblood
04-10-2009, 09:59 AM
http://www.northwestoffroad.com/images/parts/157A03drvshft_w_txt.jpg
there thats better