? for those converting to 2wd? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

03glide · 01-18-2005, 08:53 AM

Has anyone completed this conversion? Is the rear conversion accomplished by simply installing lowering blocks? I was going to look for a 2wd frame but I already have a crossmember from a 2wd truck and a rear to still the 5 lug axles. I haven't measured, but does anyone know if the axles from a 5 lug truck rear will interchange in the 4X4 Blazer rear?
Thanks, Brian

6772king · 01-18-2005, 05:36 PM

g m made many different axel widths,,,, 9 times out of ten I have found that the 5 bolts are the same a the 4x4 6 lug and you cant insall lowering blocks in the rear cause the axel sits on top.. you would have to move the axel onto the top of the leave springs first and this would lower the rear about4-5 inches,,, hope this helps

6772king · 01-18-2005, 05:39 PM

what I ment by the rear blocks is the leave springs sit on top of the rear end ,,,so if you put blocks in it would lift it ,,I said it wrong before but i was right about flipping the rear end to the top of the leaf springs...

**uncle** · 01-18-2005, 09:48 PM

You can swap axles if the rearend is 70 and up.

CHEVYE · 01-18-2005, 10:43 PM

i`ll see if i can get a pic of mine on here tomorrow. it has a ladder bar set up for suspension though. i don`t know why it has ladder bars and leafs

damn previous owners. but it is really good and stiff with not alot of bounce.

03glide · 01-19-2005, 09:33 AM

Thanks for the info. I guess that means I would have to weld some spring perches to bottom of the rear end.

CHEVYE · 01-20-2005, 05:48 PM

haven`t forgot pics, school started back this week. i`m out the door before the sun and back home way after it`s gone.

Livrat · 01-21-2005, 10:25 PM

I have done several of those conversions... the most common being using a 71 - 80 5 lug rear end and welding on the spring perches... and mounting on top of the stock springs... It would also depend on what ride height you want.. if you switch the spring hangars from a leaf sprung 67 - 72 2WD truck you will loose about 4 more inches in ride height...
Yes any 71 - 80 ...12 bolt 2WD axles should bolt directly into your 4X4 housing..
Attached is a picture of one conversion... using the stock Blazer spring perches with a 2WD axle on top of the leaf springs.. and 1 1/2 coils cut from the fronts springs....

CHEVYE · 01-23-2005, 01:06 PM

here ya go.

01-18-2005, 08:53 AM	#1
03glide Sell it before it's finished Join Date: Dec 2003 Location: Wilmington, NC Posts: 630	? for those converting to 2wd? Has anyone completed this conversion? Is the rear conversion accomplished by simply installing lowering blocks? I was going to look for a 2wd frame but I already have a crossmember from a 2wd truck and a rear to still the 5 lug axles. I haven't measured, but does anyone know if the axles from a 5 lug truck rear will interchange in the 4X4 Blazer rear? Thanks, Brian

01-18-2005, 05:36 PM	#2
6772king Registered User Join Date: Feb 2002 Location: grove city pa usa Posts: 628	g m made many different axel widths,,,, 9 times out of ten I have found that the 5 bolts are the same a the 4x4 6 lug and you cant insall lowering blocks in the rear cause the axel sits on top.. you would have to move the axel onto the top of the leave springs first and this would lower the rear about4-5 inches,,, hope this helps __________________ 67 chevy short step 2wd 427 71 chevy short fleet 4x4 396 72 gmc jimmy 2wd 377 71 chevy blazer 4x4 454 69 chevy longhorn 5.9l cummins 72 chevy 400 2wd custom camper 67 chevy lwb 4x4 454-in pieces 67 chevy panel soon 4x4-400 67 gmc dump 4x4 1 ton-305 WTF!! 72 chevy 3/4 ton 4x4 burb 350 70 chevy panel 2wd 302 5 speed tko "THERE IS NO REPLACMENT FOR DISPLACMENT"!!!!!!!

01-18-2005, 05:39 PM	#3
6772king Registered User Join Date: Feb 2002 Location: grove city pa usa Posts: 628	what I ment by the rear blocks is the leave springs sit on top of the rear end ,,,so if you put blocks in it would lift it ,,I said it wrong before but i was right about flipping the rear end to the top of the leaf springs... __________________ 67 chevy short step 2wd 427 71 chevy short fleet 4x4 396 72 gmc jimmy 2wd 377 71 chevy blazer 4x4 454 69 chevy longhorn 5.9l cummins 72 chevy 400 2wd custom camper 67 chevy lwb 4x4 454-in pieces 67 chevy panel soon 4x4-400 67 gmc dump 4x4 1 ton-305 WTF!! 72 chevy 3/4 ton 4x4 burb 350 70 chevy panel 2wd 302 5 speed tko "THERE IS NO REPLACMENT FOR DISPLACMENT"!!!!!!!

01-18-2005, 09:48 PM	#4
uncle Senior Member Join Date: Aug 2003 Location: Conyers,Ga. Posts: 7,288	Rear You can swap axles if the rearend is 70 and up.

01-18-2005, 10:43 PM	#5
CHEVYE my gas saver Join Date: Sep 2003 Location: Clarksville, TN Posts: 2,046	i`ll see if i can get a pic of mine on here tomorrow. it has a ladder bar set up for suspension though. i don`t know why it has ladder bars and leafs damn previous owners. but it is really good and stiff with not alot of bounce. __________________ 85' SWB, 4.3/TH350, getting ready for paint 84`SWB, 462ci./TH400, cowl hood, 15" billet spec., flows, blazer buckets/console, flat black 71`SWB, project ebay feedback

01-19-2005, 09:33 AM	#6
03glide Sell it before it's finished Join Date: Dec 2003 Location: Wilmington, NC Posts: 630	Thanks for the info. I guess that means I would have to weld some spring perches to bottom of the rear end.

01-20-2005, 05:48 PM	#7
CHEVYE my gas saver Join Date: Sep 2003 Location: Clarksville, TN Posts: 2,046	haven`t forgot pics, school started back this week. i`m out the door before the sun and back home way after it`s gone. __________________ 85' SWB, 4.3/TH350, getting ready for paint 84`SWB, 462ci./TH400, cowl hood, 15" billet spec., flows, blazer buckets/console, flat black 71`SWB, project ebay feedback

01-21-2005, 10:25 PM	#8
Livrat Member #1049 Join Date: Jun 2000 Location: Troy Montana Posts: 3,940	I have done several of those conversions... the most common being using a 71 - 80 5 lug rear end and welding on the spring perches... and mounting on top of the stock springs... It would also depend on what ride height you want.. if you switch the spring hangars from a leaf sprung 67 - 72 2WD truck you will loose about 4 more inches in ride height... Yes any 71 - 80 ...12 bolt 2WD axles should bolt directly into your 4X4 housing.. Attached is a picture of one conversion... using the stock Blazer spring perches with a 2WD axle on top of the leaf springs.. and 1 1/2 coils cut from the fronts springs.... Attached Images

01-23-2005, 01:06 PM	#9
CHEVYE my gas saver Join Date: Sep 2003 Location: Clarksville, TN Posts: 2,046	here ya go. Attached Images __________________ 85' SWB, 4.3/TH350, getting ready for paint 84`SWB, 462ci./TH400, cowl hood, 15" billet spec., flows, blazer buckets/console, flat black 71`SWB, project ebay feedback Last edited by CHEVYE; 01-23-2005 at 01:08 PM.

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