HELP!! Is it worth swapping '72 front suspension for '80?? - Page 2 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Deuce · 01-01-2005, 03:02 PM

Quote:

Originally Posted by gunnersm8

ok im bringing this back up, as i just read some other post about using 3/4 ton upper? i better get my **** in one sock here...
if i get the whole front end, it will go on, for the most part, a couple of holes drilled/oblonged at most right? is that using the 69 x member or the late model? anything special needed?

A cross member from a 73-87 will fit in a 69. You might have to drill a couple holes. Does this answer your question??

moodybo · 01-02-2005, 02:21 AM

So some one give me a check list for what i would need!please? putting 73-87 rotors in a 72 setup.

Here is another one for yall! What about using the larger 1 1/4" rotors and calpers compaired to the 1"? worth it? I have a pair from a 73 van.

Tx Firefighter · 01-02-2005, 09:02 AM

The thick 73-87 rotors are a direct swap onto 72 spindles, no mods needed.

Deuce · 01-02-2005, 01:16 PM

To put 73+up spindles on a 72 front suspension do you need to change 1 or both ball joints(upper and lower) to the 73+ size??

Tx Firefighter · 01-02-2005, 04:11 PM

Lower ball joint fits 71-87
Upper Ball joint for 71-72 is different than 73 and newer one.

If you go to Moog's website, you can look all of this up and it gives the part numbers for you as well as the years that it fits.

Tx Firefighter · 01-02-2005, 04:14 PM

Click HERE for the site I'm talking about.

Just enter year, truck, engines size and all of that. Then select steering and suspension. It will list all of the Moog part numbers for your trucks suspension parts. It shows what range of years those parts fit too.

Using that, you can determine exactly what will interchange as far a ball joints, tie rod ends and such when swapping components from different years.

crazy longhorn · 01-02-2005, 09:42 PM

the outer tierod ends also need to be swapped, if you use a 73-up spindle, on the 71-72 trucks.

crazyL

moodybo · 01-02-2005, 10:52 PM

Is the I.D. of the 71-72 upper ball joint hole the same as the 73-87 upper ball joint hole? I am also wanting to transplant the 73-87 spindles into my 72. i forgot to mention that in my last post. thats what i wanted my check list for. I want them for #1 price for drop spindles are way lower, #2 more common parts. I guess those are usual reasons!right?

Tx Firefighter · 01-02-2005, 10:55 PM

Yes, the newer style upper ball joints bolt right in place

moodybo · 01-02-2005, 11:01 PM

Nobody has really said if the heavier duty rotors are overkill or not? ! 1 1/4" vs. 1". What do you think tx firefighter?

Tx Firefighter · 01-02-2005, 11:05 PM

My 77 Blazer has the thicker ones.

My 83 stepside had the thinner ones.

Neither gave me any trouble at all.

Personally, when starting from scratch, I'll use the thicker ones. More mass dissipates heat better without as much risk of warping or getting hot spots.

Logic tells me to use the biggest brakes that I can.

moodybo · 01-02-2005, 11:16 PM

"bigger brakes is better" That is the usual way! yes i know that more disc space disapates heat faster. Is the bigger calipers a problem in any way! tire clearance for instance. Is there a market for slotted or drilled 1 1/4 rotors?

01-02-2005, 09:02 AM	#28
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	The thick 73-87 rotors are a direct swap onto 72 spindles, no mods needed. __________________ I'm on the Instagram- @Gearhead_Kevin

01-02-2005, 01:16 PM	#29
Deuce Registered User Join Date: Apr 2004 Location: Calgary, Alberta,Canada Posts: 1,595	To put 73+up spindles on a 72 front suspension do you need to change 1 or both ball joints(upper and lower) to the 73+ size?? __________________ I know what your thinking.......I have ESPN. Sometimes it's easier to do things the hard way. Fesler Built 1968 Chevy C10....Must resist the urge to mess with it!!

01-02-2005, 04:11 PM	#30
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	Lower ball joint fits 71-87 Upper Ball joint for 71-72 is different than 73 and newer one. If you go to Moog's website, you can look all of this up and it gives the part numbers for you as well as the years that it fits. __________________ I'm on the Instagram- @Gearhead_Kevin

01-02-2005, 04:14 PM	#31
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	Click HERE for the site I'm talking about. Just enter year, truck, engines size and all of that. Then select steering and suspension. It will list all of the Moog part numbers for your trucks suspension parts. It shows what range of years those parts fit too. Using that, you can determine exactly what will interchange as far a ball joints, tie rod ends and such when swapping components from different years. __________________ I'm on the Instagram- @Gearhead_Kevin

01-02-2005, 09:42 PM	#32
crazy longhorn Fabricate till you "puke" Join Date: Jun 2002 Location: Ill Posts: 9,402	the outer tierod ends also need to be swapped, if you use a 73-up spindle, on the 71-72 trucks. crazyL __________________ 69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears....

01-02-2005, 02:21 AM	#27
moodybo Registered User Join Date: Oct 2004 Location: Oklahoma Posts: 261	So some one give me a check list for what i would need!please? putting 73-87 rotors in a 72 setup. Here is another one for yall! What about using the larger 1 1/4" rotors and calpers compaired to the 1"? worth it? I have a pair from a 73 van.

01-02-2005, 10:52 PM	#33
moodybo Registered User Join Date: Oct 2004 Location: Oklahoma Posts: 261	Is the I.D. of the 71-72 upper ball joint hole the same as the 73-87 upper ball joint hole? I am also wanting to transplant the 73-87 spindles into my 72. i forgot to mention that in my last post. thats what i wanted my check list for. I want them for #1 price for drop spindles are way lower, #2 more common parts. I guess those are usual reasons!right?

01-02-2005, 10:55 PM	#34
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	Yes, the newer style upper ball joints bolt right in place __________________ I'm on the Instagram- @Gearhead_Kevin

01-02-2005, 11:01 PM	#35
moodybo Registered User Join Date: Oct 2004 Location: Oklahoma Posts: 261	Nobody has really said if the heavier duty rotors are overkill or not? ! 1 1/4" vs. 1". What do you think tx firefighter?

01-02-2005, 11:05 PM	#36
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	My 77 Blazer has the thicker ones. My 83 stepside had the thinner ones. Neither gave me any trouble at all. Personally, when starting from scratch, I'll use the thicker ones. More mass dissipates heat better without as much risk of warping or getting hot spots. Logic tells me to use the biggest brakes that I can. __________________ I'm on the Instagram- @Gearhead_Kevin

01-02-2005, 11:16 PM	#37
moodybo Registered User Join Date: Oct 2004 Location: Oklahoma Posts: 261	"bigger brakes is better" That is the usual way! yes i know that more disc space disapates heat faster. Is the bigger calipers a problem in any way! tire clearance for instance. Is there a market for slotted or drilled 1 1/4 rotors?



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