2nd gen leaf springs

I picked up another set of front leafsprings today from a van that has 6 lugs. Is there any difference between the leafsprings on a 5lug van vs a 6lug van?

not a mechanic here, but my guess is 6 lug is 3/4 ton and 5 lug 1/2 ton

Moe I would think there HD(er) I know the back ones on my G-20 a got extra leaf.

These still have only 2 leafs. They definatly seem to have a good arch to them of course there's no weight on them. The ones on my van now look almost completly flat. Just hoping these dont raise the front end of the van higher than the rear. Still need to find new bushings before I can put them in though.

When I got my springs they were cut off the donor van with a torch at the perches and across the shackles. I reefed on the spring bolts and couldn't get them to budge so thought I'd try the old candle wax trick...always heard about it but never tried it before. I was amazed, after heating up the nut with a propane torch and melting wax on the threads these bolts came off like they were put on yesterday. I think I need to make room in my toolbox for a candle now.
okay so another question...can I assume that the bushings for the top of the shackles(through the frame) are the same ones used for the springs?

Mo,I got mine (2nd gen) re-arched & a leaf added some time back.All bushings were same size,front/rear & shackles.Only thing I had to do was shave off the steel sleeve bolt ran through at the perches,too tight.Wasn't anything a coarse flat bastard couldn't take care of though.

Got out to the garage today and got one of the rear shackles done. Using the hb930 bushings, on the top of the shackle the bushings fit great but the bushings are pretty loose in the spring eye,actually pretty sloppy. Is this normal or should they be nice and snug or tighten up when bolt is tightened? Something just doesn't seem right here???

Mo did you use the bushing for the G-10 or G-20?? The new ones I got for my G-20 were kind of tight?? Can't remember if the G-10 & G-20 use the same bushings??

Well somethings screwed up...wonder if this is a first gen axle in my '67??? The leafspring pads on the axle are 2" wide. One leaf is centered and the other one not. One of the u-bolts are angled to fit on the passenger side. The rear shackle on the driver side is jacked. What do you guys thing? Is this a 1st gen axle?

Found some numbers on the rearend casing...
3833443N
GM12
H215
And one on the top of the passenger side axle tube...
HI927W

Anyone know how to read these codes?

I think ya possibly got a 1st gen axle there. Its showing up in some other forums as for 64-65 chevy11/chevelle, if its aposi 65 fullsize vehichle. what that includes I have no idea.

Dropped the rearend and everything measures the same as the pic... 58 1/2" from outer flanges and holes are 47" apart. Here's a pic of the driver side spring pad.

Yea it wasn't lined up. When I measure the front perches on the frame for the springs I come up with 47 3/4" at center and same for the rear shackles... shouldn't the axle spring perch holes be the same 47 3/4" apart? It seems like if I were to put the spring bolt in that hole, my shackle would be leaning even more.

On my 66 someone had put in what I'm calling a 2nd gen axle setup. The perches on the axle are 2-1/2" wide compared to the 1st gen 2". The U-bolts leaned out opposite of what Mo's are because the springs are 2" wide.I think we have went thru this before and figured the axles are dimensionally the same but there may be some differences in the location of the shock mounts and of course the width of the perches.Other than the doors somewhat Im seeing less and less of anything that is entirely interchangable between a 1st and 2nd.

measured from where I think your talking about and came up with 51 3/4" also measured the spring pins with the springs hanging and got 47 3/4". When I changed out bushings in the driver side rear shackle the leaf was about 1 1/2" away from lining up... had to use a clamp just to get the nuts back on the shackle so that 3/4" in the middle makes sense to me why I had 1 1/2" off way in the back. Thinking I'm going to have to modify these spring perched if I want to use this axle.

Welded some plates to the perches and redrilled holes for the springs and all went back together well. Had to have a spring shop make me some new U bolts. Looked like a homemade gasket on the diff cover so thought I'd investigate a little. Whoever made this gasket didn't cut out the oiling holes on each side I've never dealt with the guts of a rearend before but the carrier bearings have play up and down and the carrier slides back and forth quite a bit so thinking that can't be good. Oil was all gray/silvery and smelled like $hit. Says 379062 11:37 GM 9 65 2 on the ring gear so I have a 1965 3.36 rear. Might be looking for a diffent rear end after all.