drop question

[79 blue monster]

how much drop do i get from a rear axle flip while keeping my stock leafs? i want to keep it a 3/4 ton leaf pack but get a 6in drop in the back. do i need to buy drop shackles? also wut is the angle that my drive shaft needs to be to weld my axle plates(perches) on?

[oldschool18]

i would flip the axel and see what drop you get with the 3/4 leafs i think theres more leafs so i'm guessing at least 4" and just try to keep the drive shaft straight

[76Charlie]

Rock on, I started when I was 15, 3 years ago. You'll be surprised how much you'll learn from these cool trucks. Try some drop spindles

[79 blue monster]

Originally Posted by oldschool18

i would flip the axel and see what drop you get with the 3/4 leafs i think theres more leafs so i'm guessing at least 4" and just try to keep the drive shaft straight

when you say keep the driveshaft sright, what do you mean? i cant have it perfectly inline with the axle, because it will vibrate.

[79 blue monster]

Originally Posted by 76Charlie

Rock on, I started when I was 15, 3 years ago. You'll be surprised how much you'll learn from these cool trucks. Try some drop spindles

yeah haha i love these trucks, i always wanted a 67-72 body style, but now that i have a square, i know i made the right choice.

[J Knight]

If you want to know exactly how much drop you get from an axle flip without removing any leafs you need to measure from the bottom of the axle tube to the top of the leaf spring then add 1/2 to 3/4 in to the measurement for the flip bracket. This will give you your exact drop, also measure the distance from the top of the spring to the bottom of the frame rail, then measure the axle tube diameter, add 1/2 to 3/4 in for the bracket, deduct this measurement from the spring to frame measurement and this will give you your suspension travel room. If you have less than 2in I would recommend a c-notch.
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[SCOTI]

On a 3/4 ton, flipping the rear would get around 7" of drop.

[oldschool18]

my c-10 was bagged and the driveshaft was pretty straight and never vibrated

[JCampbell]

I got 8" out of the flip on my 1-ton.

[79 blue monster]

Originally Posted by oldschool18

my c-10 was bagged and the driveshaft was pretty straight and never vibrated

oh, so it wont matter what angle my drive shaft is

[SCOTI]

Originally Posted by 79 blue monster

oh, so it wont matter what angle my drive shaft is

It definitely can/does matter. One might have an issue; another may not.

[Square_78]

I had 3/4 ton springs in the back of mine and my back end came down 8.5" with a flip kit. I did remove a couple leafs though. I now have 4 plus the overload. My driveshaft was making al sorts of terrible banging noises after I dropped it. Had to install 4 degree shims but I should have used more. Still vibrates at low speed.

[79 blue monster]

well i dont really know now lol, so far i have answers of 7in, 8in, or 8.5in? i guess i'll have to measure and get a reading.

[SCOTI]

Originally Posted by 79 blue monster

well i dont really know now lol, so far i have answers of 7in, 8in, or 8.5in? i guess i'll have to measure and get a reading.

Exactly, you need to measure to get an accurate answer. Add 1/2 the diameter of the axle tube to the height of the spring pack & you'll be very close to the amount of drop.

[79 blue monster]

Originally Posted by SCOTI

Exactly, you need to measure to get an accurate answer. Add 1/2 the diameter of the axle tube to the height of the spring pack & you'll be very close to the amount of drop.

just did and its gonna be 7in of drop. do i need to go 5in of drop in the front then for it to sit level?

[SCOTI]

Originally Posted by 79 blue monster

just did and its gonna be 7in of drop. do i need to go 5in of drop in the front then for it to sit level?

What's the difference in the F to R height now?

[79 blue monster]

Originally Posted by SCOTI

What's the difference in the F to R height now?

I didnt measure yet, but i'll update tommarow with measurements.