as title says, i have a 91 f350 8ft bed, crew 2wd SRW. not sure if 3/4 or 1 ton (how do i check?)
I have heard of a shackle flip to raise the rear. Im looking to raise it approx 3-4 inches. What exactly does a shackle flip entail? I have a welder, metal, and lots of time and patience.
Im very new to the truck world, please be patient with me

 

Firstly, if you have an F350, then it should be a one ton. The rear axle should also be a full floating type, which means the axle ends stick out past the rims center about 4 or 5 inches.
I think, the front suspension would NOT be the TTB on a 2wd one ton as well?

As for raising the rear, is it for looks or other reasons? You could put a lift block in, which I think would be a lot easier than a shackle flip. But seems to me that it would negatively affect the handling of the truck. Either way, you would also have to change out the shocks to match the additional hight.
I don't think I would raise it more than 2 inches myself...

 

A TTB is a four-wheel drive front axle so your question does not make a lot of sense. A 2wd F-350 uses a twin I-beam suspension. Is that what you're talking about?

An F-350 is a one-ton truck. An F-250 is a 3/4 ton truck. Always.

Are you planning on lifting the front of the truck as well? Your truck will look really silly with the rear jacked up 4" and the front at stock height. Your headlights will point at the ground in front of you. Why do you want this? Are you trying to get more load capacity?

 

Yep, twin I beam is what I meant. Wasn't sure if the 2wd F350 had the twin I beam or a solid beam like the heavier duty trucks.

 

sorry fo the confusion guys, im all new to this and not familiar with the terminology yet.
those parts store guys, i tell em its a 350 and they ask if its 3/4 or 1 ton, i always said 1 ton (i assumed it was since its a 350 and a friggin diesel).

here is why i want to raise the rear


as you can see, the rear sits lower than the front (previous owner put some huge *** springs up front, and the camber bushings are maxed yet i still have massive positive camber)
Also, i wouldnt mind a slightly raked look (nothing crazy though).
I want the rear to be AT LEAST level with the front, if not 1-2" higher.

my friend said i had TTB (dont even know what it stands for), but this truck does in fact have twin I beams (i think)


its a bad angle for this, but it seems the springs are almost or only 0.5" from the rear axle, so i could put a 2" block under there (im not a fan of blocks though).


thanks for the input so far guys, keep it coming please

 

Parts store guys are pretty clueless in general. That doesn't surprise me.

Your friend is also wrong, a TTB (twin traction beam) is the four-wheel drive version of Ford's twin I-beam front suspension.

For your problem, I would get a couple of lift springs from an offroad/4x4 shop near you and put them in. You will also need longer shocks. That will get everything looking right again. Your other option is to put a set of stock front coils back in. That will also correct your alignment problems.

 

^ i like the front raised that high is the problem lol.
is there some agressive bushings i can buy that have 4-5 degrees if camber adjustability?

i want to convert to 4wd, but that wont be for another year

lift springs cost money, how does one go about foing a shackle flip?

 

I know that for a 4x4 there are lots of different aftermarket camber bushings but I honestly don't know what's available for 2wd trucks. They might be the same or they might not - I'm not sure.

Buy the shackle flip kit and install it. Sky makes on and it raises the back of the truck about 4.5" according to their website.

Ford Rear Shackle Flip Kit - Sky's Off-road Design

 

I am not overly familiar with 2wds but IIRC 2wds dont use rear blocks, so you could very easily put a set of F250 2.5" block in or get a set of F350 4" blocks and a new set of U bolts

 

So im assuming the 4wd f350s had 4" blocks stOck?
Do they come with a beveled angled to account for pinion angle?

Those shackle kits are 170, and they mention they need some kind of block to correct the pinion angle as well..

 

you can do a shackle flip without a kit. take the rear of the spring loose from the bracket attached to the frame, remove the bracket from the frame, install it on the other side but turned upside down. gives about 4" lift

 

^ i knew there was some cheap way to do it, thanks! Stock brackets are bolted on? Ill do some searching, im sire theyres a write up on how to do it somewhere, thanks

 

stock brackets are rivited on, grind off heads knock out with air hammer or sledge and punch. do the flip, may have to drill a couple holes and bolt back on with 7/16 grade 8bolts

 

thank you very much fdude!

 

The rear axle should also be a full floating type