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Using superduty springs and keeping stock height, needing front shocks. Passenger measurement is 20.5", driver is 21.5".
Should I use two of the same shocks for the 21.5" measurement or do I need to find two different for the two measurements? Which brand have you guys used. Thinking a basic monroe.
BTW, I flip flopped the shock towers so that the 'LH' towers is on the passenger side, the 'RH' is on the driver side, the stud mount angle seems to be more appropriate.
Driver side measurement Passenger side measurement
Last edited by stpackard; Jun 6, 2022 at 11:44 PM.
Reason: added measurement pictures
Personaly I wouldnt run over the counter shocks. Id call Foa see what they recomend for valving. Shoot for a length that gives you 4-5" up travel and about the same down travel.
Ill likly run 12" stroke shocks on my 76 f150 and set shockd brackets to give 5" up travel and the rest down. Ill fab upper and lowet mounts
Its alittle tuffer getting the correct length when working with stock brackets.
Foa will have a valving set up for leaf springs tire size and your expections from the truck daily driver drag truck offroad or a mix of all.
Foa shocks will run 150- 250 for 2.5 shock depending on what yo go with resivors or not
Can also do the same with King and fox shocks but youl be 300 ish in a shock. But theyl be 100% set up for your ride . Accutune, filthy Motorsports and many others are sending out King and fox shocks with custom valving.
Foa is the budget fully valveable rebuildable shocks.
Lots of options ounce we get away from the over the counter McDonalds world
Keep both same. As long as you aren't doing any serious wheeling the Monroe Gas Magnum is a decent option for normal use "especially" considering the super duty springs are probably less stiff than the original highboy springs.
So you maintained the stock ride height? Is that measurement with truck sitting at normal height? Seems a little long as the stock shock lists 22" overall length at full extension https://www.rockauto.com/en/moreinfo...=1045&jsn=1045
Appreciate the recommendation Evan76, was wanting to find something locally but will consider foa if in a bind.
Originally Posted by Evan76
Personaly I wouldnt run over the counter shocks. Id call Foa see what they recomend for valving. Shoot for a length that gives you 4-5" up travel and about the same down travel.
Thanks fe390pc - good idea to keep them the same. Thought different lengths might make it respond unequal.
Originally Posted by fe390pc
I would go with 21" and keep the shocks the same.
Appreciate the tip Mark8man, sounds like keeping them the same is the thing. Difference comes mostly from the towers and axle mounts being completely different areas and setups.
Yes, wanted the stock ride height. The SD springs are a softer ride and have sagged a bit with the 4bt. I ended up using some '99 SD springs that have a different leaf wrap than the later years, so will probably swap them out for some higher weight rating springs, the 2600 pound (x code). Bought KYB the first time around and one was constantly fully extended past the line on the tube. This is why going off the stock listings might not work. I'll check out the rock auto listing.
Originally Posted by Mark8man
Keep both same. As long as you aren't doing any serious wheeling the Monroe Gas Magnum is a decent option for normal use "especially" considering the super duty springs are probably less stiff than the original highboy springs.
So you maintained the stock ride height? Is that measurement with truck sitting at normal height? Seems a little long as the stock shock lists 22" overall length at full extension https://www.rockauto.com/en/moreinfo...=1045&jsn=1045
Here in town there's a parts counter that has some smart guys who know how to specifify the right parts, so would I just say I need a set of Monroe shocks for 3/4 ton ford front + and - 3" for a 21" measurement?
Appreciate the recommendation Evan76, was wanting to find something locally but will consider foa if in a bind.
Here in town there's a parts counter that has some smart guys who know how to specifify the right parts, so would I just say I need a set of Monroe shocks for 3/4 ton ford front + and - 3" for a 21" measurement?
Yea as long as they have the right resources available. If they are looking at Monroe brand make sure its the gas magnum as they have a standard line as well. If you have a 4X4 Off Road shop in town that might be a good source as well and may offer more options.
But first make sure 3" over is going to be enough. Don't guess. With your base measurement of say 22" (with suspension at rest) and no shock installed, raise frame with a jack just until the tire comes off floor and re-measure the length in same way you measured the base or static length. That will confirm the extended length you need. Confirm the compressed length as well because they should ask for both extended and compressed lengths (distance from rubber bump stop to axle or pad where it will hit)
If you replace the shock towers with some off a OBS or SD, they both should bolt on, it'll give you an eye mount up top instead of a stud and it'll open up the shock options and they aren't really expensive. A SD shock might even be close. Getting something off the shelf that's valved correctly for those springs and the trucks weight, plus has the correct extended/collapsed heights is gonna be tricky.
Thanks for the suggestions. Was playing with the idea of converting to islets and maybe different axle mounts but am just coming off 3 months of finishing diesel swap and am ready to NOT work on the truck. For a future project the OBS and SD towers recommendation sounds great for conversion to islets.
Want to get the project rolling so am settling with rancho rs55014, which are 14-3/4” to 24-7/8” on 0-4” lift. These came up for 67-77 f250 4x4 fronts on rancho website. Saw a member with a ‘77 runs them.
Have them on the fast train from summit so will report back if there is or isn’t a success..
Sam
Thanks for the suggestions. Was playing with the idea of converting to islets and maybe different axle mounts but am just coming off 3 months of finishing diesel swap and am ready to NOT work on the truck. For a future project the OBS and SD towers recommendation sounds great for conversion to islets.
Want to get the project rolling so am settling with rancho rs55014, which are 14-3/4” to 24-7/8” on 0-4” lift. These came up for 67-77 f250 4x4 fronts on rancho website. Saw a member with a ‘77 runs them.
Have them on the fast train from summit so will report back if there is or isn’t a success..
Sam
I don't think those are gonna work. If you have 21" installed height those shocks are only giving you 3 7/8" of down travel before they're fully extended. That's just a big pothole or bump away from overextending and blowing it out. I think something with about 6" of extension, or a 27-29" extended length shock would be a good safety margin. I can get my truck to move down 1" fairly easily just by pushing on the bumper with the stock springs and those SD springs add alot more movement over the stock stuff. Or you could put a limiting strap on the axle so it doesn't overextend the shock, but that's really not the right way to deal with it.
You really need to flex and compress the suspension to get the compressed, extended and installed heights and buy a shock based on those numbers.
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. For a future project the OBS and SD towers recommendation sounds great for conversion to islets.
