rear end weight...

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Jun 29, 2010 | 09:55 PM

freakboy

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rear end weight...

Hey guys... anyone have any idea on how much the rear end weighs on a 78 f150 with a inline six? i need to know aproximatly how much the rear weighs so i can order some coil overs for the rear... any help is apreciated... i cant weigh mine cause its just a frame and wheels and motor in my garage right now...

Jul 1, 2010 | 12:17 AM

freakboy

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No one can help?

Jul 1, 2010 | 12:32 AM

Ace.

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From: Spokane, WA

the whole rear? as in bed, axle, wheels/tires, bumper, shocks,and frame? or just the 9'' rear axle?

Jul 1, 2010 | 12:35 AM

mikeo0o0o0

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From: Stanley, VA

You might take your curb weight if you know it and multiply by .4 This should get you close. For what you're doing you don't want to figure in the weight of the rear axle. Rear axle is unsprung weight.

Jul 1, 2010 | 12:40 AM

freakboy

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I need all of it.. basicaly how much the rear end would be weighing if it were on oval track scales...
and thank you so much Mike! I have been trying to figure this out for a while.. just another quick question how did you come up with that equation?

Jul 1, 2010 | 04:04 AM

ATC Crazy

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From: SW VA

Go to a truck stop and get on the Cat scales. They will give you individual axle weights.

Jul 1, 2010 | 07:39 AM

freakboy

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Quote:

Originally Posted by ATC Crazy

Go to a truck stop and get on the Cat scales. They will give you individual axle weights.

I would do that but i kinda cant... ummm lets just say the only thing on the frame is the motor....

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Jul 1, 2010 | 09:04 AM

mikeo0o0o0

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From: Stanley, VA

Quote:

Originally Posted by freakboy

This is just my "seat of the pants" equation. Like I said, it should get you close.
If you really want to split hairs, the weight bias on the rear axle is greater on a short bed than a long bed.
On a pickup most of the weight is located over the front axle. As you move the rear axle further away from the front axle, the center of gravity moves aft also, but not the same amount as you move the axle because the bulk of the weight (engine, cab, tranny, etc.) doesn't move rearward....oops, here I am going off on a tangent again, sorry.
Simple answer to your question, my equation is a "gut feeling".