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Old 08-31-2006, 11:42 PM
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newby question - back half

What exactly is a back halved car? I see the term a lot, but I've never found a definition. The closest I came was a net search that said 'rear suspension replaced by ladder bars' -- but that was in a carfax description of a car that somebody wanted to buy.

Anyway, I thought that it must be similar to that, but I'm hoping that somebody has little more info. For example, does it refer to any rear suspension replacement, is it related to drag racing class rules, etc.

Thanks!

ford2go

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Old 09-01-2006, 12:20 AM
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Here's an example, your building a drag car with 1000 HP out of vehicle that was made to drive on the street. The entire rear section of the vehicle needs to be modded to handle that power and get it to the ground. So, you narrow the frame, rearend, tube the fender wells, install some WIDE tires, etc. Dragster are both front-halved and back-halved. Cheers...
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Old 09-05-2006, 10:52 AM
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There's tons of info on the web about what a backhalf job is. S&W racecars has some pics that show the frame work that takes the place of the factory rails for ladder bars or a 4 link system. http://www.swracecars.com/rearframes.asp
On some cars, you can install ladder bars without replacing the back end of the car but a 4 link setup usually needs more room. Just about all the floor from the transmission cross member on back will be cut out, new frame rails installed with new flooring and suspension.
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Old 09-05-2006, 11:06 AM
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back halved can mean a number of things, all quite similar in their intentions

it can be as simple as someone having modified the floor for suspension clearance

sometimes it referes to having notched the stock frame & minitubing the rear

sometimes it means that they purchased one of the $1000+ rear frame & suspension kits from jegs / summit, cut the old frame off, welded the new one in, and made a new rear floor

in all cases its for the same reason .... getting a race ready rear suspension in the car for teh sake of getting gobs of traction
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Old 09-06-2006, 10:38 AM
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Quote:
Originally Posted by lowROLLERchevy
back halved can mean a number of things, all quite similar in their intentions

it can be as simple as someone having modified the floor for suspension clearance

sometimes it referes to having notched the stock frame & minitubing the rear

sometimes it means that they purchased one of the $1000+ rear frame & suspension kits from jegs / summit, cut the old frame off, welded the new one in, and made a new rear floor

in all cases its for the same reason .... getting a race ready rear suspension in the car for teh sake of getting gobs of traction
The shops that I've been around do not call mini tubs a back half. Mini tubs is just that, mini tubs. Now you can get your car mini tubbed with or without notching the frame. Just depends on how much room you want but if you want more room, you ask for the job to be done that way. Having the floor sheet metal 'modified' to accept ladder bars is also not a back half. It's a floor modification for bar clearance. It can be simple slots cut and then covered with aluminum or steel. Recently had that done on a 72 Dodge Challenger. Most shops that I've talked to consider a back half job to be removing all of the floor and factory frame (unibody cars) from the trans cross member on back and installing race type frame and flooring that will accept 4-links systems or ladder bars. Backhalf cars also are usually full caged.
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Old 09-06-2006, 10:54 AM
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Another example...

Here's my 2003 Mercury Marauder in the process of being back-halved. It is on a frame machine so all the body mounts would be the same when we were finished sectioning the frame above the rear axle.



and here it is with the body back on the frame. Everything was perfect!



Cheers!

john
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Old 09-07-2006, 01:16 PM
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John.

Your Marauder is looking insane! I never knew they had a full frame either, pretty cool. I was wondering how your project was going, looks like your making good progess. I missed some of your update posts. Keep it comming.
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Old 09-08-2006, 09:28 AM
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Ya, that's cool looking! And yes, all the big Ford products have full frames.
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