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Old April 1st, 2013, 04:21 PM   #1
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Default 2WD vs AWD for the street

This is a spin-off from a different hot rod thread.

What do you guys think, all other factors being the same, do you think you can get a RWD vehicle to hook up on the street like an AWD vehicle?

Suspension can be anything -leaves with caltracs, 4 link, ladder bars, etc.

AWD, I assume some 255 or 275 regular street tires
RWD, I assume some kind of drag radial

500HP
3200 lbs for awd / 3000lbs for RWD


RWD would be a lot easier to build, but would seem on the street AWD would be a much easier vehicle to drive, and not have to worry about rain + DRs...
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Old April 1st, 2013, 04:42 PM   #2
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Some of the diesel drag trucks use 4x4 for racing. Looks odd with stickies all around. Talk about run.
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Old April 1st, 2013, 04:50 PM   #3
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Always going to be someone faster 2wd vs 2wd, you can out hook a faster car in street conditions with awd though. I'd go awd with the understanding that I'm going to lose to something eventually anyways but I'll look way cooler doing burnouts sliding all 4
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Old April 1st, 2013, 05:37 PM   #4
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I have built a few v8 astro vans. The rear wheel drive ones were kind of fun to drive, you could slide around and get sideways. The awd we built was boring. It was fun on rainy days and towed a snowmobile trailer great.
3000 lbs with 500 hp will add to the fun factor with awd drive but I still think it would get boring unless you are racing all the time.
The awd will also not be as durable unless you spend a lot of time and money to make it work. Imo
Plenty of people are running sub nine second qt miles with a 10" tire and a lot more hp. I dont think awd is something I would worry about.
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Old April 1st, 2013, 05:45 PM   #5
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Turbo awd with a built automatic.

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Old April 1st, 2013, 05:54 PM   #6
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No, even if you are just talking about a drag race just about any vehicle can over power its rear tires and make them spin and loose traction....ask me how I know. This is what I am building to get the most out of every tire, AWD '68 Charger

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Old April 1st, 2013, 05:57 PM   #7
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He's not overpowering his rear tires.....



9 second van.....
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Old April 1st, 2013, 06:09 PM   #8
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No, he is not but he is wasting energy by lifting the front end. Some proper wheelie bars would keep the front end down (but then that can also lift the rear tires off the ground or at least lose some downward pressure on the tires and cause them to spin). It is nice to see the chassis straight and not twisting like you see a lot, that means that his rear link setup is done properly, not traction bars or parallel 4 bar but still, I think he could do even better.

Also do not forget that he is on a meticulously prepped and maintained surface with specialized tires. Those are the only reasons he has enough traction to lift the front end like that. Most any normal vehicle on normal surfaces and normal tires has a snowball's chance in hell of doing that. Yes, I know there are pro-street cars that can still pull a wheelie but again, you are wasting engine power doing that. If the CoG was lower (and/or further forward), it would be more difficult.

Those rear engine badass sand rails can pull a wheelie too with paddle tires, but if the engine was in the middle where it should be, they would be winning more drag races and not just showing off with front tires 6 feet in the air. It looks really cool, no denying that but if just speed and acceleration is what you are after, they are doing it wrong
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Old April 1st, 2013, 06:12 PM   #9
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You should ask that guy with the yellow sand drag jeep.


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Old April 1st, 2013, 06:15 PM   #10
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Quote:
Originally Posted by BlooMule View Post
He's not overpowering his rear tires.....



9 second van.....
He is also running slicks on a prepped track...good luck hooking up on the street like that.



AWD = better for the street
RWD = better for the track

Not saying there aren't fast rwd street cars or fast awd track cars, but generally...when you can run a set of slicks on a prepped track, you don't need awd to put the power down. On the street, where you are not likely to be running slicks and surface prep is far from ideal, awd will let you launch much harder.

My truck is useless trying to leave the line hard in 2wd (tuned ecoboost f150, around 400rwhp). Throw it in 4wd and do a boost launch, it will break your neck.
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Old April 1st, 2013, 06:19 PM   #11
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He's since tamed the beast.....


He's running faster now. High 9's.
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Old April 1st, 2013, 06:24 PM   #12
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I think I've seen stories on that. Hard to get a brick to go like that with a aluminum small block, but he does it.
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Old April 1st, 2013, 06:29 PM   #13
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Quote:
Originally Posted by BlooMule View Post
He's not overpowering his rear tires.....



9 second van.....
I would be building RWD is if it was a track car, for sure. You can certainly hook with RWD. But, could you launch well, on a street with some dirt or gravel on it, or hitting a big bump or pothole, or it rains and you are out on near-slicks.

Thinking for the street, AWD would be fun, and unique.

I have the built automatic part already, and a Sy/Ty transfer case, which is capable of handling the LS2.

But the other way, using a dead front axle and eliminating the t-case and front shaft would make it lighter and exhaust would be much easier to run. Since its all going into a Jeep, keeping all 4 wheels being driven seemed more in character..

Hmm....

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Old April 1st, 2013, 06:35 PM   #14
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Its a CJ6, so it'd look something like this, 2wd: (without the Lenco...).. might look nice without the shiny bits, and some Torq Thrusts under it...

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Old April 1st, 2013, 06:36 PM   #15
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He also drives it on the street. He does race engine machining out of his garage.

Talk to him for 5 minutes and you get winded. The man is hyper, to say the least.

Anyway, the point was more about "overpowering the tires". I used Dave's van as an example because cargo vans are generally traction challenged.

I also know someone that is putting a C5 Corvette's drivetrain and suspension under a 65 Chevy van, mostly for show, but after he retires it from the show circuit it will be driven hard.

With enough money, I would love to make a roadburner out of something like this:

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Old April 1st, 2013, 06:40 PM   #16
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Quote:
Originally Posted by Haggar View Post
Its a CJ6, so it'd look something like this, 2wd: (without the Lenco...).. might look nice without the shiny bits, and some Torq Thrusts under it...

A 'roadracer' jeep wouldn't be much different from building something like this:

http://www.hotrod.com/featuredvehicl...e/viewall.html
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Old April 1st, 2013, 06:40 PM   #17
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this blue one runs 8s:


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Old April 1st, 2013, 06:42 PM   #18
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Quote:
Originally Posted by Motorcitydak View Post
No, even if you are just talking about a drag race just about any vehicle can over power its rear tires and make them spin and loose traction....ask me how I know. This is what I am building to get the most out of every tire, AWD '68 Charger

For the love of God please make a build thread on this car. I can't wait to see it finished.
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Old April 1st, 2013, 06:43 PM   #19
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Quote:
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For the love of God please make a build thread on this car. I can't wait to see it finished.
That one makes me moist.
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Old April 1st, 2013, 06:43 PM   #20
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Quote:
Originally Posted by BlooMule View Post
A 'roadracer' jeep wouldn't be much different from building something like this:
Yeah, its easy enough to make AWD, which is the plan. Just debating if I should go 2wd instead.

If I build some outside the frame headers, then I don't have to worry about packaging them past the front driveshaft. I haven't found any outside the frame headers for CJs with LSx motors, except the ones from AA, which are smaller tubes than I want, and aren't for pre-72 CJs...
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