Due's IRS [Archive] - Pro-Touring.com

70ptta

02-10-2005, 09:43 AM

Hey guys I wanted to know what you think. I am looking into buying a Wayne Due front frame and I saw i can get the IRS kit a little cheaper if i buy them at the same time. What do you guys know about this vette suspension can it handle 700-800 rear wheel hp and how is traction from a stop. All my buddies go 1/4 mile racing so I know Ill be tagging along once in a while. With this rear will i be able to hook up if not can it be upgraded to do so. Last does anyone know the difference in price between the c4 and c5 frames over at Wyanes.

thanks

MrQuick

02-10-2005, 06:54 PM

I wouldn't waste it if your just going drag racing. You'd have to spend a bunch to make em strong enough. If you peek around the guys in the pits dragin vettes with that much HP and you'll probably notice a couple IRS's swapped out for straight axles. If you where a serious dual function racer than I can see it worth it. recipe: Viper Dana 44, moly axles and joints.

70ptta

02-10-2005, 07:56 PM

hey thanks for the info i dont feel to comfortable using the irs with a lot of power going through it anyway so i might stick to a 12 bolt or 9". anyone else

USAZR1

02-10-2005, 08:03 PM

A Viper Dana 44 and a Corvette Dana 44 are basically the same thing.
My 10sec ZR-1 wasn't very hard on parts at all.

MrQuick

02-10-2005, 08:14 PM

70ptta, are you building a 70? Actually the Viper has a couple more reinforcing ribs and there are more gear sets availible for it. ZR1's a different monster, those are hard to find now right? Hey Hoop, you still have that? The C5 frame is still being "refined" but its not much more.

ProdigyCustoms

02-10-2005, 08:27 PM

ZR1 is just a Dana 44. nothing different then a 6 speed LT1 coupe in those years. they can handle some power and hook amazingly well. there is a guy on the dragraceresults board running 10.20s every weekend with one. We used to have a 8 second street racer here in town. Of coarse, this is coming from a guy running a 12 bolt with 900hp. That is supposed to break isn;t it? Not in 5 years!
We put a IRS in Prodigy, not worried about breaking it

Conekiller13

02-10-2005, 11:33 PM

I think it's the half shafts that have the problem with an 800hp 6000rpm launch on 10.5" slicks...............not so much the center. :dunno:

MrQuick

02-10-2005, 11:57 PM

true, that be nasty.

Tiger

02-11-2005, 12:09 AM

Danny's Driveshafts make yokes and driveshafts for the corvette rear ends if you are able to break the original ones.
I'd give it a try.

And I actually have a dana 44 for my car.

Ciao
André

Steve68

02-11-2005, 06:55 AM

I've hated vettes with IRS, but for some reason I like the idea of putting one in my 68, I think there was one in a magazine not long ago,
anyone remember the issue or which one,

What does it intale to do this, and what are used rears going for?

I think or wonder how would the ride and handeling be, and how hard can you beat on it,

Does Wayne sell a bolt in unit for 68's?? Steve

MrQuick

02-11-2005, 08:23 AM

yes he does, well I think j/k give him a call. You can beat on them real hard but if your just building a strip car I don't see the point...well justify its cost imho. A dual purpose car yes. I rode in a Newman car and it was better than stock.

Steve68

02-11-2005, 08:59 AM

I have a dual purpose car, the Nova, down the strip, and on the street, no handeling, no problem, hahaha,

Now the Camaro, I'm might do a strip run once or twice, just to see how it goes, but when I looked at his web site, it looks to be alot of cutting and welding and I don't know if I want to start that at the stage I'm in, we'll see,

What are complete rears going for????

Whats a Newman car???

93Polo

02-11-2005, 09:11 AM

The Lt1 ZF6 and ZR1 diffs are really the same. If you're really serious about drag racing a C4 IRS http://www.whiteracingproducts.com/ did have some billet rear knuckles.

PT Dave

02-11-2005, 01:07 PM

Steve,
The article is in the March '05 Car Craft. It's a '67 with Wayne's IRS.
Real nice job. I'm currently setting up two '69s.

MrQuick

02-11-2005, 07:36 PM

hu im mistaken I thought the Z' stuff was beefed up. Thers a company named Paul Newmans(not the same as the actor/dressing guy?) that has retrofit kits for tri - fives. It was a 56 2door. Nicely done. You can find IRS's on ebay anywhere from $400- $700. Last time I looked anyways.

MuscleRodz

02-11-2005, 10:47 PM

MrQuick

02-11-2005, 11:12 PM

really, I asked and was told it wasn't. Damn is there anything that guy doesn't do?

70PTTA If you run a rear IFS it will limit your tire size to 315's... ok so im told, but im sure someone will tell me otherwise? :slap:

ProdigyCustoms

02-12-2005, 02:47 AM

Steve, I picked up a Dana 36, the lighter duty C4 rear, for $500 including the front suspension, but that was a deal. Dana 44s are the heavy duty units (kind of like 10 bolt and 12 bolts) and came in manual shift and ZR1 (which were 6 speed) C4s. They sell in the mid teen to high teens. I took a ride in a ProChared 94 Vette making 500 RWHP with a Dana 36 that was staying together, but he was not dead hooking at the dragstrip either. Michael's car has a 36 in it right now because i refuse to pay up for a 44 until I absolutly have to.

Steve68

02-12-2005, 04:20 AM

Frank have you looked at Wayne Dues kit, how much work would it be to do this, wadda think? Steve

ProdigyCustoms

02-12-2005, 04:40 AM

20 hours?

Steve68

02-12-2005, 09:27 AM

That dosen't sound that bad, I might look into this alittle more, maybe check on some rears, See you Monday????

Q ship

02-12-2005, 09:29 AM

Yep it is the same guy. He also used to race until a couple years ago.

Mike
Not that it really matters, but there are 2 Paul Newmans, 1 is the actor/driver and the other is the chassis guy.
So master fabricator Paul Newman at Car Creations in Templeton, California, was called upon

USAZR1

02-12-2005, 03:10 PM

The Lt1 ZF6 and ZR1 diffs are really the same. If you're really serious about drag racing a C4 IRS http://www.whiteracingproducts.com/ did have some billet rear knuckles.

Kurt's a friend of mine. If anyone knows how to build a stout Dana 44,he's the man to talk to. Kurt owns a 90 ZR-1 with 700hp 415" LT5 built by Bill Kirchhofer in Fort Washington,KY.

70ptta

02-12-2005, 05:00 PM

mrquick yes i am building a 70 ta. i am trying to make a web page but i have no clue how to do this ill let you know when i figure it out

67firebird467

02-13-2005, 04:33 PM

I am going with Waynes set up, I am going to use a dana 36 until it blows up, then I will look into a 44. I got my 36 for $200, it is hard to justify paying 10 times that much for the 44.

Doug

USAZR1

02-14-2005, 10:50 AM

I am going with Waynes set up, I am going to use a dana 36 until it blows up, then I will look into a 44. I got my 36 for $200, it is hard to justify paying 10 times that much for the 44.
Doug

I've bought and sold many Dana 44's for less than a grand. Dana 44's came in manual trans 85-96 Corvettes so there was a lot of them made.

Steve68

02-15-2005, 05:09 AM

Guys, are you talking about the center section, or a complete rear end, I think your talking about the center right, Steve

67firebird467

02-15-2005, 10:00 PM

I got the whole enchilada for 200, it was a good deal. I have not seen a 44 sell for less than 1500 on ebay yet.

Steve68

02-16-2005, 06:35 AM

If I find one for 200, I'm doing it!! I'm goin gto have to start scouring the yards, Steve

ilovefirstgens

02-20-2005, 12:50 AM

I'm looking into doing the irs swap after looking into how much a nice 12 bolt would be it looks like not too bad of a deal. What kind of offset wheel would you use with this, what are you guys doing with the brakes, will the stock transverse leaf set the car at a good height or should coilovers be used (who builds them and how much) and lastly will using irs limit me in clearance if I were to do put in mini tubs.