Expedition IRS... - The 1947 - Present Chevrolet & GMC Truck Message Board Network

PBFAB.COM · 05-07-2008, 08:16 AM

I know there's been a lot of talk about using an Expedition IRS and inquiries about the pros and cons. I also know there's been at least one 67-72 that's had a custom chassis built with an Expedition IRS out back (pretty sure it's an editor of Sport Truck's project?)

Anyways, I just got done installing one in a 50 Merc. Not quite a truck, but the IRS would definitely cross over nicely. Pretty much all anybody would want to keep would be the center section, the axles, the hubs, and the brakes. I don't think the rest of the components would be easily incorporated.

I went ahead and did some fabricted control arms, and spindles this time around, but will deinitely do tubular arms on the next one. The axles will have to be narrowed for this application, but they should work nicely on a C10. The differential on this thing is HUGE... I am sure it could handle a ton of torque. It's not the prettiest thing, but for the money I think it's a good IRS candidate.

here's some pics of the merc. chassis...

PBFAB.COM · 05-07-2008, 08:17 AM

two more...

1963chevyshort · 05-07-2008, 10:57 AM

Wow looks great Nathan. iI see you are still coming up with great ideas.

danielwetpaint · 05-07-2008, 03:22 PM

That's Artwork!!

Frizzle Fry · 05-07-2008, 06:14 PM

Very Nice! I bet that would work well in a 427 Cobra kit

jimmydean · 05-07-2008, 08:23 PM

Those control arms are crazy! Awesome work as always.

LMDGUY · 05-07-2008, 10:07 PM

way cool! Did you make the frame ? if so what front suspension are you running ??

PBFAB.COM · 05-08-2008, 01:48 AM

Quote:

Originally Posted by LMDGUY

way cool! Did you make the frame ? if so what front suspension are you running ??

It is a custom chassis I built, and I used C4 front suspension with bags... the shockwaves just weren't getting us the extra 1.5" of travel we needed.

LMDGUY · 05-08-2008, 07:59 AM

Quote:

Originally Posted by porterbuilt

It is a custom chassis I built, and I used C4 front suspension with bags... the shockwaves just weren't getting us the extra 1.5" of travel we needed.

SWEET!! I have a 64 falcon that Iv been working on but have put at a stand still till my chevy it done.. did a mustang II front end and Im not to happy with the way the crossmeber will be close to the ground. Im gonna look @ other options

oldspowered67C10 · 05-08-2008, 11:37 AM

Very nice work. Do you use a CNC plasma to cut stuff out? If Im not mistaken the expedetion uses a 9.75" ring gear and is plenty stout. Heres a couple of pics on the early and late expedition IRS set-ups, I think the one with the red calipers is like 06-earlier and the other 07-up.

kyle4381 · 05-08-2008, 05:11 PM

Nice work... It looks like you have a few hours into that project...

PBFAB.COM · 05-08-2008, 06:09 PM

Quote:

Originally Posted by kyle4381

Nice work... It looks like you have a few hours into that project...

Just a few!

PBFAB.COM · 05-08-2008, 06:18 PM

Quote:

Originally Posted by oldspowered67C10

Very nice work. Do you use a CNC plasma to cut stuff out?

I cut everything out by hand with a torch.... yeah right!

I used to use a hand plasma and grinder... then I was able to purchase a CNC plasma about four years ago. It makes life so much easier!

Slmd92DIME · 05-09-2008, 01:04 AM

Awesome work man... one of these days I will do a IRS.... one of these days.

scotts62 · 05-09-2008, 02:07 AM

Thats cool!! Looks awsome!!

randyjohn · 05-09-2008, 07:43 AM

now you just have to make another kit for the conversion.

greene · 02-20-2012, 12:48 PM

hey nate is that a poly bushing that you used to connect the spindle to the controll arm? if so how long is that if not what is it? i really like this set up as it really eliminates bump steer thanks for any info. and would you do another set up like this knowing how it works or would you change anything?

502ms · 02-20-2012, 04:07 PM

you are a machine! genius...I cannot wait to see how you incorporate this into future products

**67cheby** · 02-20-2012, 07:45 PM

wow....never cease to AMAZE !!

**robnolimit** · 02-22-2012, 12:27 PM

Great work Nate. I have used the Crown Vic IRS many times, it may be a little omre user friendly. Cool stuff. Keep it coming.

andrewmp6 · 02-23-2012, 03:11 AM

Rob what crown vic irs ?

**robnolimit** · 02-23-2012, 11:19 AM

I have to confess, I don't know the year spec., but, middle to late 90's, may be the same up to '02.

PBFAB.COM · 02-23-2012, 03:05 PM

Quote:

Originally Posted by robnolimit

Great work Nate. I have used the Crown Vic IRS many times, it may be a little omre user friendly. Cool stuff. Keep it coming.

I looked into those... seem like a good option. This was what the customer wanted to use... so that's what he got! LOL

This is a pretty old thread... almost forgot all about that car. I will need to see if I can find some pics of it to post up... came out really nice.

Nate

shawno72 · 02-23-2012, 03:35 PM

It's wild and I love it. I bet the ferd guys are up in arms over us wanting to steal there read ends

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andrewmp6 · 02-24-2012, 01:55 AM

Rob i know the 98 up uses a 4 link and watts link 97 back was a trianglated 4 link.The lincoln mark 8,thunderbird and cougar used the same irs besides them the 99-04 cobra mustang are the only irs cars fords made i know of.

05-07-2008, 08:16 AM	#1
PBFAB.COM Senior Member Join Date: Dec 2003 Location: Mesa,Az Posts: 3,981	Expedition IRS... I know there's been a lot of talk about using an Expedition IRS and inquiries about the pros and cons. I also know there's been at least one 67-72 that's had a custom chassis built with an Expedition IRS out back (pretty sure it's an editor of Sport Truck's project?) Anyways, I just got done installing one in a 50 Merc. Not quite a truck, but the IRS would definitely cross over nicely. Pretty much all anybody would want to keep would be the center section, the axles, the hubs, and the brakes. I don't think the rest of the components would be easily incorporated. I went ahead and did some fabricted control arms, and spindles this time around, but will deinitely do tubular arms on the next one. The axles will have to be narrowed for this application, but they should work nicely on a C10. The differential on this thing is HUGE... I am sure it could handle a ton of torque. It's not the prettiest thing, but for the money I think it's a good IRS candidate. here's some pics of the merc. chassis... Attached Images __________________ www.PorterbuiltFabrication.com Phone: 480-297-2621 E-mail: sales@pbfab.com Find us on FaceBook under Porterbuilt Fabrication Specializing in Chassis and Suspension Components for your Classic Chevrolet Truck. We offer components from the following manufacturers: Porterbuilt Accuair Ridetech (Air Ride Technologies) Air Lift Wilwood Intro Unisteer ECE Gotta Show Air Lift Borgeson CPP Supporting this forum since 2003!

05-07-2008, 08:17 AM	#2
PBFAB.COM Senior Member Join Date: Dec 2003 Location: Mesa,Az Posts: 3,981	Re: Expidition IRS... two more... Attached Images __________________ www.PorterbuiltFabrication.com Phone: 480-297-2621 E-mail: sales@pbfab.com Find us on FaceBook under Porterbuilt Fabrication Specializing in Chassis and Suspension Components for your Classic Chevrolet Truck. We offer components from the following manufacturers: Porterbuilt Accuair Ridetech (Air Ride Technologies) Air Lift Wilwood Intro Unisteer ECE Gotta Show Air Lift Borgeson CPP Supporting this forum since 2003!

05-07-2008, 10:57 AM	#3
1963chevyshort New Member Join Date: Mar 2007 Location: Houston,TX Posts: 261	Re: Expidition IRS... Wow looks great Nathan. iI see you are still coming up with great ideas. __________________ Anthony 63 chevy stepside SWB 57 chevy 2dr hrdtop belair

05-07-2008, 03:22 PM	#4
danielwetpaint Registered User Join Date: Feb 2008 Location: Wye Mtn Ark Posts: 58	Re: Expidition IRS... That's Artwork!! __________________ Current ridesne owner GMC 1974 swb, 1986 Chevy lwb,chopped top '85 S-10,1948 Stylemaster rat rod,'2008 Honda Civ.Chopped top '46 dodge.

05-07-2008, 06:14 PM	#5
Frizzle Fry Registered User Join Date: Aug 2005 Location: Hillsboro Oregon Posts: 6,449	Re: Expidition IRS... Very Nice! I bet that would work well in a 427 Cobra kit

05-07-2008, 08:23 PM	#6
jimmydean Registered User Join Date: May 2005 Location: Beaverton, OR Posts: 3,728	Re: Expidition IRS... Those control arms are crazy! Awesome work as always. __________________ New Project: 1966 LWB C20 Plans: 1/2 ton conversion Dropmember front Dropmember rear Corvette discs Restored raised bed http://67-72chevytrucks.com/vboard/s....php?p=4295210

05-07-2008, 10:07 PM	#7
LMDGUY Registered User Join Date: Jan 2008 Location: Phx,AZ Posts: 352	Re: Expidition IRS... way cool! Did you make the frame ? if so what front suspension are you running ?? __________________ 1973 C10 "Chain Reaction" Street Trucks cover Feb 2012 2013 Silverado 1964 Cadillac

05-08-2008, 11:37 AM	#10
oldspowered67C10 Registered User Join Date: Jan 2006 Location: Cherry Valley,Ca Posts: 468	Re: Expidition IRS... Very nice work. Do you use a CNC plasma to cut stuff out? If Im not mistaken the expedetion uses a 9.75" ring gear and is plenty stout. Heres a couple of pics on the early and late expedition IRS set-ups, I think the one with the red calipers is like 06-earlier and the other 07-up. Attached Images

05-08-2008, 05:11 PM	#11
kyle4381 Senior Member Join Date: Nov 2005 Location: AZ Posts: 416	Re: Expidition IRS... Nice work... It looks like you have a few hours into that project...

05-09-2008, 01:04 AM	#14
Slmd92DIME Registered User Join Date: Mar 2007 Location: West Virginia Posts: 481	Re: Expedition IRS... Awesome work man... one of these days I will do a IRS.... one of these days. __________________ My Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=269019 Petitioning No Regrets MD/WV

05-09-2008, 02:07 AM	#15
scotts62 One day... Join Date: Apr 2008 Location: Tuttle, Ok Posts: 9,240	Re: Expedition IRS... Thats cool!! Looks awsome!! __________________ Scott 93 crew cab build Project 62

05-09-2008, 07:43 AM	#16
randyjohn Registered User Join Date: Jun 2007 Location: grand forks, nd Posts: 154	Re: Expedition IRS... now you just have to make another kit for the conversion. __________________ It's peanut butter jelly time. '74 GMC 3/4 TON 2WD LB

02-20-2012, 12:48 PM	#17
greene Registered User Join Date: Dec 2008 Location: howell Posts: 32	Re: Expedition IRS... hey nate is that a poly bushing that you used to connect the spindle to the controll arm? if so how long is that if not what is it? i really like this set up as it really eliminates bump steer thanks for any info. and would you do another set up like this knowing how it works or would you change anything?

02-20-2012, 04:07 PM	#18
502ms Registered User Join Date: Aug 2011 Location: Atlanta, GA Posts: 1,523	Re: Expedition IRS... you are a machine! genius...I cannot wait to see how you incorporate this into future products __________________ Best Regards, Leon M. Instagram: @TheDirtyDianah Bagged \| 6.0L LS \| T-56 (6-Speed Manual) \| Turbo Burnout/Rolling Video: Chevy C10 Stepside 6.0L LSx & 6-Speed Manual

02-20-2012, 07:45 PM	#19
67cheby 67cheby Join Date: Sep 2008 Location: siloam springs ar 72761 Posts: 17,890	Re: Expedition IRS... wow....never cease to AMAZE !! __________________ Check out Slosh Tubz, bolt-in inner fenders for frame laying C-10's Slosh Tubz Introductory Price $559 67 Cheby's Dropmember Build Thread Slosh Tubz on Facebook http://67-72chevytrucks.com/vboard/s...d.php?t=554172



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02-22-2012, 12:27 PM	#20
robnolimit Senior Member Join Date: Jul 2010 Location: Dandridge, Tn. USA Posts: 2,226	Re: Expedition IRS... Great work Nate. I have used the Crown Vic IRS many times, it may be a little omre user friendly. Cool stuff. Keep it coming. __________________ GoodGuys 2012 Pro-Truck Champion 2012 Truckin' Throwdown Champion GoodGuys 2011 National Champion 2011 Truckin' Throwdown Champion GoodGuys 2010 National Champion Proud to put our products up against all others!

02-23-2012, 03:11 AM	#21
andrewmp6 Registered User Join Date: Jan 2009 Location: Louisville,Ky Posts: 5,811	Re: Expedition IRS... Rob what crown vic irs ?

02-23-2012, 11:19 AM	#22
robnolimit Senior Member Join Date: Jul 2010 Location: Dandridge, Tn. USA Posts: 2,226	Re: Expedition IRS... I have to confess, I don't know the year spec., but, middle to late 90's, may be the same up to '02. __________________ GoodGuys 2012 Pro-Truck Champion 2012 Truckin' Throwdown Champion GoodGuys 2011 National Champion 2011 Truckin' Throwdown Champion GoodGuys 2010 National Champion Proud to put our products up against all others!

02-23-2012, 03:35 PM	#24
shawno72 C/10 junkie Join Date: Nov 2010 Location: Stockton Ca Posts: 9,093	Re: Expedition IRS... It's wild and I love it. I bet the ferd guys are up in arms over us wanting to steal there read ends Posted via Mobile Device __________________ Shawn 70 LWB C10 current driver/project http://67-72chevytrucks.com/vboard/s...d.php?t=663051 68 SWB C10 Work in progress.....SOLD http://67-72chevytrucks.com/vboard/s...d.php?t=559520 72 LWB C10 Sold 71 LWB C10 Sold 68 LWB C10 CST Sold http://youtu.be/kbB0QrBIs9k My mom always had the best advice. It was just a tad late. After a fall that involved blood, she'd say....."Careful!"

02-24-2012, 01:55 AM	#25
andrewmp6 Registered User Join Date: Jan 2009 Location: Louisville,Ky Posts: 5,811	Re: Expedition IRS... Rob i know the 98 up uses a 4 link and watts link 97 back was a trianglated 4 link.The lincoln mark 8,thunderbird and cougar used the same irs besides them the 99-04 cobra mustang are the only irs cars fords made i know of.

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