Dragracing IRS
Thread Starter
Burning Brakes
Joined: Dec 1999
Posts: 1,088
Likes: 0
From: Silver Spring, Md.
Dragracing IRS
Saw this browsing the web, an independant rear suspension with a Ford 9" 3rd member. http://www.kugelkomponents.com/produ...uspension.html
Drifting
Joined: Jul 2002
Posts: 1,820
Likes: 283
From: Puyallup WA
Re: Dragracing IRS (stinky)
This unit looks like it is aimed more at the street rod set. The half shafts, u-joints and stub axles don't look beefy enough to me to take the abuse of drag racing.
Now if you want a real drag racing IRS then go here:
www.tomsdifferentials.com/cat22.htm
Steve
Now if you want a real drag racing IRS then go here:
www.tomsdifferentials.com/cat22.htm
Steve
Racer
Joined: Sep 2001
Posts: 354
Likes: 0
From: Prineville Oregon
Re: Dragracing IRS (stinky)
Stinky,
I don't know about Smoked Tires but I bought he same center pieces as he did with the 30 spline inner axles. Worked good for two years but broke one stock outer axle this year. I now have the KA outer axles as well with 1/2" studs. You might as well save yourself some grief and just buy the whole package because if your making serious power you going to need it all to make it live any length of time.
Deen
I don't know about Smoked Tires but I bought he same center pieces as he did with the 30 spline inner axles. Worked good for two years but broke one stock outer axle this year. I now have the KA outer axles as well with 1/2" studs. You might as well save yourself some grief and just buy the whole package because if your making serious power you going to need it all to make it live any length of time.
Deen
Le Mans Master
Joined: Apr 2000
Posts: 7,562
Likes: 9
From: B'Ville NY
Cruise-In III Veteran
St. Jude Donor '05
Re: Dragracing IRS (stinky)
Nice! Waiting for my stuff to come in as we speak. Are those the 30-spline inners? Did ya get the KA outer axles as well?
Saw this browsing the web, an independant rear suspension with a Ford 9" 3rd member. http://www.kugelkomponents.com/produ...uspension.html
:cheers:
[Modified by SmokedTires, 6:52 AM 2/12/2004]
Thread Starter
Burning Brakes
Joined: Dec 1999
Posts: 1,088
Likes: 0
From: Silver Spring, Md.
Re: Dragracing IRS (DeenHylton)
Yup, I've got the KA outers coming as well. What level of mods did you have Toms perform on your posi unit...I see he offers 2 thru 7. I'm trying to determine what to have done with respect to clutch pack or no.
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Safety Car
Joined: Feb 2000
Posts: 4,564
Likes: 109
From: Austin Texas
Re: Dragracing IRS (stinky)
Just got off the phone with the owner of Kugles and he said that the center section, modified to fit a C4 frame, would run about $2000.
That is just about the same as it costs for Tom's to build me a complete cryoed D44....
And I don't know if you guys have been in a cave for a long time, but a Ford 9" is about one of the stoutest rear-ends around. These come with 31-spline axles, hardened.
That is just about the same as it costs for Tom's to build me a complete cryoed D44....
And I don't know if you guys have been in a cave for a long time, but a Ford 9" is about one of the stoutest rear-ends around. These come with 31-spline axles, hardened.
Race Director
Joined: Jan 2000
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From: Corsicana, Tx
2020 C2 of the Year - Modified Winner
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Re: Dragracing IRS (stinky)
If you get creative, you can do some pretty wild things. I have a Dana 60 IRS under my '67. It's based on a NOS Hemi case that was modified into an overgrown Vette diff assy. It has 35 spline axles, 3.5"x.134 wall halfshafts and Toms 31 spline outer axles.
If you aren't paying attention most folks don't notice that is what it is until you tell 'em to look close. Sneaky...it looks just like a Vette setup from the rear.
Let's see.....Vette- 8.2" ring gear...12 bolt- 8.875 ring gear...8-3/4" Mopar.....9" Ford........THEN the Dana 60- 9-3/4"!!!
I'm thinking it should hold for a while!
JIM
If you aren't paying attention most folks don't notice that is what it is until you tell 'em to look close. Sneaky...it looks just like a Vette setup from the rear.
Let's see.....Vette- 8.2" ring gear...12 bolt- 8.875 ring gear...8-3/4" Mopar.....9" Ford........THEN the Dana 60- 9-3/4"!!!
I'm thinking it should hold for a while!
JIM
Le Mans Master
Joined: Apr 2000
Posts: 7,562
Likes: 9
From: B'Ville NY
Cruise-In III Veteran
St. Jude Donor '05
Re: Dragracing IRS (stinky)
Yup, I've got the KA outers coming as well. What level of mods did you have Toms perform on your posi unit...I see he offers 2 thru 7. I'm trying to determine what to have done with respect to clutch pack or no.
http://www.tomsdifferentials.com/cat18.htm
Racer
Joined: Sep 2001
Posts: 354
Likes: 0
From: Prineville Oregon
Re: Dragracing IRS (stinky)
Stinky,
I went with the level 7 with oversized hardened pin but am having second thoughts about the "tuned" clutch packs. I think I should have left the spring pack in to compensate for the wear on the clutch frictions. I'm noticing less posi "action" now that I have 80 plus runs on the car. You do need the better clutch frictions as the material is less likely to break off under severe use (according to Tom) but the tuned part needs to be retuned every so often in my humble opinion.
As others have posted don't forget to add a six-link to your IRS if running 10.99 or quicker. I fabbed my own using "VB Products" racing strut rods in both the upper and lower positions. For more info on this subject do a search on 6-links as this has been discussed a number of times.
Deen
I went with the level 7 with oversized hardened pin but am having second thoughts about the "tuned" clutch packs. I think I should have left the spring pack in to compensate for the wear on the clutch frictions. I'm noticing less posi "action" now that I have 80 plus runs on the car. You do need the better clutch frictions as the material is less likely to break off under severe use (according to Tom) but the tuned part needs to be retuned every so often in my humble opinion.
As others have posted don't forget to add a six-link to your IRS if running 10.99 or quicker. I fabbed my own using "VB Products" racing strut rods in both the upper and lower positions. For more info on this subject do a search on 6-links as this has been discussed a number of times.
Deen
Thread Starter
Burning Brakes
Joined: Dec 1999
Posts: 1,088
Likes: 0
From: Silver Spring, Md.
Re: Dragracing IRS (DeenHylton)
Stinky,
As others have posted don't forget to add a six-link to your IRS if running 10.99 or quicker. I fabbed my own using "VB Products" racing strut rods in both the upper and lower positions. For more info on this subject do a search on 6-links as this has been discussed a number of times.
Deen
As others have posted don't forget to add a six-link to your IRS if running 10.99 or quicker. I fabbed my own using "VB Products" racing strut rods in both the upper and lower positions. For more info on this subject do a search on 6-links as this has been discussed a number of times.
Deen
Safety Car
Joined: Feb 2000
Posts: 4,564
Likes: 109
From: Austin Texas
Re: Dragracing IRS (DeenHylton)
Stinky,
As others have posted don't forget to add a six-link to your IRS if running 10.99 or quicker. I fabbed my own using "VB Products" racing strut rods in both the upper and lower positions. For more info on this subject do a search on 6-links as this has been discussed a number of times.
As others have posted don't forget to add a six-link to your IRS if running 10.99 or quicker. I fabbed my own using "VB Products" racing strut rods in both the upper and lower positions. For more info on this subject do a search on 6-links as this has been discussed a number of times.
His motor dynoed at 1021 HP (N/A) and he runs low 9's in the 1/4.
Racer
Joined: Sep 2001
Posts: 354
Likes: 0
From: Prineville Oregon
Re: Dragracing IRS (Joe90)
Joe90,
NHRA requires you to eliminate the IRS or mod to a 6-link too run faster than 10.99
If your buddies are allowed to run a stock rearend in the "low 9's"...then your racetrack is not a NHRA member track or the safety inspection team is sleeping on the job :sleep:
Deen
NHRA requires you to eliminate the IRS or mod to a 6-link too run faster than 10.99
If your buddies are allowed to run a stock rearend in the "low 9's"...then your racetrack is not a NHRA member track or the safety inspection team is sleeping on the job :sleep:
Deen
Melting Slicks
Joined: Sep 2000
Posts: 3,099
Likes: 0
From: PITTSBURGH PA
Cruise-In IV Veteran
Cruise-In V Veteran
Re: Dragracing IRS (DeenHylton)
Joe90,
NHRA requires you to eliminate the IRS or mod to a 6-link too run faster than 10.99
If your buddies are allowed to run a stock rearend in the "low 9's"...then your racetrack is not a NHRA member track or the safety inspection team is sleeping on the job :sleep:
Deen
NHRA requires you to eliminate the IRS or mod to a 6-link too run faster than 10.99
If your buddies are allowed to run a stock rearend in the "low 9's"...then your racetrack is not a NHRA member track or the safety inspection team is sleeping on the job :sleep:
Deen
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Re: Dragracing IRS (CORKVETTE1)
i believe the stock irs on the c-4s are legal down to 9.99 :cheers:
RACE ON!!!
