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Driveline
Experiences w/ Heavy Duty Halfshafts- in here
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<blockquote data-quote="BlownCobra" data-source="post: 331843" data-attributes="member: 8136"><p>I have had some time to research this, since I started the thread one month ago. I have spoken to several people, including some who race their IRS's and have more seat time then us new Cobra owners. The following seems to be true:</p><p></p><p>1) Automatics, unless equipped with a transbrake, do not leave as hard.</p><p>2) While we hear about people who have there stock shafts, run sticky tires, and have no problems; its either all in the way they launch (very soft and bog out of the hole) or as Uncle Meat said "its not IF but When" they will fail. </p><p>3) Tricks sometimes backfire. Some guys can get away with slipping the clutch out of the hole. Other's try it and smoke there clutch on the first run.:bash:</p><p>4) You DO NOT need wheel hop to break a shaft. In fact a soft compound sticky DR or slicks will stop the hop instantly. HOWEVER, you have just increased the amount of load on the shafts by 10 fold. Can someone say…Snap</p><p></p><p>Question: Are aftermarket shafts the right idea? </p><p>Answer: It's a step in the right direction. Understand you have now strengthened one part, so attention must now be placed on other parts. The outboard stubs and/or the differential for example.</p><p></p><p>At what cost: So now we beefed up or IRS's. The half shafts are $700 to $1000, not installed. Custom aftermarket outboard stubs??? Then installation.... And will hook as good as a straight axel???? Not sure but looking at the 60’ times turned in by expert drivers running modded Cobra’s and IRS’s, probably not! </p><p></p><p>And what about Straight axels??? Not a cheap proposition after you replace the stock 8.8 posi unit and axels. (8.8 in stock form is weaker then our IRS's) Plus a host of other parts... And guess what… the car hooks, but does not ride as good, plus has less resale value and zero trade in value.</p><p></p><p>So what’s the answer for people that want to drag race with the IRS, still drive the car on the street and do not want to de-value there ride… Time will tell. There are a lot of professional aftermarket driveshaft/cv companies out there that are making strides everyday. Mustang Magic in NY is working with an aftermarket manufacturer, as well as Amazon Racing, just a name a few. I am hopeful (even through practical) that we will have answers soon.</p></blockquote><p></p>
[QUOTE="BlownCobra, post: 331843, member: 8136"] I have had some time to research this, since I started the thread one month ago. I have spoken to several people, including some who race their IRS's and have more seat time then us new Cobra owners. The following seems to be true: 1) Automatics, unless equipped with a transbrake, do not leave as hard. 2) While we hear about people who have there stock shafts, run sticky tires, and have no problems; its either all in the way they launch (very soft and bog out of the hole) or as Uncle Meat said "its not IF but When" they will fail. 3) Tricks sometimes backfire. Some guys can get away with slipping the clutch out of the hole. Other's try it and smoke there clutch on the first run.:bash: 4) You DO NOT need wheel hop to break a shaft. In fact a soft compound sticky DR or slicks will stop the hop instantly. HOWEVER, you have just increased the amount of load on the shafts by 10 fold. Can someone say…Snap Question: Are aftermarket shafts the right idea? Answer: It's a step in the right direction. Understand you have now strengthened one part, so attention must now be placed on other parts. The outboard stubs and/or the differential for example. At what cost: So now we beefed up or IRS's. The half shafts are $700 to $1000, not installed. Custom aftermarket outboard stubs??? Then installation.... And will hook as good as a straight axel???? Not sure but looking at the 60’ times turned in by expert drivers running modded Cobra’s and IRS’s, probably not! And what about Straight axels??? Not a cheap proposition after you replace the stock 8.8 posi unit and axels. (8.8 in stock form is weaker then our IRS's) Plus a host of other parts... And guess what… the car hooks, but does not ride as good, plus has less resale value and zero trade in value. So what’s the answer for people that want to drag race with the IRS, still drive the car on the street and do not want to de-value there ride… Time will tell. There are a lot of professional aftermarket driveshaft/cv companies out there that are making strides everyday. Mustang Magic in NY is working with an aftermarket manufacturer, as well as Amazon Racing, just a name a few. I am hopeful (even through practical) that we will have answers soon. [/QUOTE]
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