Big TCs + Big TQ = broken tailshaft housing!
04-02-2002, 09:41 PM
#1
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Big TCs + Big TQ = broken tailshaft housing! Just a tip for those of you that are stepping up to real power and have big TC's.
BUY A GOOD AFTERMARKET TORQUE ARM!!!!!
I broke my second tailshaft housing today on the dyno. snapped it clean in half!
Apparently I am in the minority but after talking to Ray (the guy that builds the Yank tannys) PatrickG just broke one recently and someone else in Texas last weekend. He says it is mostly due to the large amounts of TQ being applied to the TQ arm and the less than ideal TQ arm mounting location on the tailshaft housing itself. Most aftermarket TQ arms mount to the G-load brace which would cure this problem and aid in traction.
So if any of you are like me and try to go the cheap route on everything just keep my little drama in mind when you hit the dyno. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
BUY A GOOD AFTERMARKET TORQUE ARM!!!!!
I broke my second tailshaft housing today on the dyno. snapped it clean in half!
Apparently I am in the minority but after talking to Ray (the guy that builds the Yank tannys) PatrickG just broke one recently and someone else in Texas last weekend. He says it is mostly due to the large amounts of TQ being applied to the TQ arm and the less than ideal TQ arm mounting location on the tailshaft housing itself. Most aftermarket TQ arms mount to the G-load brace which would cure this problem and aid in traction.
So if any of you are like me and try to go the cheap route on everything just keep my little drama in mind when you hit the dyno. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
04-03-2002, 08:39 AM
#2
Re: Big TCs + Big TQ = broken tailshaft housing! Yeah it sucks breaking the tailshaft off, but it least it was on the dyno at Thunder Racing. I would have been so boned if it had happened at the track or worse, on the road somewhere far from home. Like you, I will soon be investing in a torque arm that relocates the front mount to a cross-member and get it off the trans.
The monster torque of the TR224 cam must be to blame, hehe! <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
The monster torque of the TR224 cam must be to blame, hehe! <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2018 Cadillac Escalade 6.2L A10 Pat G tuned.
LS1,LS2,LS3,LS7,LT1 Custom Camshaft Specialist For custom camshaft help press here.
Custom LSX tuning in person or via email press here.
04-04-2002, 11:01 AM
#3
Re: Big TCs + Big TQ = broken tailshaft housing! Huh, that's interesting.
I broke my driveshaft on the dyno with just 311rwhp. I wonder if it was the tailshaft that went, which then broke the driveshaft. The tailshaft was broken clean off, right near where it mounts to the tranny. Torque arm was bent to the side where the driveshaft hit it. One of the ears of the yoke on the driveshaft had sheared right off...makes me wonder what part actually broke first now.
Dope
I broke my driveshaft on the dyno with just 311rwhp. I wonder if it was the tailshaft that went, which then broke the driveshaft. The tailshaft was broken clean off, right near where it mounts to the tranny. Torque arm was bent to the side where the driveshaft hit it. One of the ears of the yoke on the driveshaft had sheared right off...makes me wonder what part actually broke first now.
Dope
04-04-2002, 11:15 AM
#4
LS1Tech Co-Founder
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Re: Big TCs + Big TQ = broken tailshaft housing! Wow, that blows.
I have the stock steel driveshaft, a beefed FLP tranny, and TR tq arm still mounted to the tranny.
I have about 40 dyno pulls on the car, and 300 passes with this setup.
All good.
I have the stock steel driveshaft, a beefed FLP tranny, and TR tq arm still mounted to the tranny.
I have about 40 dyno pulls on the car, and 300 passes with this setup.
All good.
04-04-2002, 11:27 AM
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Re: Big TCs + Big TQ = broken tailshaft housing! I have the steel DS also and I never had any issues with more than 20 dyno pulls but all of a sudden I am breaking them. The only thing I changed is the heads/cam and I put my stock springs back in the car. Wierd I know but I just wanted others to know what COULD happen and heopfully they wont break it twice like me. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
04-04-2002, 07:30 PM
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Re: Big TCs + Big TQ = broken tailshaft housing! <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />
More info on this please? Why only on the dyno, not at the track? This smells of something else going on / contributing factors of some sort..... <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" /> <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" />
More info on this please? Why only on the dyno, not at the track? This smells of something else going on / contributing factors of some sort..... <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" /> <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" />
