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1/2" 20 thread 2" long, grade 8 screw in stud adequate? #2292100 04/22/17 02:11 PM 04/22/17 02:11 PM
Joined: Dec 2013 Posts: 4,663 Wichita G GY3 OP master
GY3 OP master G Joined: Dec 2013 Posts: 4,663 Wichita	My car has a Dana 60 with aftermarket axles. I run a spool in it and have ET Street Pro Drag Radials. The car gets driven everwhere and raced on average every other weekend or so in the summer. Are the 1/2" 20 thread studs adequate? '63 Dodge 330 11.19 @ 121 mph Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs. 10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.

Re: 1/2" 20 thread 2" long, grade 8 screw in stud adequate? [Re: GY3] #2292287 04/22/17 07:22 PM 04/22/17 07:22 PM
Joined: Nov 2006 Posts: 1,456 oklahoma F forphorty pro stock
forphorty pro stock F Joined: Nov 2006 Posts: 1,456 oklahoma	What wheels? If a thick flanged aftermarket wheel, 2 inch long would be on the short side. Better to have a 3 inch long stud. The stud should protrude into the hex portion of the lug nut at least equal to the diameter of the stud. If starting from scratch and planning to go faster later on, A 5/8 inch stud might be a good idea.

Re: 1/2" 20 thread 2" long, grade 8 screw in stud adequate? [Re: forphorty] #2292333 04/22/17 08:42 PM 04/22/17 08:42 PM
Joined: Dec 2013 Posts: 4,663 Wichita G GY3 OP master
GY3 OP master G Joined: Dec 2013 Posts: 4,663 Wichita	Stock 15x8 steelies.

Re: 1/2" 20 thread 2" long, grade 8 screw in stud adequate? [Re: GY3] #2292338 04/22/17 08:51 PM 04/22/17 08:51 PM
Joined: Jan 2003 Posts: 28,067 Irving, TX feets Senior Management
feets Senior Management Joined: Jan 2003 Posts: 28,067 Irving, TX	As log as you're not running thick spacers you should be fine. We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind. - Stu Harmon

Re: 1/2" 20 thread 2" long, grade 8 screw in stud adequate? [Re: feets] #2292375 04/22/17 10:13 PM 04/22/17 10:13 PM
Joined: Dec 2013 Posts: 4,663 Wichita G GY3 OP master
GY3 OP master G Joined: Dec 2013 Posts: 4,663 Wichita	So why is this happening?! '63 Dodge 330 11.19 @ 121 mph Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs. 10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.

Re: 1/2" 20 thread 2" long, grade 8 screw in stud adequate? [Re: GY3] #2292389 04/22/17 10:52 PM 04/22/17 10:52 PM
Joined: Aug 2011 Posts: 2,853 Pattison Texas CSK master
CSK master Joined: Aug 2011 Posts: 2,853 Pattison Texas	This thread might help CLICK HERE FOR LINK Last edited by csk; 04/22/17 11:13 PM. 1968 Charger COLD A/C Hilborn EFI 512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim 2020 T/A 392 Stock 11.79 @ 114.5

Re: 1/2" 20 thread 2" long, grade 8 screw in stud adequate? [Re: GY3] #2292396 04/22/17 11:08 PM 04/22/17 11:08 PM
Joined: Dec 2007 Posts: 12,587 Great Neck,LI,new york hemi-itis I Live Here
hemi-itis I Live Here Joined: Dec 2007 Posts: 12,587 Great Neck,LI,new york	How can only 2 be bent HEMI-ITIS has no cure. My condition is fully BLOWN!!

Re: 1/2" 20 thread 2" long, grade 8 screw in stud adequate? [Re: hemi-itis] #2292428 04/22/17 11:55 PM 04/22/17 11:55 PM
Joined: Dec 2013 Posts: 4,663 Wichita G GY3 OP master
GY3 OP master G Joined: Dec 2013 Posts: 4,663 Wichita	Originally Posted By hemi-itis How can only 2 be bent All on drivers side were bent. These were two randomly picked for pics. '63 Dodge 330 11.19 @ 121 mph Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs. 10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.

Re: 1/2" 20 thread 2" long, grade 8 screw in stud adequate? [Re: GY3] #2292519 04/23/17 02:28 AM 04/23/17 02:28 AM
Joined: Dec 2005 Posts: 11,494 Fulton County, PA C CMcAllister Mr. Helpful
CMcAllister Mr. Helpful C Joined: Dec 2005 Posts: 11,494 Fulton County, PA	Who's studs? Picture of any markings on the head? Probably done on the street on a sharp turn with the spool in it. I've heard of guys breaking stock axles and wheel studs using a spool on the street. If the results don't match the theory, change the theory.

Re: 1/2" 20 thread 2" long, grade 8 screw in stud adequate? [Re: CMcAllister] #2292524 04/23/17 02:43 AM 04/23/17 02:43 AM
Joined: Dec 2013 Posts: 4,663 Wichita G GY3 OP master
GY3 OP master G Joined: Dec 2013 Posts: 4,663 Wichita	Originally Posted By CMcAllister Who's studs? Picture of any markings on the head? Probably done on the street on a sharp turn with the spool in it. I've heard of guys breaking stock axles and wheel studs using a spool on the street. Dr. Diff supplied with the axles. 6 dashes on the heads.

Re: 1/2" 20 thread 2" long, grade 8 screw in stud adequate? [Re: GY3] #2292595 04/23/17 10:29 AM 04/23/17 10:29 AM
Joined: Jan 2003 Posts: 3,136 Palm Coast, FL (near Daytona B... Blown_Hemi master
Blown_Hemi master Joined: Jan 2003 Posts: 3,136 Palm Coast, FL (near Daytona B...	Could try some ARP wheel studs. Ask me my opinion of Frank Mitchell....... A Mopar crook!

Re: 1/2" 20 thread 2" long, grade 8 screw in stud adequate? [Re: Blown_Hemi] #2292615 04/23/17 11:25 AM 04/23/17 11:25 AM
Joined: Dec 2013 Posts: 4,663 Wichita G GY3 OP master
GY3 OP master G Joined: Dec 2013 Posts: 4,663 Wichita	Originally Posted By Blown_Hemi Could try some ARP wheel studs. I already replaced with Strange studs. We'll see how these work..

Re: 1/2" 20 thread 2" long, grade 8 screw in stud adequate? [Re: CMcAllister] #2292724 04/23/17 02:16 PM 04/23/17 02:16 PM
Joined: Dec 2007 Posts: 12,587 Great Neck,LI,new york hemi-itis I Live Here
hemi-itis I Live Here Joined: Dec 2007 Posts: 12,587 Great Neck,LI,new york	Originally Posted By CMcAllister Who's studs? Picture of any markings on the head? Probably done on the street on a sharp turn with the spool in it. I've heard of guys breaking stock axles and wheel studs using a spool on the street. Not with a Dana! HEMI-ITIS has no cure. My condition is fully BLOWN!!

Re: 1/2" 20 thread 2" long, grade 8 screw in stud adequate? [Re: Blown_Hemi] #2292748 04/23/17 03:17 PM 04/23/17 03:17 PM
Joined: Jul 2004 Posts: 19,317 State of confusion T Thumperdart I Live Here
Thumperdart I Live Here T Joined: Jul 2004 Posts: 19,317 State of confusion	Originally Posted By Blown_Hemi Could try some ARP wheel studs. I run the 1/2 ARP studs and they are tough........... 72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....

Re: 1/2" 20 thread 2" long, grade 8 screw in stud adequate? [Re: hemi-itis] #2292753 04/23/17 03:25 PM 04/23/17 03:25 PM
Joined: Dec 2005 Posts: 11,494 Fulton County, PA C CMcAllister Mr. Helpful
CMcAllister Mr. Helpful C Joined: Dec 2005 Posts: 11,494 Fulton County, PA	Originally Posted By hemi-itis Originally Posted By CMcAllister Who's studs? Picture of any markings on the head? Probably done on the street on a sharp turn with the spool in it. I've heard of guys breaking stock axles and wheel studs using a spool on the street. Not with a Dana! No, not with a Dana, but it does demonstrate the loads put on axles and studs with a spool on the street. Especially with large, sticky tires. If the results don't match the theory, change the theory.

Re: 1/2" 20 thread 2" long, grade 8 screw in stud adequate? [Re: GY3] #2292878 04/23/17 07:14 PM 04/23/17 07:14 PM
Joined: Jun 2005 Posts: 6,257 gulfport, ms, west mi rowin4 master
rowin4 master Joined: Jun 2005 Posts: 6,257 gulfport, ms, west mi	I have had 1 ARP's break off last year. Passenger side, the 4 others were bent. Drivers side were straight. 1/2" x 3 " Why? The nuts were tight, could be that I dump the clutch at 4600 over and over and over . I find no fault with ARP wheel studs . I was going to go to 5/8 but Strange had a problem with re drilling their axles to 5/8 size. The 1/2" ARP studs will tale a lot of abuse if you keep your nuts tight and check the torque before every race. it's ok to butt heads, just don't do it with a butthead

Re: 1/2" 20 thread 2" long, grade 8 screw in stud adequate? [Re: rowin4] #2292880 04/23/17 07:22 PM 04/23/17 07:22 PM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Originally Posted By rowin4 I have had 1 ARP's break off last year. Passenger side, the 4 others were bent. Drivers side were straight. 1/2" x 3 " Why? The nuts were tight, could be that I dump the clutch at 4600 over and over and over . I find no fault with ARP wheel studs . I was going to go to 5/8 but Strange had a problem with re drilling their axles to 5/8 size. The 1/2" ARP studs will tale a lot of abuse if you keep your nuts tight and check the torque before every race. That just means your giving the RR that little extra load so the car leaves straight.. if the pre-load was equal the car would push to the right.. but you have more pre-load on the right to compensate for it

Re: 1/2" 20 thread 2" long, grade 8 screw in stud adequate? [Re: GY3] #2293155 04/24/17 11:39 AM 04/24/17 11:39 AM
Joined: Jan 2003 Posts: 13,351 Marion, South Carolina [><] an8sec70cuda I Live Here
an8sec70cuda I Live Here Joined: Jan 2003 Posts: 13,351 Marion, South Carolina [><]	FWIW...I've run my car w/ the same 1/2"-20 wheel studs for 13 years and never had a failure. The first 3 years were running mid 10s at 3700 lbs and then 10+ years of mid 9 sec passes at 3800 lbs. I did finally upgrade to 5/8" studs last year after the car dipped into the 8s on nitrous. All the 1/2" studs are still straight. I think they are ARP but not sure...whatever Moser uses. CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 18 spline 4 speed, Dana 60 '71 Demon, 340, low gear 904, 8.75 '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax

Re: 1/2" 20 thread 2" long, grade 8 screw in stud adequate? [Re: GY3] #2293584 04/25/17 12:16 AM 04/25/17 12:16 AM
Joined: Mar 2006 Posts: 9,813 MI, usa dvw master
dvw master Joined: Mar 2006 Posts: 9,813 MI, usa	In Dizusters case we found that the stock style steel wheel provides very little surface area against the rotor/drum surface. Even though the clamp load with 1/2 studs may be adequate the surface area is quite a bit smaller. This allows the wheel to slip against the rotor/drum face bending the studs. You either need more surface area or more clamp load. Doug

Re: 1/2" 20 thread 2" long, grade 8 screw in stud adequate? [Re: dvw] #2293744 04/25/17 10:58 AM 04/25/17 10:58 AM
Joined: Sep 2003 Posts: 19,307 north of coder moparx "Butt Crack Bob"
moparx "Butt Crack Bob" Joined: Sep 2003 Posts: 19,307 north of coder	Originally Posted By dvw In Dizusters case we found that the stock style steel wheel provides very little surface area against the rotor/drum surface. Even though the clamp load with 1/2 studs may be adequate the surface area is quite a bit smaller. This allows the wheel to slip against the rotor/drum face bending the studs. You either need more surface area or more clamp load. Doug didn't you guys weld in "bungs" of sorts [for lack of a better description] for the studs, or stiffening plates to the back side of the wheels to fix this issue ? or was that after switching over to the 5/8" studs ?

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