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ARP main bolts / studs #1120792 11/24/11 07:22 PM 11/24/11 07:22 PM
Joined: Aug 2008 Posts: 347 FRANCE, Paris Chal340 OP enthusiast
Chal340 OP enthusiast Joined: Aug 2008 Posts: 347 FRANCE, Paris	What's the difference between bolt ARP 140-5001 and stud ARP 140-5401? Studs center caps not bolts? 70 Challenger, A66, 340 ci

Re: ARP main bolts / studs [Re: Chal340] #1120793 11/24/11 08:44 PM 11/24/11 08:44 PM
Joined: Jan 2003 Posts: 4,616 Kissimmee Fl. D dusturbd340W5 master
dusturbd340W5 master D Joined: Jan 2003 Posts: 4,616 Kissimmee Fl.	studs have more clamping force than bolts 70 duster full chassis super pro 416 CNC Indybrock heads 727 w/brake best so far 1.212 60 6.219 in 1/8 at 110.88 9.768 at 137.81 1/4

Re: ARP main bolts / studs [Re: dusturbd340W5] #1120794 11/25/11 02:20 AM 11/25/11 02:20 AM
Joined: Mar 2007 Posts: 181 Stow,Ohio RBSat66 member
RBSat66 member Joined: Mar 2007 Posts: 181 Stow,Ohio	You also need to check line bore on Main caps if you change to studs, because they have and more clamping pressure on the main caps from what I've been told.

Re: ARP main bolts / studs [Re: RBSat66] #1120795 11/25/11 02:35 AM 11/25/11 02:35 AM
Joined: Feb 2007 Posts: 1,025 Las Vegas, NV dodgeboy11 super stock
dodgeboy11 super stock Joined: Feb 2007 Posts: 1,025 Las Vegas, NV	The studs use more of the threads in the block which puts a different stress on the main saddles. Sometimes it changes nothing, sometimes it needs to be addressed.

Re: ARP main bolts / studs [Re: Chal340] #1120796 11/25/11 03:13 AM 11/25/11 03:13 AM
Joined: May 2008 Posts: 5,399 Aurora, Colorado 451Mopar master
451Mopar master Joined: May 2008 Posts: 5,399 Aurora, Colorado	Quote: What's the difference between bolt ARP 140-5001 and stud ARP 140-5401? Studs center caps not bolts? About $30 The studs are stronger, 200,000 psi vs 180,000 psi for the bolts and will have a higher clamping force. The bolts are pretty nice. I have them on my small block to clear the oil pump (studs don't clear the oil pump on a small block), but I use the studs on my big blocks.

Re: ARP main bolts / studs [Re: 451Mopar] #1120797 11/25/11 03:57 AM 11/25/11 03:57 AM
Joined: Jan 2003 Posts: 27,468 So Cal autoxcuda Too Many Posts
autoxcuda Too Many Posts Joined: Jan 2003 Posts: 27,468 So Cal	Quote: Quote: What's the difference between bolt ARP 140-5001 and stud ARP 140-5401? Studs center caps not bolts? About $30 The studs are stronger, 200,000 psi vs 180,000 psi for the bolts and will have a higher clamping force. The bolts are pretty nice. I have them on my small block to clear the oil pump (studs don't clear the oil pump on a small block), but I use the studs on my big blocks. I got a stud on my small block. Troy modified the nut by slightly rounding the nut and then shortening the stud exactly to the height of the nut. 6935262-CopyofPICT3436.JPG (63 downloads)

Re: ARP main bolts / studs [Re: autoxcuda] #1120798 11/25/11 08:11 AM 11/25/11 08:11 AM
Joined: Aug 2008 Posts: 347 FRANCE, Paris Chal340 OP enthusiast
Chal340 OP enthusiast Joined: Aug 2008 Posts: 347 FRANCE, Paris	Thanks, so with bolts, it's not necessary to line hone main caps? I will check if it's ok or not. ARP bolts are better than stock bolts? 70 Challenger, A66, 340 ci

Re: ARP main bolts / studs [Re: Chal340] #1120799 11/25/11 08:33 AM 11/25/11 08:33 AM
Joined: Jan 2003 Posts: 21,072 Niles , Ohio T therocks oh wait.but hey.lets see.oh yeah.
therocks oh wait.but hey.lets see.oh yeah. T Joined: Jan 2003 Posts: 21,072 Niles , Ohio	ARP are better than stock.Typically you dont need line hone when using them as they are just stronger.I use studs in my builds.Rocky Chrysler Firepower

Re: ARP main bolts / studs [Re: autoxcuda] #1120800 11/25/11 06:13 PM 11/25/11 06:13 PM
Joined: Jan 2003 Posts: 4,616 Kissimmee Fl. D dusturbd340W5 master
dusturbd340W5 master D Joined: Jan 2003 Posts: 4,616 Kissimmee Fl.	Quote: Quote: Quote: What's the difference between bolt ARP 140-5001 and stud ARP 140-5401? Studs center caps not bolts? About $30 The studs are stronger, 200,000 psi vs 180,000 psi for the bolts and will have a higher clamping force. The bolts are pretty nice. I have them on my small block to clear the oil pump (studs don't clear the oil pump on a small block), but I use the studs on my big blocks. I got a stud on my small block. Troy modified the nut by slightly rounding the nut and then shortening the stud exactly to the height of the nut. This is what we do on sb's 70 duster full chassis super pro 416 CNC Indybrock heads 727 w/brake best so far 1.212 60 6.219 in 1/8 at 110.88 9.768 at 137.81 1/4

Re: ARP main bolts / studs [Re: dusturbd340W5] #1120801 11/25/11 10:54 PM 11/25/11 10:54 PM
Joined: Mar 2006 Posts: 153 Antioch, CA lucky13 member
lucky13 member Joined: Mar 2006 Posts: 153 Antioch, CA	When you shorten/round over the nut that goes under the oil pump, do you do it by hand or a lathe? Any pics showing how much? www.racemagnum.com 1954 Plymouth Savoy 2 door

Re: ARP main bolts / studs [Re: lucky13] #1120802 11/26/11 12:21 PM 11/26/11 12:21 PM
Joined: Jan 2003 Posts: 4,616 Kissimmee Fl. D dusturbd340W5 master
dusturbd340W5 master D Joined: Jan 2003 Posts: 4,616 Kissimmee Fl.	Quote: When you shorten/round over the nut that goes under the oil pump, do you do it by hand or a lathe? Any pics showing how much? I just shorten the stud and use a 12 point ARP nut and it clears just fine. 70 duster full chassis super pro 416 CNC Indybrock heads 727 w/brake best so far 1.212 60 6.219 in 1/8 at 110.88 9.768 at 137.81 1/4

Re: ARP main bolts / studs [Re: dusturbd340W5] #1120803 11/26/11 12:29 PM 11/26/11 12:29 PM
Joined: Jan 2003 Posts: 16,376 D dogdays I Live Here
dogdays I Live Here D Joined: Jan 2003 Posts: 16,376	Well, now......... If the stud and the bolt are the same diameter and the same length and are torqued to the same amount they will have the SAME clamping force. It's simple material science. As long as the stud and the bolt are within their elastic limit it doesn't matter what strength they are. The clamping force is determined by the modulus of elasticity of the bolt material and all steels are pretty much the same. The stud engages more of the threads in the block and you don't get the same wear of the threads because after you turn them in the wear occurs at the nut end. Studs are generally considered to be better but they can be a pain to work around, especially on heads. R.

Re: ARP main bolts / studs [Re: dogdays] #1120804 11/26/11 12:46 PM 11/26/11 12:46 PM
Joined: Jan 2003 Posts: 4,616 Kissimmee Fl. D dusturbd340W5 master
dusturbd340W5 master D Joined: Jan 2003 Posts: 4,616 Kissimmee Fl.	Quote: Well, now......... If the stud and the bolt are the same diameter and the same length and are torqued to the same amount they will have the SAME clamping force. It's simple material science. As long as the stud and the bolt are within their elastic limit it doesn't matter what strength they are. The clamping force is determined by the modulus of elasticity of the bolt material and all steels are pretty much the same. The stud engages more of the threads in the block and you don't get the same wear of the threads because after you turn them in the wear occurs at the nut end. Studs are generally considered to be better but they can be a pain to work around, especially on heads. R. well think what you like but I have seen more than 1 motor have problems keeping a head gasket until it had studs installed and that cured the problem and the studs where the only thing changed. I run studs anywhere I can I even stud my oil pans. 70 duster full chassis super pro 416 CNC Indybrock heads 727 w/brake best so far 1.212 60 6.219 in 1/8 at 110.88 9.768 at 137.81 1/4

Re: ARP main bolts / studs [Re: dusturbd340W5] #1120805 11/26/11 01:22 PM 11/26/11 01:22 PM
Joined: Mar 2003 Posts: 571 Beaverton, OR, USA Alikazam super gas
Alikazam super gas Joined: Mar 2003 Posts: 571 Beaverton, OR, USA	Its a lot harder to misalign that gasket if you're using studs too! Or the head... or whatever! I use studs for my valve covers also (in addition to heads, mains, oil pan 4 corners only, outter 2 header bolts, etc.). Good luck!

Re: ARP main bolts / studs [Re: lucky13] #1120806 11/26/11 03:21 PM 11/26/11 03:21 PM
Joined: Jan 2003 Posts: 27,468 So Cal autoxcuda Too Many Posts
autoxcuda Too Many Posts Joined: Jan 2003 Posts: 27,468 So Cal	Quote: When you shorten/round over the nut that goes under the oil pump, do you do it by hand or a lathe? Any pics showing how much? Stud cut hand, finshed sized by belt sander. Nut dressed chucked in drill press cut down by hand file. This is a Milodon stud BTW. 6937213-11_6_10Md10.JPG (62 downloads)

Re: ARP main bolts / studs [Re: autoxcuda] #1120807 11/26/11 04:42 PM 11/26/11 04:42 PM
Joined: Mar 2006 Posts: 153 Antioch, CA lucky13 member
lucky13 member Joined: Mar 2006 Posts: 153 Antioch, CA	Quote: Quote: When you shorten/round over the nut that goes under the oil pump, do you do it by hand or a lathe? Any pics showing how much? Stud cut hand, finshed sized by belt sander. Nut dressed chucked in drill press cut down by hand file. This is a Milodon stud BTW. Thank you that gives me a better idea of how much to cut it down www.racemagnum.com 1954 Plymouth Savoy 2 door

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