Rod Bolt Torque

Mike Pearson · 06-29-2008, 12:46 PM

What is the recommended rod bolt torque spec for small block Chevy small journal OEM rods. 283 style. Aftermarket bolts... Thanks...

Alan Roehrich · 06-29-2008, 01:04 PM

Which aftermarket bolts?

Mike Pearson · 06-29-2008, 02:35 PM

I think they are ARP bolts. As we remember the tourque was 43 ft lbs. The bolts have a dimple for a strrech gauge so they are a premium bolt.

Alan Roehrich · 06-29-2008, 02:40 PM

ARP bolts will have ARP roll marked into the bolt head.

Mike Pearson · 06-29-2008, 09:17 PM

Thanks, I guss there not ARP bolts. Maybe MR Gasket???? Anyone know what the torque is for the factory bolts are?

Alan Roehrich · 06-29-2008, 09:21 PM

The factory torque is about 32 to 35. However, that will not properly load an aftermarket bolt, and will likely cause a failure. Usually SPS marks their stuff just like ARP does. I'd be VERY hard pressed to use an unknown bolt. If you don't know what they are, get a machine shop to put some ARP bolts in for you.

Adger Smith · 06-29-2008, 09:21 PM

What kind of nut do they have?... Footed or crush lock/crimped? Stock for 11/32 bolt is 35 w oil

06-29-2008, 12:46 PM	#1
Mike Pearson VIP Member Join Date: Mar 2007 Posts: 2,447 Likes: 615 Liked 1,924 Times in 578 Posts	Rod Bolt Torque What is the recommended rod bolt torque spec for small block Chevy small journal OEM rods. 283 style. Aftermarket bolts... Thanks... __________________ Mike Pearson 2485 SS

06-29-2008, 01:04 PM	#2
Alan Roehrich Veteran Member Join Date: May 2006 Location: Murfreesboro TN Posts: 5,113 Likes: 1,571 Liked 1,821 Times in 413 Posts	Re: Rod Bolt Torque Which aftermarket bolts? __________________ Alan Roehrich 212A G/S

06-29-2008, 02:35 PM	#3
Mike Pearson VIP Member Join Date: Mar 2007 Posts: 2,447 Likes: 615 Liked 1,924 Times in 578 Posts	Re: Rod Bolt Torque I think they are ARP bolts. As we remember the tourque was 43 ft lbs. The bolts have a dimple for a strrech gauge so they are a premium bolt. __________________ Mike Pearson 2485 SS

06-29-2008, 02:40 PM	#4
Alan Roehrich Veteran Member Join Date: May 2006 Location: Murfreesboro TN Posts: 5,113 Likes: 1,571 Liked 1,821 Times in 413 Posts	Re: Rod Bolt Torque ARP bolts will have ARP roll marked into the bolt head. __________________ Alan Roehrich 212A G/S

06-29-2008, 09:17 PM	#5
Mike Pearson VIP Member Join Date: Mar 2007 Posts: 2,447 Likes: 615 Liked 1,924 Times in 578 Posts	Re: Rod Bolt Torque Thanks, I guss there not ARP bolts. Maybe MR Gasket???? Anyone know what the torque is for the factory bolts are? __________________ Mike Pearson 2485 SS

06-29-2008, 09:21 PM	#6
Alan Roehrich Veteran Member Join Date: May 2006 Location: Murfreesboro TN Posts: 5,113 Likes: 1,571 Liked 1,821 Times in 413 Posts	Re: Rod Bolt Torque The factory torque is about 32 to 35. However, that will not properly load an aftermarket bolt, and will likely cause a failure. Usually SPS marks their stuff just like ARP does. I'd be VERY hard pressed to use an unknown bolt. If you don't know what they are, get a machine shop to put some ARP bolts in for you. __________________ Alan Roehrich 212A G/S

06-29-2008, 09:21 PM	#7
Adger Smith VIP Member Join Date: Dec 2001 Location: Texarkana Ark/TX Posts: 2,446 Likes: 575 Liked 880 Times in 311 Posts	Re: Rod Bolt Torque What kind of nut do they have?... Footed or crush lock/crimped? Stock for 11/32 bolt is 35 w oil __________________ Adger Smith (Former SS) Last edited by Adger Smith; 06-29-2008 at 09:22 PM. Reason: SP