12mm A1 studs are not $700! More like $400~$500. Comparable to the same ARPs.

 

where have you seen them at? could you get me a link or can our sponsors here get them? i found two shops online that have them one for like 710 and the other for around 750

 

12MM HEAD STUDS, STANDARD, 12 VALVE, 24 VALVE, HEX HEAD BROACH Haisley Machine

 

thanks for the link. are they that much better than the arps? what makes them a nicer stud if you dont mind me asking?

 

I got mine at pdr they have both arp and A1's heres the link PDR Diesel Performance: H/D Stud Kits

 

i put the ARPs in mine and love them 62psi of boost and alot of racing later havent lost torque they were easy to install did require the rockers it was 80$ they thak off .001 by .5 i think but it was no big deal would recomend them best 500 i ever spent

http://www.trueperformancediesel.com/page/401455708 i aint the cheepest but heres my link

 

It's my opinion that both ARP and A1 make an excellent product. They both are made from comparable alloys (no magic for either).

If both products cost approximately $450, and the ARPs require an additional $80 for milling the pedestals, my cheap hiney went with the A1s simply because with the completion of the installation, they cost less.

I've run many 1/8 & 1/4 mile passes with well over 70psig boost having no issues.

 

from the haisley site

RECOMMENDED FOR APPLICATIONS OF 80 PSI BOOST AND UNDER WITH SINGLE CHARGER AND NO DRUGS.

THE HEAD BOLT HOLES IN THE CUMMINS BLOCKS ARE NOT TAPPED TO THE BOTTOM. WE HAVE DESIGNED THESE STUDS WITH MORE THREADS FOR LESS STRESS TO THE BLOCK AS WELL AS THE STUD. YOU WILL NEED A 12MM X 1.75 BOTTOMING TAP. IF YOU DO NOT HAVE ONE, WE HAVE THEM FOR SALE.

 

looks like i will probably be going with the A1's then. how hard is it to bottom tap the block? is it pretty simple, or is it a pain trying to spin those threads

 

As a basic overview ~ http://www.dieseltruckresource.com/d....html?t=213091

Torque them COLD.