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Part number: 234-4601
Product Details
ARP 234-4601 Head Stud Kit
Products specifications
Cut to Fit No
Fastener Finish Black oxide
Fastener Material 8740 chromemoly
Fastener Style Stud
Head Style 12-point
Quantity Sold as a kit.
Washers Included Yes

ARP uses a premium grade 8740 alloy, which is rated far superior to "aircraft" quality, for their Pro Series cylinder head studs. Each stud is placed vertically in special racks and precisely heat-treated to 200,000 psi to ensure complete heat penetration. Then the studs are centerless ground to make them as close to perfectly concentric as possible, unlike lesser quality studs. Because ARP studs are manufactured to such exacting tolerances, you will note that gaskets and cylinder heads literally glide into position and are perfectly aligned -- something that won't happen with inferior quality head studs. By being thread rolled after heat-treat, these studs have about 1000% (that's ten times) better fatigue strength than those studs that are threaded prior to heat-treat (a very common industry practice). It costs a lot more to do it this way, because it's tough on tooling, but the results are well worth the extra effort. This cylinder head stud kit features undercut studs to more equalize the "stretch", making for a more consistent clamping force and helping to prevent blown head gaskets, and comes complete with premium quality parallel ground washers and compact 12-point style nuts for select Chevrolet small block applications (23 degree OEM cast iron and aluminum Chevrolet, Gen III Vortec/Truck; Airflow Research, Brownfield; Brodix -8, -10, -11, Track I, Dart Sportsman and Dart II and most Edelbrock, Trick Flow).

  • Centerless ground to be as perfectly concentric as possible
  • 1000% better fatigue strength than many other studs
  • Kit comes complete with premium quality parallel ground washers and compact 12-point style nuts
  • Manufactured from a premium grade 8740 alloy that is heat-treated to 200,000 psi, which is considerably stronger than Grade 8 hardware
  • The choice of many top professional engine builders for their all-out competition powerplants
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Ordered a set of Bilsteins on Sat. afternoon, and woke up today (monday) with a shiiping order #...Place is awesome, will order/refer..thank you
L
Shipping was fairly quick.  I'm satisfied so far.  I hope the product is as describe.
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Thanks - Great Product.  Fast Shipping.  Plus they answer the phones!
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Fitment
Chevrolet Bel Air
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