ARP Fasteners for 4A-G Engines

ARP Fasteners
Description P/N Torque (lbs-ft)
Connecting Rod Bolts 203-6001 40
Main Bearing Studs 203-5403 60
Head Studs 203-4203 65-70
Flywheel Bolts 203-2802 ??

    NOTE:
  1. The torque values listed only apply when using the ARP Moly Assembly Lube.
  2. The head stud torque value listed is different than in ARP's included instructions because of some apparent head gasket sealing problems. These are the proven torque specs for a leak-free HG.
  3. The old flywheel bolt package only includes six flywheel bolts instead of the eight that more than 95% of all 4A-Gs use. I've since notified ARP of this discrepancy and they have a new P/N that includes eight bolts.
  4. Chase all thread holes w/ the proper thread cleaner/tap to insure a clean and consistent torque reading
  5. Install the ARP studs hand-tight only
  6. Apply the ARP Moly Lube liberally to all fastener surfaces; under the bolt/nut head, threads, holes, both sides of washers, etc.
  7. Use a torque wrench that is known and proven to be accurate
  8. ARP's fasteners need to be "torque cycled" (torque, release) a minimum of three times to assure proper clamping loads

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