340 adjustable LOCKING rocker arm kit
Napa has them listed for the 273 interference fit. Post a photo or two of your rockers. They may be a Crane or Isky that have a machined area for the lock nut. The stock ones didn't. https://www.napaonline.com/en/p/SEPMR1933?impressionRank=1 Summit has them listed as well. Sealed Power MR1933
Napa has them listed for the 273 interference fit. Post a photo or two of your rockers. They may be a Crane or Isky that have a machined area for the lock nut. The stock ones didn't. https://www.napaonline.com/en/p/SEPMR1933?impressionRank=1 Summit has them listed as well. Sealed Power MR1933
