Which main studs do I need for a 351W? One is like 10 bucks more and all the specs are the same when you compare them....I got the numbers through Summit
ARP-154-5403 OR ARP-154-5409
Same question about the head studs
ARP-154-4003 OR ARP-254-4503 (most likely using trickflow twisted wedge heads)
ARP-254-4503 has Undercut studs....whats that mean? theyre thinner right under the top threads? Do I want undercut as theyre alot more money?
ARP-154-5403 OR ARP-154-5409
Same question about the head studs
ARP-154-4003 OR ARP-254-4503 (most likely using trickflow twisted wedge heads)
ARP-254-4503 has Undercut studs....whats that mean? theyre thinner right under the top threads? Do I want undercut as theyre alot more money?
