not a must but the sages on here say they are :twisted:cmng said:i got Tomei Cam spec
260 lift 12.00 uprated Valve spring and Titanium retainer is must ??
yeah,whatever :twisted:Nad said:A must for long term reliability and reduce load/wear. Short term use, like Bruce's car gets its up to u
have you tried asking piper for a cam as they do all DP's cams,or they used to anyway just tell them what you want profile wise and if they don't already have it in stock,i'm sure they'll grind you 1cmng said:Emmm
i still doubt whether i should go to Tomei or HKS
HKS as far .. can retain OEM valvespring so on
but tomei is the concern
i have limited budget but still prefered tomei
but since valve spring and retainer is not cheap , i have thinking twice on it