REALTRUCK
clean and lean
- Joined
- Mar 30, 2012
- Messages
- 29
Hi, my question is do you have to use titanium valve spring retainers and 10 degree locks when using heavy duty valve springs? I have the peak diesel heavy duty valve springs [12 springs] and 4gsk for my 12 valve cummins. Its a daily driven truck and 4000 rpm will be seen once in awhile. i researched and some say titanium retainers are not recommended for the street. and some say the stock retainers will pull through with h/d springs. i know theres a lot of guys with h/d valve springs and 4gsk daily driven. What retainers and keepers are you guys using? Thanks