Changing the 3800 valve springs to LS1 style spings requires LS1 style retainers to ensure proper spring install height.

CompCams 7˚ titanium retainers are American made from 6AL4V alloy and then heat treated. For performance without compromise these retainers deliver! Titanium retainers weigh 7.5 grams.

Modified Valve Spring Retainers have been modified to give an extra .030 clearance to the valve seal. They are required when using the XP cam on stock heads. They are steel and weigh in at 10.8 grams.