Justin Gibbons

Just installed a new cam, lifters, rods, locks, and 918 springs. All componets are comp, but i'm getting alot of noise in the valvetrain, ticking,and chatering..kind of sounds like a sewing machine. Is this normal?

NviouSS

iTrader: (8)

need more info. specs of the cam and lenth of the pushrods?

Beaflag VonRathburg

iTrader: (176)

It could be normal. One guy around here put a cam in his GTO and thought it was making a ton of valve train noise. We weren't sure if the preload was off or not. It still put down strong numbers and ended up when he got the installation numbers back everything was fine.

Justin Gibbons

cam specs are;
Duration @ .050 212/218
Gross valve lift .522/.529
lope seperation 114.0

Cam is a comp XR265HR-14

Push rods are 7.4"

GuitsBoy

iTrader: (4)

Whats teh base circle? If its 1.450 a lot of people have had luck running 7.425 pushrods over th eusual 7.400. Anyway, some increased valvetrain noise is to be expected. The sewing machine noise is heard more often than not. Its worse with dual springs.

Justin Gibbons

....So is this noise from my springs or is there something wrong with my engine...