mxendres

Hi everyone. ive got a ls2 with 823 heads on it. the guy I bought the engine from installed new manley valves. Part number 11528-8 and 11527-8. So 2 questions.


1. If these are the valves that are actually in it. what valve springs should I use with (say for now) gmpp "asa" cam?


2. do the 2.190'' intake valves seem big? They seem to fit and seal the seat pretty well.

G Atsma

You're only dealing with .525 lift, so nothing special needed there.

KCS

iTrader: (20)

Manley's catalog says those are 3/8" stem BBC valves...

Can you post pics? I'd like to see this abortion of a cylinder head that you have.

A.R. Shale Targa

iTrader: (2)

My thoughts exactly......

mxendres

Ok so yeah he told me the wrong valves they are the 2.165 Manley Race master ss valves. 117 g intake and 1.590 exhaust 94g. So it’s a sbe ls2. Any ptv issues if I go with a bigger cam and what valve springs should I run? The blue beehive .560 or upgrade to a double spring?

KCS

iTrader: (20)

I would go with a dual spring since the valves are so heavy.

mxendres

Any recommendations? I’m kinda on a budget and don’t want to spend 500 on springs. What if I did a blue beehive and swapped out the intake valves and put hollow ones in. I’ve just been doing some research.

speedtigger

iTrader: (16)

A good dual valve spring kit for your application will run between $199 and $299.
http://www.cammotion.com/valve-train-parts/valve-springs/valve-spring-kits/ls-650-dual-valve-springs-kit-with-steel-retainers/

mxendres

So I took some valves out, can anyone identify them? They say Manley H0414 on the stem of the intake and H0914 on the exhaust.