Valve Spring Change with engine in car.
Thread Starter
TECH Apprentice
Joined: Oct 2016
Posts: 321
Likes: 30
From: Massachusetts
For an LS1 with 241 cylinder heads it is separate so when you go to purchase the FELPRO valve stem seal kit your only going to get the valve seals. When you pull the valve spring and remove the valve stem seal you can then remove the seat the valve spring sits on. When replacing the valve stem seals the black ones are for intake and brown ones for the exhaust.
https://www.summitracing.com/parts/FEL-SS71039
Thread Starter
TECH Apprentice
Joined: Oct 2016
Posts: 321
Likes: 30
From: Massachusetts
TECH Apprentice
Joined: Nov 2008
Posts: 322
Likes: 30
From: Arizona
I did it on my 4th gen with LT1. You will want this tool:
http://vincihiperformance.com/TOOLS%...NT%20PAGE.HTML
Makes the job pretty easy. I would go with dual valve springs. Half the chance you drop a valve
http://vincihiperformance.com/TOOLS%...NT%20PAGE.HTML
Makes the job pretty easy. I would go with dual valve springs. Half the chance you drop a valve
Lowering the K member is really really easy, and makes a huge difference when working on the top end in a 4th gen.
But I have done valve springs in a F body before without lowering the k member and it was not horrible. Not fun but not too bad.
But I have done valve springs in a F body before without lowering the k member and it was not horrible. Not fun but not too bad.
Last edited by 00pooterSS; Apr 13, 2021 at 12:26 PM.
