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Author Topic:   Adjusting valves on 428 hydraulic

Posts: 180
From: Mount Pleasant,IA,USA
Registered: Aug 2001

posted 03-15-2002 12:55 PM     Click Here to See the Profile for ZEATER   Click Here to Email ZEATER     Edit/Delete Message   Reply w/Quote
I was always told to use the 1/2 turn past contact method on adjusting valves with hydraulic lifters. Recently I've heard of going an 1/8 of a turn or less to compensate for lifter pump up. The reasoning is more compression and better seal with the valves. I am in the process of upgrading to HD shafts aluminum spacers and billet stands and end stands. Thought I would get some opinions on the valve setting before I jump in.


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Posts: 6120
From: Delta BC Canada
Registered: Dec 99

posted 03-15-2002 07:52 PM     Click Here to See the Profile for TomP   Click Here to Email TomP     Edit/Delete Message   Reply w/Quote
I've always done it 1/2 turn, but then i rarely run adjustables on a hydraulic cam, if there are no major assembled height differences the stock rockers work fine.

I think 1/8th turn may cause some clatter.

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Posts: 27499
From: Lyons, IL, USA
Registered: May 99

posted 03-18-2002 03:21 PM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
I have always used the 1/8 method on FE's wiht adjustable rockers. 427 factory or aftermarket.A little morning sickness is all the noise that you will get, but a few hundred more usable RPM.

Alex Denysenko
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