"While the above problems only become critical on race motors, valvetrain
deficiencies manifest themselves practically every time a cam is changed,
the block and heads are milled, or a simple valve job is performed. In stock
form, the Olds valvetrain is non-adjustable, so no tolerance exists for
changes anywhere in the system. For example, since the common everyday valve
job moves the valve seat higher up into the pocket, the valve stem height is
effectively increased, often upsetting the valvetrain geometry
(knowledgeable Olds head shops can compensate by slightly reducing valve
stem length). To permanently correct these problems, there are several
solutions. They are (from cheapest to most expensive): shimming or milling
the rocker arm pedestals, installing adjustable pushrods, or converting to
adjustable rocker arms by the use of a bolt-on aftermarket kit. The latter
solution is really the most practical."
I read this on the Olds FAQ web page listed in an
earlier post. That is a really great site...
Anyway, I guess if I have My Heads milled,Etc.
Then I'll have to be sure the Machine Shop is
aware of this....
I love the Net...If it werent for sites like these
I would just bolt this stuff back on and have money
left for Beer!
Gota go raise My prices on bids...Someones gotta pay
these bills
Rob Teed 74 Painted Desert Lansing,Mi
deficiencies manifest themselves practically every time a cam is changed,
the block and heads are milled, or a simple valve job is performed. In stock
form, the Olds valvetrain is non-adjustable, so no tolerance exists for
changes anywhere in the system. For example, since the common everyday valve
job moves the valve seat higher up into the pocket, the valve stem height is
effectively increased, often upsetting the valvetrain geometry
(knowledgeable Olds head shops can compensate by slightly reducing valve
stem length). To permanently correct these problems, there are several
solutions. They are (from cheapest to most expensive): shimming or milling
the rocker arm pedestals, installing adjustable pushrods, or converting to
adjustable rocker arms by the use of a bolt-on aftermarket kit. The latter
solution is really the most practical."
I read this on the Olds FAQ web page listed in an
earlier post. That is a really great site...
Anyway, I guess if I have My Heads milled,Etc.
Then I'll have to be sure the Machine Shop is
aware of this....
I love the Net...If it werent for sites like these
I would just bolt this stuff back on and have money
left for Beer!
Gota go raise My prices on bids...Someones gotta pay
these bills
Rob Teed 74 Painted Desert Lansing,Mi
