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Procedure for setting the valve springs

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Old Jul 19, 2002 | 08:54 PM
  #1  
spud's Avatar
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From: Marshall,IL
Car: 82 & 91 Firebird
Engine: 400 & 355
Transmission: TH350 & 700
Axle/Gears: 4:11 & 2.72
Procedure for setting the valve springs

There is an old school way of setting valves, Put the engine on #1 TDC (firing), You torque #1 intake and exhaust, & others, Then you crank the engine to #6 TDC and adjust. What are the other intake and exhaust valves you adjust at #1 then #6.
Thanks
John
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Old Jul 19, 2002 | 09:28 PM
  #2  
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From: Ontario, Canada
Car: 1988 Firebird S/E
Engine: 406Ci Vortec SBC
Transmission: TH-350/3500stall
Axle/Gears: 7.5" Auburn 4.10 Posi-Traction
Don't know which school that was, but it must be real old.
There is a valve adjusting sequence for adjusting valves on a
chev v8, but I don't feel like looking it up right now.
(Involves turning the motor to 4 crank positions and adjusting certain valves, at each position in a said order.)

There is an easy way to do this. that you can always
remember.

Turn the motor over with the starter ( disable the spark) till the intake valve on a cylinder *just closes* (on seat). Adjust the exhaust valve on that cylinder.
Now turn the motor over till the exhaust valve *just starts to open*, adjust the intake valve for that cylinder.
Repeat as nessessary.....

Intake closes, adjust the exhaust.
Exhaust opens adjust the intake.

What could be easier

Last edited by F-BIRD'88; Jul 19, 2002 at 09:46 PM.
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Old Jul 20, 2002 | 12:22 AM
  #3  
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From: ***'s country, henry county,ohio
With the engine in the # 1 firing position, (#1 top dead center, timing pointer at "0", both valves closed) Adjust these valves:
Exhaust : 1, 3, 4, 8
Intake : 1, 2, 5, 7

Turn the motor 1 revolution and adjust:
Exhaust : 2, 5, 6, 7
Intake : 3, 4, 6, 8

:hail: Factory Service Manuals :hail:
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Old Jul 20, 2002 | 03:55 AM
  #4  
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From: Marshall,IL
Car: 82 & 91 Firebird
Engine: 400 & 355
Transmission: TH350 & 700
Axle/Gears: 4:11 & 2.72
Jeff
Thank You, Thats what I had been needing.
John
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Old Jul 20, 2002 | 06:27 AM
  #5  
ede's Avatar
ede
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From: Jackson County
guess you really didn't want to know how to check the valve springs like you said in the topic of this thread did you?
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Old Jul 20, 2002 | 07:14 PM
  #6  
spud's Avatar
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From: Marshall,IL
Car: 82 & 91 Firebird
Engine: 400 & 355
Transmission: TH350 & 700
Axle/Gears: 4:11 & 2.72
Ede
Sorry, After reading my topic line, I could have very well been asking how to check installed heights, or just how to put the darn things on.
John
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Old Jul 20, 2002 | 07:43 PM
  #7  
ede's Avatar
ede
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From: Jackson County
yeah that's what i was expecting when i read it, how to check install height or something like that
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Old Jul 21, 2002 | 02:20 PM
  #8  
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From: ***'s country, henry county,ohio
It just goes to show you that the people at ThirdGen.org can sift through the B.S. right to the heart of the Question
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Old Feb 20, 2003 | 07:55 AM
  #9  
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From: ***'s country, henry county,ohio
Originally posted by jeffs82z28
With the engine in the # 1 firing position, (#1 top dead center, timing pointer at "0", both valves closed) Adjust these valves:
Exhaust : 1, 3, 4, 8
Intake : 1, 2, 5, 7

Turn the motor 1 revolution and adjust:
Exhaust : 2, 5, 6, 7
Intake : 3, 4, 6, 8

:hail: Factory Service Manuals :hail:
Just tighten the rocker nut till there is no lash betwee the pushrod and rocker, then tighten the nut an additional 1/2 to 3/4 of a turn.

This is assuming that you are using hydralic lifters and the camshaft isn't from the bottom of the page.
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