how to measure for pushrod length?
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Joined: Aug 2002
Posts: 676
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From: Detroit, Michigan
Car: 04 Xtreme Blazer
Engine: 4.3L V6
Transmission: 4L60E
how to measure for pushrod length?
how do I measure for pushrod length?
I know to get a pushrod length checker, but what is the procedure?
I know to get a pushrod length checker, but what is the procedure?
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Joined: Nov 2001
Posts: 2,428
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From: Fairview Heights Illinois
Car: 1986 Irocz
Engine: 305 TPI
Transmission: 700R4
Axle/Gears: 3.25:1
With the valve, spring & retainer installed,
use one pushrod of known length...preferably on the short side of stock length.
Get the cam over to the base circle.
One way is to crank the engine over by hand until the #1 exhaust valve just starts to open (with a rocker-arm installed),
then you would use the pushrod checker on the intake side of #1 cylinder.
Another way is to turn the crank to the (Compression) TDC mark and use the pushrod checker on the #1 intake side.
Stick the checker on the stud and then use a feeler gauge to test the length between the checker and the short pushrod.
Get a rod with the new longer length (old + feeler gauge reading) and install a roller rocker @ zero clearance and with a thin dab of antiseize on the roller tip that contacts the valve-tip.
Turn the engine over by hand so as to go through one rocker arm lift cycle so you can check the contact area on the valve-tip as left by the antiseize.
use one pushrod of known length...preferably on the short side of stock length.
Get the cam over to the base circle.
One way is to crank the engine over by hand until the #1 exhaust valve just starts to open (with a rocker-arm installed),
then you would use the pushrod checker on the intake side of #1 cylinder.
Another way is to turn the crank to the (Compression) TDC mark and use the pushrod checker on the #1 intake side.
Stick the checker on the stud and then use a feeler gauge to test the length between the checker and the short pushrod.
Get a rod with the new longer length (old + feeler gauge reading) and install a roller rocker @ zero clearance and with a thin dab of antiseize on the roller tip that contacts the valve-tip.
Turn the engine over by hand so as to go through one rocker arm lift cycle so you can check the contact area on the valve-tip as left by the antiseize.
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Joined: Jul 2001
Posts: 4,991
Likes: 1
From: Cheyenne, Wyoming
Car: 1992 B4C 1LE
Engine: Proaction 412, Accel singleplane
Transmission: built 700R4 w/custom converter
Axle/Gears: stock w/later 4th gen torsen pos
get the comp pushrod checker they come in a variety of sizes
I have a couple
I have a couple
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