valve adjustment help

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Nov 19, 2008 | 08:20 AM

RaM AiR 97

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From: Laredo Tx

valve adjustment help

Okay i know to start off with the cylinder # 1 rotate motor until lifter is all the way down bring to zero lash and so on with the rest. Now how much do i turn 1/4 or 3/4.

Nov 19, 2008 | 10:19 AM

riceburnerZ28

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From: Plano, IL

1/2 turn is all u need !

Nov 19, 2008 | 12:20 PM

bowtiekid

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another good way to do it is like this:

Starting with #1 cyl. rotate until the INTAKE rocker goes down then adjust the EXHAUST rocker becuase when the intake lobe is up (opening valve) the exhaust will be on base circle. takes out some of the guess work. Shop teacher tought me this method

hope it helps and good luck

-mark

Nov 19, 2008 | 12:28 PM

robsquikz28

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From: Chicago/Crown point

x2 with above but what lifters are you running because 1/2 turn might be to much

Nov 19, 2008 | 02:48 PM

1badzee

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From: SFL

Just turn until the pushrod stops spinning. Usually about half a turn.

Nov 19, 2008 | 05:27 PM

RaM AiR 97

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From: Laredo Tx

i did a 3/4 turn and it sounded like **** and like it needed to be brought back just a little bit . another question would i need to change out the stock springs

Nov 19, 2008 | 05:30 PM

lt1z28camaro

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From: Central Illinois

I wouldn't go any farther than 1/2 turn..

What all did you do to the motor/valvetrain? If you did a cam swap, while in there I'd replace the pushrods, springs and lifters.

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Nov 20, 2008 | 09:55 AM

RaM AiR 97

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From: Laredo Tx

the car is all stock no cam swap or anything. so would i need to change out the springs because some of my buddies are saying yes and no

Nov 20, 2008 | 02:21 PM

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leadfoot4

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From: Webster, NY

Quote:

Originally Posted by RaM AiR 97

the car is all stock no cam swap or anything. so would i need to change out the springs because some of my buddies are saying yes and no

The factory usually calls for one full turn, but 1/2-3/4 turn is sufficient. If the springs are old, a swap might be a good idea.

Nov 20, 2008 | 04:08 PM

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camar0corey

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From: Spring Hill, FL

This go around I'm going to try one full turn. I had issues at 3/4 turn. Damn valve adjustment, seems everyone has luck doing something else, doesn't seem to be set in concrete at all.

Nov 21, 2008 | 07:38 AM

#12

leadfoot4

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From: Webster, NY

Quote:

Originally Posted by camar0corey

This go around I'm going to try one full turn. I had issues at 3/4 turn. Damn valve adjustment, seems everyone has luck doing something else, doesn't seem to be set in concrete at all.

I might be spltting hairs, but if I were to offer an opinion as to why different methods obtain different results, it's because the LT-1 has aluminum heads. They expand at a different rate than iron heads, and also at a different rate than the iron block. Believe me, I've dinked around with mine far more than any other car I've had in the past, going back to 1968. The one difference between all the cars I've worked on? The aluminum heads....