length of pushrods

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sinisterstang93

New Member

Jan 20, 2006

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Feb 28, 2006

#1

• Feb 28, 2006

• #1

i was wondering what length of pushrods i should use with my car. its got a comp cams with 555/565 lift but i put some 1.72's and its roughly 598/605 lift. im using stock heads and stock length pushrods for now, but i had heard that when goin with something over 540 lift, u need to change from stock length. What do you guys think would be the correct length?

 

Michael Yount

Mustang Master

Apr 10, 2002

9,039

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79

Charlotte, NC

Feb 28, 2006

#2

• Feb 28, 2006

• #2

Use a pushrod length checker -- they can and do vary from engine to engine...

 

Curse

Member

Apr 8, 2004

791

2

16

El Paso, TX

Feb 28, 2006

#3

• Feb 28, 2006

• #3

Michael Yount said:

Use a pushrod length checker -- they can and do vary from engine to engine...

Click to expand...

Only right way to know for sure.

 

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sinisterstang93

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Jan 20, 2006

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Mar 1, 2006

#4

• Mar 1, 2006

• #4

whats the right way to check the length of the pushrods?

 

$uperstang

New Member

Jul 20, 2004

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Detroit, MI

Mar 2, 2006

#5

• Mar 2, 2006

• #5

sinisterstang93 said:

whats the right way to check the length of the pushrods?

Click to expand...

Like Mike said, the right way is to buy a pushrod length checker. Call Summit they are like $12 and they will send you three different length checkers (push rods) with an adjustable nut that you can adjust for longer or shorter lengths.
I purchased the same kit and here is what I did:

Take a black magic marker and color the top of the valve black. Then place one of the length checkers in, I recommend starting with the stock length, put the rocker on and tighten properly. then turn the crank until the rocker goes all the way up and down. Then remove the rocker and look at the top of your valve. What you want to look for is the rub mark that your rocker just made on the top of the valve. You want to make sure that it stays in the center of the valve. Keep adjusting and tryiong this until you see that you are dead center of the valve. Then you measure then length of your checker and buy the right pushrod!

 

Jozey

New Member

Nov 11, 2003

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Tucson,AZ

Mar 2, 2006

#6

• Mar 2, 2006

• #6

correct me if im wrong someone.if the mark on the valve is toward the bottom then the pushrod is to long.and if its toward the top then its to short.

 

$uperstang

New Member

Jul 20, 2004

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Detroit, MI

Mar 2, 2006

#7

• Mar 2, 2006

• #7

Jozey said:

correct me if im wrong someone.if the mark on the valve is toward the bottom then the pushrod is to long.and if its toward the top then its to short.

Click to expand...

If U R refering to the bottom being toward the fender and the top being away from the fender then U R correct!

 

legalize420

Active Member

May 21, 2005

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South Florida

Mar 2, 2006

#8

• Mar 2, 2006

• #8

thats alot of cam for stock heads. did you upgrade the valvesprings?

 

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sinisterstang93

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Jan 20, 2006

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Mar 3, 2006

#9

• Mar 3, 2006

• #9

yeah,the springs are matched for the cam, and thanks for the info guys.