Why Switch to 7/16 Rocker Studs When LSx Use Only 5/16?
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From: San Jose, CA
Why Switch to 7/16 Rocker Studs When LSx Use Only 5/16?
Why do some suggest switching to 7/16 from 3/8 rocker studs on the LT1 when the LSx uses 5/16 and can run 1.8x rockers at much higher rpms?
Hal
Hal
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From: Little Rock, AR
IMHO, you can't make comparisons in that regard, since it is a different engine design.
You can use what you want, but note that 7/16 studs for the SBC family have been race proven for decades. Bigger studs were needed when the stock ones did not hold up. RPM and total valvetrain setup will help dictate what is best.
You can use what you want, but note that 7/16 studs for the SBC family have been race proven for decades. Bigger studs were needed when the stock ones did not hold up. RPM and total valvetrain setup will help dictate what is best.
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From: Woodstown, NJ
That's where the added lift makes the power, in the higher rpm range.
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From: Richmond B.C.
apples and oranges, LSx uses a bolt not a stud like gen 1 and 2. the stud in the earlier design has a tremendous amount of side loading on it from the pushrod because its a full floating design held up by the pushrod and valve on each end. you need the bigger studs to help eliminate power robbing and harmful deflection, which even still needs a stud girdle.
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From: San Jose, CA
Oh. All the stupid pics I saw of the LSx valvetrain showed a stud instead. How much more different could they have made the LT1 with the addition of it's reverse flowing heads as well? Really seems like that team of engineers should never be allowed to design another engine again. This is all why I am a little apprehensive of going with the new Camaro until it's proven to be a good car.
Hal
Hal
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Joined: Sep 2001
Posts: 4,152
From: Woodstown, NJ
Oh. All the stupid pics I saw of the LSx valvetrain showed a stud instead. How much more different could they have made the LT1 with the addition of it's reverse flowing heads as well? Really seems like that team of engineers should never be allowed to design another engine again. This is all why I am a little apprehensive of going with the new Camaro until it's proven to be a good car.
Hal
Hal
What the hell are you talking about?
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Joined: Nov 2002
Posts: 2,000
From: Richmond B.C.
huh? the LT1 uses the same valvetrain design as the original gen 1 small blocks since the 50's. were talking about what applies to you. 7/16" is the way to go, it takes no modding and the rocker arms are the same price as the 3/8" ones.
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Joined: Dec 2005
Posts: 426
From: Dayton, Ohio
IMHO, you can't make comparisons in that regard, since it is a different engine design.
You can use what you want, but note that 7/16 studs for the SBC family have been race proven for decades. Bigger studs were needed when the stock ones did not hold up. RPM and total valvetrain setup will help dictate what is best.
You can use what you want, but note that 7/16 studs for the SBC family have been race proven for decades. Bigger studs were needed when the stock ones did not hold up. RPM and total valvetrain setup will help dictate what is best.
Registered User
Joined: Jul 2007
Posts: 321
Oh. All the stupid pics I saw of the LSx valvetrain showed a stud instead. How much more different could they have made the LT1 with the addition of it's reverse flowing heads as well? Really seems like that team of engineers should never be allowed to design another engine again. This is all why I am a little apprehensive of going with the new Camaro until it's proven to be a good car.
Hal
Hal
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Joined: Aug 2005
Posts: 4,405
From: Kantuckee Yo'
Guess you are going to have to convince me that a smaller bolt is stronger and more durable than a larger bolt. I challenge you to convince me that I am "nuts".
Please feel free to run the smaller, weaker 3/8" studs. The rest of us would rather have the 7/16" studs for additional piece of mind.
Please feel free to run the smaller, weaker 3/8" studs. The rest of us would rather have the 7/16" studs for additional piece of mind.
Last edited by wrd1972; May 5, 2009 at 01:49 PM.