What is a pushrod valve gear
02-12-2004, 03:53 PM
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What is a pushrod valve gear I've built a dozen motors, so my knowledge isn't thin, but what is this pushrod valve gear that the LS1/LS6 has and what is it's purpose?
02-12-2004, 05:15 PM
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Originally Posted by Tin Indian
pushrod valve gear?
No such an animal in the list of parts.
No such an animal in the list of parts.
Sure there is. I think it on the same isle as the chain stretcher.
Sorry man can't say as I heard of those either. Maybe that's what they are calling a camshaft now days.
02-12-2004, 06:31 PM
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Originally Posted by Rocket-Doc
I've built a dozen motors, so my knowledge isn't thin, but what is this pushrod valve gear that the LS1/LS6 has and what is it's purpose?
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02-12-2004, 07:43 PM
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Originally Posted by NataSS Inc
OH I know what that is. Its down isle 2 left hand side right next to the blinker fluid.
JK
I have never heard of anything like that in the LSx related world.
JK
I have never heard of anything like that in the LSx related world.
sorry just had to add in hehehe
02-13-2004, 11:18 AM
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Come on, the guy asked a legitimate question so give a real answer.
A pushrod Valve Gear is a miniature gear inside of each pushrod. I am sure that you have seen a number of post on bending pushrods with missed shifts or mechanical overevs. The aftermarket has addressed this with a new style pushrod. This has a gear actuated valve inside the pushrod to allow for beed down in a situation that would bend a normal pushrod. These are new and somewhat untested to date. I have not purchased them myself as cost is a factor. Also do not know if any sponsors carry them yet.
A pushrod Valve Gear is a miniature gear inside of each pushrod. I am sure that you have seen a number of post on bending pushrods with missed shifts or mechanical overevs. The aftermarket has addressed this with a new style pushrod. This has a gear actuated valve inside the pushrod to allow for beed down in a situation that would bend a normal pushrod. These are new and somewhat untested to date. I have not purchased them myself as cost is a factor. Also do not know if any sponsors carry them yet.
02-13-2004, 03:20 PM
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Do all you comedians remember that "gear" is a word with multiple meanings?
I found the likely source of Rocket-Doc's confusion on the Idaho Corvette Webpage www.idavette.net in a description of the 2001 LS6 engine.
The point is that this engine doesn’t have overhead camshafts. Rather it has “pushrod valve gear”
-Gary
I found the likely source of Rocket-Doc's confusion on the Idaho Corvette Webpage www.idavette.net in a description of the 2001 LS6 engine.
This new Gen III puts out 385hp at 6000 rpm and 385lbs/ft torque at 4800rpm. A dozen years of engine technology advancement gets us 10 horsepower and 15 pounds/feet torque with identical peaks. If that doesn’t seem like much, consider that improvement comes from an engine with: slightly less displacement, smaller physical size, only one cam, only two valves-per-cylinder, pushrod valve gear, less weight and better fuel mileage.
-Gary
Last edited by Gary Z; 02-13-2004 at 03:30 PM.
