LT4 exhaust Valves

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May 1, 2024 | 10:38 AM

#21

bc928

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Burning Brakes

Joined: Mar 2018

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That may mean the LS supercession if lighter is not actually inconel.

Nov 19, 2024 | 08:54 PM

#22

bc928

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Burning Brakes

Joined: Mar 2018

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Quote:

Originally Posted by Katech_Mike

The part number changed which means there was either a revision or the supplier changed. We have not seen any stock of the updated part number yet.

The part number that now represents the l8t inconel valves is 12733470

And they are readily available now. I have to weigh them.

Nov 22, 2024 | 07:56 AM

#23

96GS#007

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Joined: Apr 2000

Posts: 15,344

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From: Texas

Quote:

Originally Posted by bc928

The part number that now represents the l8t inconel valves is 12733470

And they are readily available now. I have to weigh them.

Did you get a chance to weigh them yet?

Last edited by 96GS#007; Nov 22, 2024 at 08:55 AM.

Nov 25, 2024 | 09:44 AM

#24

Katech_Mike

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Joined: Dec 2008

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OEM LT1/LT4 - 74g
OEM L8T Inconel (Old PN:12671857) - 96g
OEM L8T Inconel (New PN:12733470) - 95g
Ferrea Super Alloy - 95g

Nov 25, 2024 | 09:58 AM

#25

96GS#007

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Joined: Apr 2000

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From: Texas

Quote:

Originally Posted by Katech_Mike

OEM LT1/LT4 - 74g
OEM L8T Inconel (Old PN:12671857) - 96g
OEM L8T Inconel (New PN:12733470) - 95g
Ferrea Super Alloy - 95g

Thanks @Katech_Mike !

Btw....Meant to email you...Got the new flywheel and it looks fantastic! Hope to have it installed within a few weeks. Thank you for the awesome service!

Btw#2....If you saw some Johnson lifters go out the door to GSpeed....those are mine as well

Nov 28, 2024 | 12:30 AM

#26

LS6951

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Joined: Aug 2012

Posts: 76

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From: Houston

So,

Never mind. Quick google search confirmed. guess they are the same. Stainless. Only intake valves are different.

To confirm again. Are the LT1 and LT4 exhaust valves the exact same? and they are Stainless.. not inconel?

Last edited by LS6951; Nov 28, 2024 at 12:52 AM.