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Old Dec 7, 2021 | 03:10 PM
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Question Valve Dimensions
Does anyone know the stock dimensions for Intake and Exhaust valves on an 88 big block 460 with EFI E7TE heads?

Thanks.
 
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Old Dec 8, 2021 | 12:22 AM
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Intake 2.00 inches, I can't find exhaust. They will take larger valves, maybe 2.20 and 1.90? And they must be ported for performance use. They are said to be nearly the worst heads performance wise on a 460, made for low end and not much beyond 3500.

Every number about 460 heads you can think of except exactly what you are looking for.

https://www.429-460.com/t122-cylinde...ed-by-djohagin
 
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Old Dec 8, 2021 | 12:30 PM
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Yeah I have about the same data. Thanks though
 
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Old Dec 9, 2021 | 06:28 AM
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Originally Posted by 85e150
Intake 2.00 inches, I can't find exhaust. They will take larger valves, maybe 2.20 and 1.90? And they must be ported for performance use. They are said to be nearly the worst heads performance wise on a 460, made for low end and not much beyond 3500.

Every number about 460 heads you can think of except exactly what you are looking for.

https://www.429-460.com/t122-cylinde...ed-by-djohagin
1.65 on the exhaust. These heads came with an inconel exhaust valve.
 
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Old Dec 10, 2021 | 01:33 PM
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how about length?
 
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Old Dec 10, 2021 | 01:53 PM
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SBI 01547

4.983 overall length
1.654 head diameter
Inconel material
 
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Old Dec 10, 2021 | 03:52 PM
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Originally Posted by DaveMcLain
SBI 01547

4.983 overall length
1.654 head diameter
Inconel material
How about intake?
 
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Old Dec 10, 2021 | 04:42 PM
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Early '90's EFI 460 engine intake:

SBI 01548S

1.977 head diameter

5.198 overall length.

 
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