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Old 01-17-2024 | 03:41 PM
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Cory H
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Default HP500 Valve Springs
I have a pair of low hour HP500 Carb (Gen 6) that I picked up. I plan to replace springs, retainers and locks before installation. What is the go to replacement kit for these? The Comp 929's that come up on my search threads are no longer available.
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Old 01-17-2024 | 05:03 PM
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GLENAMY 242SS
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call Ron Sporl (Ron Sporl Performance member here on OSO) he will know and most likely have them in stock.
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Old 01-17-2024 | 08:49 PM
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I would prob choose Isky 8005-SP's
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Old 01-17-2024 | 09:33 PM
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Cory H
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Originally Posted by Griff
I would prob choose Isky 8005-SP's
How about locks and retainers
Last edited by Cory H; 01-18-2024 at 07:49 AM.
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Old 01-18-2024 | 03:43 PM
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If they're the same as a 525EFI than Teague stocks OEM replacement PAC springs. They are private label to Teague so you can't buy them anywhere else.
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Old 01-18-2024 | 04:52 PM
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I used the Isky 8005A when I rebuilt a pair of 500 EFI's
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Old 01-18-2024 | 09:31 PM
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Originally Posted by F-2 Speedy
I used the Isky 8005A when I rebuilt a pair of 500 EFI's
Same here
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Old 01-19-2024 | 10:29 AM
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Cory H
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Thanks for the info.
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Old 03-02-2024 | 10:13 PM
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NautiSouth
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There's a calculator on this page that might help:

http://allmondmarine.com/valvetrain-engineering-services/
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Old 04-13-2024 | 02:38 AM
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Originally Posted by NautiSouth
There's a calculator on this page that might help:

http://allmondmarine.com/valvetrain-engineering-services/
Awsome link, thank you!
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