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What valves to use in EQ320 BBC heads?

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Old 10-20-2016, 01:10 PM
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Default What valves to use in EQ320 BBC heads?

Hi Everyone, I plan on replacing the heads on my 525SC engines with the EQ 320 heads.
I was wondering what everyone was using for intake and inconel exhaust valves?

Thanks in advanced for your opinions.
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Old 10-20-2016, 02:56 PM
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+100 long. With your bore I wouldn't go any bigger than 2.25 intake. Either Ferrea or REV valves Manley don't flow so well. REV flow the best but Ferrea is a close second. Definitely Inconel exhaust valves.
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Old 10-20-2016, 03:21 PM
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Heads should work out great for you.
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Old 10-20-2016, 04:12 PM
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These are the exhaust valves I put in mine.

http://ferrea.carshopinc.com/product...63828/F1261P-8
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Old 10-20-2016, 04:15 PM
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spec sheet
Attached Files
File Type: pdf
Chevy_Cylinder_Head_EQ-CH454A.pdf (157.3 KB, 406 views)
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Old 10-20-2016, 09:35 PM
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Originally Posted by Baja8808
Hi Everyone, I plan on replacing the heads on my 525SC engines with the EQ 320 heads.
I was wondering what everyone was using for intake and inconel exhaust valves?

Thanks in advanced for your opinions.
Originally Posted by Black Baja
+100 long. With your bore I wouldn't go any bigger than 2.25 intake.
Bore notch the cylinders if you can while the heads are off. I'm partial to my 2.30"

Last edited by Rookie; 10-20-2016 at 09:37 PM.
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Old 10-20-2016, 10:10 PM
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I plan on rebuilding short block to increase compression to 8.5:1. I'll look into bore notching. Thanks.
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Old 10-21-2016, 05:56 PM
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Looking at these heads too. Thanks for the info guys ,,,from what I read abt them is they r the ones that started pro top line heads in the late 90's. I have a pair of those heads on a 489 like the hell out of them
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Old 10-22-2016, 10:29 AM
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Mild, For the intake valve, did you use the F1232P valve.
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