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How wide is the chamber on small bore AFR 225 heads??

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Old 07-15-2009, 04:17 PM
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Default How wide is the chamber on small bore AFR 225 heads??
I am running a 3.898 bore LS1. The #1630 small bore heads measure about 4.1" across the chamber. Does this seem correct??? Seams big to me for a small bore head.

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Old 07-16-2009, 01:28 AM
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Anyone???

It seems that somehow my "small bore" AFR heads are a big bore setup?? I mean I would think the chamber chould be no wider then 3.9"-4.0" range, not 4.1 ish...

I need to find out so I know if I will be selling them or not...
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Old 07-16-2009, 10:13 AM
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According to AFR's website the part number that you referenced (1630) is the big bore head. The small bore head is 1660.
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