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12559853, 12561706, 12572035, 12572317, 241, 243, 53l, 806, 853, castings, gm, head, heads, ls1, part, springs, valve

<TECH ONLY> GM Head Casting Info

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Multi-page thread

1 2 3 4)

1FastBrick on 02-07-2009

02-29-2024 10:17 AM
by strutaeng

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39

234,036

INTERNAL ENGINE MODIFICATIONS

12561706, 200, 53, 706, 706s, 862, chevy, engine, gm, heads, install, intake, interchange, l59, lm7, valve

862 vs. 706 heads

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Multi-page thread

1 2 3)

old motorhead on 02-02-2009

06-19-2017 04:15 PM
by John Gravelle

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21

338,244

INTERNAL ENGINE MODIFICATIONS

12561706, 48, 53, 706, 862, aluminum, cast, casting, gmc, head, heads, na, on, ported, vs

706vs. 862 heads?

v8 on 05-14-2006

05-19-2006 07:39 AM
by v8

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18,198

GMT 800 & Older GM General Discussion

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