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Old 10-03-2013, 04:02 PM
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subzali subzali is offline
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Join Date: Aug 2005
Location: Denver CO
Posts: 8,046

From FJ40Jim:
"the 77-80 heads w/ 61031 casting are a slight improvement over 61030, plus it has the extra coolant temp ports cast over (one less crack/leak point)."

They are both open chamber heads so I would say they are interchangeable.
Matt Miller
TLCA# 13684
Rising Sun Bio
1977 FJ40 2F "Brahma" + Lockright, tach, Warn 8274, FJ60 Power Steering, no more Sanden OBA (factory emissions)
1996 FZJ80 1FZ-FE factory lockers + Safari Turbo , CDL switch, cup holder, Metric TLC leather, heated seats and JDM switches
2000 Tundra Limited TRD 2UZ-FE SOLD
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