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Old 10-03-2013, 04:40 PM
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subzali subzali is offline
Rising Sun Member
Join Date: Aug 2005
Location: Denver CO
Posts: 8,426

Not quite sure, maybe this will help?

"Pre '68 F engines used siamesed exhaust ports and a deep "bathtub" style combustion chamber. They're pretty much on their own so far as interchanging anything.

From then until '72 the F engine used a flattop piston and a closed combustion chamber.

'73 and '74 F engines used an open combustion chamber and a very small dome on the piston."
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 intercooled turbo, CDL switch, cup holder, Metric TLC leather, heated seats, JDM switches, PUMA OBA. Warn M12000 waiting for a bumper.
2000 Tundra Limited TRD 2UZ-FE SOLD
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