Engine – Block Identification
1975-1980
20R:
- Deck Height 11.280"
(Pan Rail to Top of Deck)
- Deck Height 9.120"
(Crankshaft Center to Top of Deck)
- Stock Bore 88.5MM - 3.484"
- Max Overbore 90MM - 3.544"
1981-1984
22R / RE:
- Deck Height 11.280"
(Pan Rail to Top of Deck)
- Deck Height 9.120"
(Crankshaft Center to Top of Deck)
- Stock Bore 92MM - 3.622"
- Max Overbore 94MM - 3.701"
- Turbo Max Overbore
93MM - 3.661"
1985 - 1995
22R / 22RE
"Laser Block"
- Deck Height 11.090"
(Pan Rail to Top of Deck)
- Deck Height 8.950"
(Crankshaft Center to Top of Deck)
- Stock Bore 92MM - 3.622"
- Max Overbore 94MM - 3.701"
- Turbo Max Overbore
93MM - 3.661"
NOTES:
- Early 81-84 22R - 22RE and Late 85-95 22R / 22RE Engine Blocks: Cylinder Heads DO NOT INTERCHANGE without considerable modifications.
- For increased timing chain durability, ALL 1981 - 1984 should be converted to a double row timing chain, use oil pump drive and 20R - 1981 22R timing component set. For 1985 - 1995 engines, use timing chain conversion kit.
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