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All A-series engines use the same Transmission Bellhousing Pattern. This means any rwd transmission, from B10 to B310, fits any A-series engine.
No other Nissan engine shares this pattern. This means transmissions from Datsun 1600 or any other will not fit an A-series engine.
B110 used a dust cover
B210 used a rear engine plate
Image to scale: 88dpi Top to bottom: 338 mm center hole: 94 mm Blue holes: 8 mm Red holes: 8 mm Green holes: 9 mm Gray holes: 10 mm
L/Z/KA/SR
L-series bells are the same six-cylinder to four-cylinder
L-series will interchange with Z-series, but L has considerably more slant. Best to use the correct one.
KA has no slant
SR will interchange but has some differences
A-series has starter at about 8:00 O'Clock position L-series has starter at about 9:00 O'Clock position
E/GA
E-series and GA-series bell patterns interchange. It is similar to the A-series and will bolt to an A12, but some of the bolts do NOT line up.
CA
CA16 uses a smaller clutch & gearbox. CA18 & CA20 use a factory adapter plate & larger tranmission