Tunnel

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Datsun 1200 originally fitted with automatic transmission has a much larger tunnel. It makes it easier to swap in 5-speeds or larger engines.

Overview

manual transmission

• 67300-H1000 ASS'Y-PANEL, dash, lower [manual transmission]
• 74300-H1010 ASS'Y-FLOOR, front [manual transmission]

automatic transmission

• 67300-H1021 ASS'Y-PANEL, dash, lower [automatic transmission]
• 74306-H1020 ASS'Y-PANEL, A/T floor cover, front [automatic transmission]
• 74300-H1021 ASS'Y-FLOOR, front [automatic transmission]

Manual floor cover (normally not a separate piece) vs auto floor cover
Comparo

Auto Tunnel retrofit - can be welded into manual transmission floor & firewall:

Manual Tunnel is very small to fit the small stock transmissions and increase space inside the passenger compartment:

Photo showing where to cut the tunnel to fit a standard "short" L-series or CA-series transmission.

71-series Modifications

S13 gearbox clearance in manual tunnel

Rear of tunnel modification:

Reverse Lamp

To fit a 60-Series Transmission 5-speed, move the mounts 115mm back:

56A Modification

to clear that nasty clutch fork im the later type 56A trans

See Also

Also see: Transmission tunnel Photo Index