Lyle:
You didn't indicate what year Cortina it is, and whether its a Mark I, Mark
II, and/or a Lotus Cortina.
A MkI Cortina should have a non-crossflow engine, which is not a FF engine.
The FF uses the 1967 (beginning of the MkII) and on configuration with the
cross-flow head. THis engine could use either a downdraft 1 or 2 barrel
carb. The crossflow could use either a downdraft 2 barrel carb, or 2
sidedraft webers on a GT.
A Lotus Cortina uses a Lotus Twin Cam engine. Some Cortina engines have been
rebuilt using a "tall block" from a later Pinto, Fiesta, or other later model
Ford. Technically, these are not correct as the displacement is up,
especially if a "stroker" crank is used. The tall block is the same in all
dimensions, except the height.
Depending on the year of preparation you plan to run, various modifications
are permitted. For example, while a MkI never came with a crossflow, MkI's
raced in 1967 could have upgraded to it when it became available. You'd have
to find some documentation proving this, however.
Regards,
Myles H. Kitchen
1965 Lotus Cortina Mk1 #128
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