Re: Cortina Project: Advice needed:)
i agree the money would be better spent on turbo'ing a 250 x-flow or even better a 4L OHC motor, pref a low k AU (stronger bottom end, metal head gasket.etc)
"Do you think the 250 would make a decent amount of torque?"
that is an understatement!! a turbo 250/ 4L OHC would make bulkloads of torque, more than a barra if tuned and built right.
it would be better starting off with a factory 6cyl, as i think the tranny tunnel may be bigger,slightly diff front susp., i think the steering linkages may have been different to clear the motor, the brakes(although i would assume u would put bigger ones on....) and there were a few other things i cant remember
the diff. is also different i would stick with it. just find a 4-pinion LSD and get a specialist to "tighten" it up. my brother has an 302 xa coupe 250hp at the wheels several burnout comps and 7500 revs, and its still goin strong. but it if u are goin a manual the nine inch may be a better option.
i doubt the hubs from an au would bolt on to a corty, but u never know.