I am not sure what block they used but the 1200 GT motors had all the other Cooper S stuff like close ratio box, electric fuel pump, etc. so I am just assuming....
There was a change of code in 71 right through the Leyland range. So the change from 9F/XE/Y to 1200 may have just been in line with the change of codes.

I see peterw who joined today says he has an ex-police 1971 clubman GT , might be worth a PM to see what motor etc his has .

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My 1200 (and 1205) block has the pressed steel side plates....

Twas one of the oil leaks I had to fix for rego ..... left hand one with positive crankcase breather "cannister" .... makes it awkward getting the extractors on and off...

The 1200 also has the EN40B crank... and 12805 12G940 head .... but can't guarantee they are originals.... also has a Wade cam - but that is definitely non standard.

How far down the back of the block are these pressed steel cover thing things??

I've had a bit of a look see (albeit in poor light) & a bit of a feel around just below the extractors & inlet manifold & I dont reckon my 1200 block has got these unless they are down really low on the back!!!!

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5/72 Clubman GT - awaiting restoration...... & purchase of the missing parts to do so!!!!

They go almost to top of block, they are just below manifolds. One bolt in middle of each.
If you can't see em, it ain't got em...

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

Not sure where I stand now as I just got off the phone from Minisport in Adelaide (they've done most of the work to my GT for previous owner) & he said the late Clubman GT's with a 1200 engine no didn't have the pressed steel plates down the back of the block!!

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5/72 Clubman GT - awaiting restoration...... & purchase of the missing parts to do so!!!!

Sounds like another one of those production changeover type mysteries perhaps ?

My GT is also a 5/72 build ( car 1224 ) and we have had in our family since about 1985.... and is still the same block in that time (sleeved last rebuild) . Other than ported head, cam and custom dash was pretty standard when we got her... but slowly (?) modifed since.

http://homepages.ihug.co.nz/~gavin.agnew/Ken.html

Only just put the engine back in the car last weekend and everything bolted back on today... otherwise could have done some piccies of the covers for you....

(Thinks ... can still take a photo tomorrow and show the breather... which is easily seen poking up between the carbs and radiator )

Ken.

I can add here, knowing about the Police Packs given by Holden, that most if not all police specials had the engines built to lax tolerances of the piston to bores, in some cases the tolerances were as much as three times the standard build. The idea being that the engine will be more forgiving to being thrashed to within an inch of it's life from cold if there is more room for the sudden heat transfer from combustion - piston - bore.

As for the codes, Police spec engines will always be given thier unique codes so as they can then track these builds.

Timbo

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If in doubt ask