John Kartalamakis mentions in his book that the 635 CSi ecu and AFM work and are plug and play.. well almost ... but these are Motronic and not L Jetronic whereas all GTV6s were L Jetronic so what is he talking about????
I think you should get the correct AFM for the GTV6. You should contact sources in Europe like SAVALI and OKP engineering. There is always some surplus.
With regards to the AFM for the 635 CSI, mentioned by Jim Kartamalakis, I think he mentioned the first model which had L-Jet. in 1980 the model changed to Motronic, so after that would not fit. Look for model E24, engine M90.
As you will have gathered by 3.0 lire engine...the left hand head....drivers side on US cars and passengers on RHD... wasnt done up properly by the machinist. I am now being offered 164 heads....
A small question... will the 164 12 valve heads fit onto the 3.0litre block from a 75/ Milano????? without modifications. Dont want to go through the expense of getting the heads all the way across several ponds to kick myself later
pics of heads... will they fit on the 3.0 block form a milano/75 and what mods if any I will have to make...obviously the distrbutor will have to be blanked off...but other things???
Yes I am quite sure the 164 heads will fit on the 75 3L engine. Have not tried that, however the 164 engine is a development of the 75 engine by turning it 90 degrees to fit a front wheel drive engine. The 164 crank is 4mm Shorter than the 75 engine, but I think that does not bear on the heads. With regards to the distributor connection on the 164; the whole sub unit can be removed and the blanking plate from the 75 engine can be installed at that posistion, no problem.
So I say compare the heads mating surfaces, I think they are the same and then put the 164 head on the 75 Block to see if the holes mate properly with the head studs.
On the other hand I have tried to put a 2,5l GTV6 2,5 head on the 164 3L Block. In that case there was some overly resistance in gliding down the head studs. So that was not a proper fit. A test done just to see if it would fit.
However in the case of 3L 164 heads on the 75 Block I would expect a better result, but you need to see!