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I assumed my 1975 911S had the original motor in it, but now I'm not so sure. I'm hoping one of the forum guru's can double check this number for me. I have this number stamped on my engine block, 6106197. According to what I've found here on the forum that makes it a 1970 911T motor, I'm I correct. If it is, is this a good thing or bad? As in will it affect the value of the car? I have receipts showing a complete engine rebuild including new Pistons and cylinders. Could it be the shop use an older block and made into a 2.7 liter? This shop is long gone, but I did find mention of it on the forum, so I believed they did quality work.

Any help old be greatly appreciated.

Thanks, Bruce