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Engine ID

PostPosted: Sat Aug 20, 2022 7:42 pm
by joe7
I was hoping the number gurus could help. So here goes. Its an "L" block,square main caps, push in pick up, sleeved to stock 1500 specs. It was imported to the US circa 1978. The numbers I have are as follows:
Left rear, 701M 605AB
Right motor mount with the "L", on top of the mount closes to the block 122E, right below is B564950
I have seen a lot of Lotus blocks but have never seen any with these numbers. My guess, replacement block?

Re: Engine ID

PostPosted: Sun Aug 21, 2022 9:43 am
by types26/36
I have seen a 701 block that was also marked with 122E which was a replacement block.
The 122E would indicate it was fitted to a 1500 GT Cortina and would have had an original bore size of 81mm (1500) so should not have been sleeved unless it had damage or its been over-bored.
The 701 blocks were bored to 82.55mm when fitted in Lotus Cars (1558 cc)
The other number (B564950) is probably Fords engine number for that GT Cortina. What is the date code on the block?
Here is a pic of the701 block with 122E and also a Ford engine number, this block was on standard 81mm bores, I hope you can make out the 122E as it’s not too clear.

Re: Engine ID

PostPosted: Sun Aug 21, 2022 1:26 pm
by joe7
Thanks for the info.