After getting off the phone tonight with Doc,went and checked the numbers on my aluminum block,they are 55,280,he told me he hasnt heard of one that high,Anyone have a higher number one?curious,if no one has, or heard of a higher one,I might have the latest running driveing one,want to know the highest number anyone has seen.CURIOUS,mark

Yes a friend of mine has one over 55 000 as well, have to get you the exact number.

got a couple of blocks..
one is over 56000 and another is 500 something..

I will check them out and get the exact numbers

The ones I currently have are all in the 45,000 to 49,000 range.
I will post some exact number tonight.
DD

I have # 51,859 from a 1963 dart 270

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'63 Valiant V200 Convertible
225 Aluminum Block

I'll try the pic one more time

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'63 Valiant V200 Convertible
225 Aluminum Block

Will wait a couple weeks before I claim I have the latest numbered aluminum block,ANY proof there is one out there higher than mine?still curious,mark

Pat came pretty close with his number... I would not be surprized to see a higher number unit still in service but we will see.

I checked 3 Alm. blocks I had "handy", the one in my 65 Dart convert is number 33,307

Twiggy is #46,944 and I have a "basket case" block on the engine stand that is #45,505.

I have a few more stuffed into the shed that I need to check now that Guzzi Mark has layed-down the high number challenge.

The bad news, knowing Mark, he will insist that the challenge is for the highest numbered running Aluminum Block SL6... so if I find a higher number block stuffed into my shed, I will have to rebuild the darn thing!
DD

Salvage block 23533, 1962 signet block 51985 ,block out of 63 dart 55289

55,289 for sure?I want a spare high number block,Will pay TOP,TOP dollar for a good block with a higher number than 55,280.mark

Now thatI have your attention,I will pay a grand for a choice aluminum block with main caps,in exellent cond,has to be factory stamped 55,280 or higher.bet a few of you will be checking yours tommorow,Slant six people are so much like my Guzzi customers,I have to pay top dollar to make you look,BUTT I will pay for what I want,Mark......I know Docs going in the shed in the morning cussing me

Damn!!!!!!! Thought I was going to meet the challenge--- 54102 factory stamped in the 62 signet sitting in my back yard now----

do not know if that project will ever take flight,Lawrence

That is the correct # on the block. But at this point I do not know how good the block is. Compression is low (40 to 50 psi) across all cylinders. Also the head on this engine does not have the cast in star between the rocker arm cover and the intake and exhaust mating surface as my 62 has. Not original head?

I had five aluminum blocks when I lived in Denver. Now I'm down to two. One of the ones I kept is a late-production ('63) item. I didn't particularly need to look at their serial numbers before, but now that there's $1K being waved around...

...I find I still don't particularly need to look at their serial numbers.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

The first batch of cylinder heads for the aluminum-block engine had the word "SPECIAL" on the casting ID pad instead of the casting number 2206035 like the regular heads had. The difference was a slightly smaller combustion chamber and some clearance for the pushrods. The second batch had the same mods but a 5-pointed star on the casting ID pad. The final batch looked just like the "regular" head (w/2206035 on the pad) because the two head versions were commonised to just one. This was possible because the aluminum-block head was compatible with the iron engine, but not the other way round.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.