Careless Posted November 22, 2007 Share Posted November 22, 2007 What you're looking for here in the US is a N42 block out of a 1975 280Z. Those had the highest nickel content of any L6 block sold here in the states. my car was built in november of 75, but badged as a 76 and it has an N42/N42 combo. Is that the one you speak of? I might shoehorn it into a Nissan Hardbody Pickup =) Quote Link to comment Share on other sites More sharing options...
NZeder Posted November 22, 2007 Share Posted November 22, 2007 What you're looking for here in the US is a N42 block out of a 1975 280Z. Those had the highest nickel content of any L6 block sold here in the states.and this is how you tell them apart. See the pic attached all other N42's have the 4 bolts holes/casting shape around the oil filter area. Quote Link to comment Share on other sites More sharing options...
1 fast z Posted November 22, 2007 Share Posted November 22, 2007 Im not sure on that fact, as I have MANY 77 280's and 78's ( I would have to check my 79 block) and they do NOT have those 4 bolts around. Ill have to look tomorrow, I could be wrong though. Quote Link to comment Share on other sites More sharing options...
Tony D Posted November 22, 2007 Share Posted November 22, 2007 I can show you four-digit serialized L24 Blocks with the remote oil cooler holes in place and functional... Shocked me when I saw it! Didn't think they had them that early, but the did! Quote Link to comment Share on other sites More sharing options...
Daeron Posted November 22, 2007 Share Posted November 22, 2007 /me does a dance My FAVORITE Z will always be the 1975 280. Except for the bumpers. Quote Link to comment Share on other sites More sharing options...
NZeder Posted November 22, 2007 Share Posted November 22, 2007 Remember that I am outside the USA and like so many other countries we did not get the L28 until the 280zx or 280c/Laurel/Cedrics of the same era ie 79. So this is how I have been told to identify the older L28 blocks which I was told by a contact in Japan who said these are the ones with the higher nickel in them and this is how you tell them apart - if this is incorrect please point me in the right direction but these L28 with no 4 bolts holes are rare here in NZ and I believe also rare in Japan (as stated it took me almost 4 years to find one here in NZ) Quote Link to comment Share on other sites More sharing options...
Tony D Posted November 25, 2007 Share Posted November 25, 2007 As long as you get "N42" castings, I wouldn't worry about 'the best nickel content', what you are going for is the thick walls. Except for the F54 which has marginally less nickel, and therfore more suceptible for wear, any of the "N42" castings will be indestructible with any rings you put in there...except if they are made of Diamonds! Those baby's are HARD! N42=Last forever with no measurable wear! Quote Link to comment Share on other sites More sharing options...
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