4.1 turbo build

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    4.1 ArizonaGN built roller short block forged billet

    Hello I have a built 4.1 that I had ordered form Nick at ArizonaGN for a project car..I'm selling the car and this project short block.I had a billet roller cam installed and forged steel crank and custom JE forged 4" pistons..I have a receipt of the build and pics of the pistons and "291" thick...
  2. dank GN

    Block casting number questions

    okay I'm looking into getting this 4.1 out of a 84 regal . i have purchased many blocks in the past from 109s to 290s. Anyway this blocks casting number is 25520044 which I can't seem to find much info on. Has anyone used this block for a turbo build ? How strong are they ? Any info would be...
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