Found 72 gs 455 block and matching t400

Discussion in 'Lost and Found' started by 70GREENROCKETS, Jan 25, 2018.


    70GREENROCKETS Well-Known Member

    ive had this for years came from western s.d. Block cast number is 1238861. Vin on both is 42z117519 wf on deck 72bs on the trans tag and short ext housing. I don't see bs in my books for t400 code? In a gs? Also have the heads gregg I checked the production numbers of 72 this fits 1 of 1099 gs 455s 1 of 44 gsx s or 1 of 126 verts! Also z is Fremont gregg
    Last edited: Jan 26, 2018

    70GREENROCKETS Well-Known Member

  3. N360LL

    N360LL milehi71Stage1

    BS is a correct code TH400 for a GS455 and possibly a Stage 1 in 1971 (even though the BB and OW are listed as correct). There is a grey area or an odd car that is an exception to the rule. It isn't as common as the BA but it is listed in both the service manual and it the Ron Sessions book on TH400's.

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