Thread: D21 head swap
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Old 04-27-2021, 12:20 AM   #1
Join Date: Apr 2021
Location: Washington
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Vehicle: 1991 & 94 d21. 06 titan
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Default D21 head swap

Has any body changed the model of head to the block. I have a 40F block. But I have a 72P head. Will it run? Trying to build a motor up for my 91

Last edited by Rocgarrison; 04-27-2021 at 12:21 AM. Reason: More information
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