400 engine swap

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Re: 400 engine swap [Re: 3hundred] #3148640 06/04/23 04:39 PM 06/04/23 04:39 PM
Joined: Jan 2004 Posts: 8,337 fredericksburg,va C cudaman1969 OP master
cudaman1969 OP master C Joined: Jan 2004 Posts: 8,337 fredericksburg,va	Originally Posted by 3hundred Originally Posted by cudaman1969 I have a 73 Chrysler that has the 400-auto trans that I’m thinking real serious of swapping both into the 65 Sat. (The 273 is old and tired) my main question Was it an unleaded head engine being a 73? I think so. The heads are #346? They're mostly the same as a 906 head, but with induction hardened exhaust seats. No cats on any US cars until 1975. Haven’t looked at numbers but thinking they might be the same as the 74 440 I have.

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