400 with 350 parts?

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Not-quite-so-new-guy
Feb 13, 2018
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I am thinking of putting a 400 in my car and I some 350 parts will it work with a 400 for instance would head's cams intake and others work of of a 350 to a 400
 

565bbchevy

Geezer
Aug 8, 2011
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Assuming your 350 is a gen 1 and not a later model factory roller block then everything should swap over but most people drill the heads for steam holes when they are going on a siamese cylinder 400 sbc block.
 
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Not-quite-so-new-guy
Feb 13, 2018
43
1
8
Assuming your 350 is a gen 1 and not a later model factory roller block then everything should swap over but most people drill the heads for steam holes when they are going on a siamese cylinder 400 sbc block.
Thx
 

88ss408

Master Mechanic
Feb 25, 2007
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baie st anne n.b
Yeah just don't forget your steam holes and you will be fine.
 
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565bbchevy

Geezer
Aug 8, 2011
9,591
12,612
113
Michigan

565bbchevy

Geezer
Aug 8, 2011
9,591
12,612
113
Michigan
Also the flexplate and balancer can not be swapped over from the 350 to the 400.
 

565bbchevy

Geezer
Aug 8, 2011
9,591
12,612
113
Michigan
For me if I buy a top end kit from trick flow would I have to make the steam holes
You would have to contact them but I would assume they do not come with them but maybe they will drill them for you for a small fee.
 
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