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318 and 360 blocks the same?

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Old 09-08-2011, 11:07 PM
travis28716 travis28716 is offline
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Default 318 and 360 blocks the same?

Okay so I'm just wondering are 318 magnum and 360 magnum blocks the same? I want to do a swap and start from scratch at the block and was wondering if they were the same.
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Old 09-08-2011, 11:13 PM
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Nope, not the same. Bore size 318 is 3.91. Bore size 360 is 4.00. Crank is different as well.
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Old 09-08-2011, 11:17 PM
Rob59 Rob59 is offline
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No. The bore and stroke are different for one.

Actually, from an older thread "318 and 360 block are not the same
3.31x3.91 stroke/bore vs 3.58x4.00 stroke/bore.
318 internally balanced, 360 externally balanced.
Max stroke for a 318 is 390ci vs 360 with 426ci. (wont recommend it/408 better choice)
Both motors do share the same tb, intake manifold and heads. " Excerpt from RM_INDY's post.
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Old 09-09-2011, 03:44 AM
97tn4x4 97tn4x4 is offline
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You "could" make a 318 block a 360 but it'd be absolutely pointless.
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Old 09-09-2011, 10:25 AM
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Originally Posted by 97tn4x4 View Post
You "could" make a 318 block a 360 but it'd be absolutely pointless.
That's all according what you want or a certain set of rules you may be building the engine for.
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Old 09-09-2011, 12:20 PM
97tn4x4 97tn4x4 is offline
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It would be cheaper to find a block rather than make one.
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Old 09-13-2011, 02:15 AM
travis28716 travis28716 is offline
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Well I'm having a really hard time finding a 360 block, 318 are easier. Im wanting to build a 408 stroker and was just wondering if I could do this to a 318lot like you would on a 360. I wanna change everything to it. Thanks for the responses also
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Old 09-13-2011, 07:08 AM
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I think the limit for a 318 stroker kit is 390 CID.
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Old 09-13-2011, 08:19 AM
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Quote:
Originally Posted by travis28716 View Post
Well I'm having a really hard time finding a 360 block, 318 are easier. Im wanting to build a 408 stroker and was just wondering if I could do this to a 318lot like you would on a 360. I wanna change everything to it. Thanks for the responses also
That's funny because in the summer of '09 a friend of mine asked me to help him find a set of heads for his '96 318 (cracked) and we went to three different south Georgia pic 'n pulls before we could find a 318. Saw a good dozen 360s first...
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Old 09-13-2011, 09:30 AM
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I don't think a 318 block can take a .090 overbore to get you to 4.000.

Get the correct block, don't mickey mouse something and regret it later.
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Old 09-13-2011, 09:30 AM
 
 
 
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