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#11
02-11-2008, 05:49 PM
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Re: 70 Z28 Engine Block Casting Numbers
Don't smack it with a hammer just yet - try a magnet!
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Marlin 70 Yenko Nova-350/360, 4speed M21, 4.10 Posi (Daddy's Ride) 69 SS Nova-396/375hp, 4speed M20, 3.55 Posi (Benjamin's Ride) 67 RS Camaro-327/250hp, 2speed Glide, & 3.08 Open (Danny's Ride) 
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#12
02-11-2008, 06:33 PM
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Re: 70 Z28 Engine Block Casting Numbers
You don't have to smack it,just tap it firmly.
I actually cracked off an epoxied one that a magnet did stick to. Turns out the forger added fine metal shavings to the epoxy.
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#13
02-11-2008, 09:18 PM
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Re: 70 Z28 Engine Block Casting Numbers
 Was probably easier to find the correct block vs. going through all the 'casting' work!
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Marlin 70 Yenko Nova-350/360, 4speed M21, 4.10 Posi (Daddy's Ride) 69 SS Nova-396/375hp, 4speed M20, 3.55 Posi (Benjamin's Ride) 67 RS Camaro-327/250hp, 2speed Glide, & 3.08 Open (Danny's Ride)
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#14
02-11-2008, 09:26 PM
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Re: 70 Z28 Engine Block Casting Numbers
As I recall the 3970010 casting # was used for a large variety of applications and years. Someone will need to check this but I think that casting # applied to 2 and 4 bolt mains and ranged from the late 60's thru the late 70's.
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Carl 
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#15
02-11-2008, 10:03 PM
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Re: 70 Z28 Engine Block Casting Numbers
Rick,
Not the best photo but here is what mine looks like. 
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Rick Nelson Musclecar Restoration and Design, Inc (retired) www.musclecarrestorationanddesign.com https://www.youtube.com/watch?v=62r-6vgk2_8 specialized in (only real) LS6 Chevelle restorations
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#16
02-11-2008, 10:07 PM
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Re: 70 Z28 Engine Block Casting Numbers
The 010 block has many different applications in both 2 & 4 bolt configurations, and are fairly plentiful. I think the block started in '69, might be '68 - but I'm pretty sure it's '69+. The casting numbers are generally pretty straight, not sure I've ever seen them crooked like that.
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Marlin 70 Yenko Nova-350/360, 4speed M21, 4.10 Posi (Daddy's Ride) 69 SS Nova-396/375hp, 4speed M20, 3.55 Posi (Benjamin's Ride) 67 RS Camaro-327/250hp, 2speed Glide, & 3.08 Open (Danny's Ride)
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#17
02-11-2008, 10:38 PM
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Re: 70 Z28 Engine Block Casting Numbers
Rick thanks for posting, Im glad to know someone has a cleaner block than mine!
 
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Carl
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#18
02-12-2008, 04:48 AM
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Re: 70 Z28 Engine Block Casting Numbers
Just took some pics.Don't know were to put the camera card in this old laptop i'm using.Will send them as soon as i get to work in the morning.This is the motor for my 01E 71 Z28 that i just re-freshed.
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#20
02-12-2008, 05:12 PM
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Re: 70 Z28 Engine Block Casting Numbers
WOW!!! Beautiful car!! Go to ebay #190198071217. The casting numbers look the same as in the original post.
Don
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