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05-30-2004, 10:38 PM
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#1 |
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yeller
Join Date: Oct 2001
Location: Twin Cities
Posts: 13,824
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400 Id
I know it has been discussed before, but how can you ID a 400 from the outside? Arent there external weights on the flexplate or balancer? Something about the number of freeze plugs?
Thanks.
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Jeff 73-87.com 73-87.com Facebook page 73-87 cab corner 6x9 speaker brackets for sale 67-72 cab corner speaker brackets for sale 47-54 cab corner speaker brackets for sale |
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05-30-2004, 11:06 PM
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#2 |
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Account Suspended
Join Date: Dec 2003
Location: Texas
Posts: 2,686
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three freeze plugs instead of two . and a differnt balancer
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05-31-2004, 12:57 AM
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#3 |
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Genuine Chevrolet
Join Date: Feb 2003
Location: South West Pennsylvania.
Posts: 582
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I'll go along with the external balancing on the flex plate but, my 77 Blazer Chalet has the original 400 and has only two freeze plugs.
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George 82 Silverado LWB 4x4 350 SM465 NP208 77 Chevrolet Blazer Chalet 400 TH350 NP203 |
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05-31-2004, 01:37 AM
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#4 |
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california fill
Join Date: Apr 2004
Location: Sunny So-Cal
Posts: 694
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the freeze plug thing isnt 100% accurate all the time, but its been a while since I figured out the discrepency, so use caution...
but the balancer and flexplate are both weighted and are dead give away's... A chevy by the numbers sort of book (or a printout from mortec.com) would be an excellent identification tool also. If the heads are off, look for the siamesed cylinders with the steam holes between bores.. pc |
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05-31-2004, 03:22 AM
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#5 |
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Registered User
Join Date: Jan 2002
Location: Houston, TX
Posts: 2,144
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if its a small block with 3 freeze plugs each side of the block then it is definatly a 400. however, just because it only has 2 dosen't mean its not a 400, because there were some.
on the balancer, it is actualy a blancer, not a damper, so there is a section cut out of the outer diameter of the balancer to keep the assembly in balance. and there is a counter weight on the flexplate as well. then there is always the casting numbers that you can look up
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