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429-460 how to tell them apart

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Post  nuclearcobra November 6th 2010, 7:26 am

I just got a short block from a guy that sold me a 460 a while back and the block was cracked so he made good and gave me another block, i'm wondering if its a 429 or 460 whats the best way to find out ?
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Post  DFI429 November 6th 2010, 10:22 am

nuclearcobra wrote:I just got a short block from a guy that sold me a 460 a while back and the block was cracked so he made good and gave me another block, i'm wondering if its a 429 or 460 whats the best way to find out ?

Via the crank casting #:

Paul Kane wrote:429 = 4U, 4UA or 4UAB

460 = 2Y, 2YA, 2YAB or 2YABC....or 3Y or 3YA

In many cases the block casting numbers aren't any different.
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Post  69F100 November 6th 2010, 10:31 am

blocks will inter change unless it is a d9 block then it is exturnal balanced where the c8,c9,dove,dive are inturnal balanced
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Post  DFI429 November 6th 2010, 10:43 am

69F100 wrote:blocks will inter change unless it is a d9 block then it is exturnal balanced where the c8,c9,dove,dive are inturnal balanced

This might be the case with a "virgin" shortblock...But the best info to put out there is to check the casting numbers on everything!

You never know who stole the virginity... pirat
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Post  69F100 November 6th 2010, 7:30 pm

DFI429 wrote:
69F100 wrote:blocks will inter change unless it is a d9 block then it is exturnal balanced where the c8,c9,dove,dive are inturnal balanced

This might be the case with a "virgin" shortblock...But the best info to put out there is to check the casting numbers on everything!

You never know who stole the virginity... pirat


True
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Post  nuclearcobra November 7th 2010, 12:06 pm

DFI429 wrote:
nuclearcobra wrote:I just got a short block from a guy that sold me a 460 a while back and the block was cracked so he made good and gave me another block, i'm wondering if its a 429 or 460 whats the best way to find out ?

Via the crank casting #:

Paul Kane wrote:429 = 4U, 4UA or 4UAB

460 = 2Y, 2YA, 2YAB or 2YABC....or 3Y or 3YA

In many cases the block casting numbers aren't any different.
Thanks thats what i wanted the crank casting numbers Smile
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Post  Curt November 7th 2010, 1:00 pm

Measure the stroke. Its a dead give away!
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