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Old 06-27-2007, 11:40 PM   #1
Shak
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Engine identification help

I just purchased a 1967 C10 long bed in relatively good condition for a 40 year old automobile. I cannot figure out which size L6 engine it is. I am new to this and could use some help. The casting on the block looks like "3877176". I think it is a 292. Can anyone confirm this for me?
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Old 06-28-2007, 12:19 AM   #2
kwmech
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Re: Engine identification help

can you post a pic of the pass side of the block
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Old 06-28-2007, 03:31 AM   #3
rwgregory
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Re: Engine identification help

If one motor mount is further back than the other it is a 292. If the motor mounts are even across from each other it is a 250. If the lifter side covers are about 6" tall it is a 292. 250 side covers are about 4" tall.
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67 GMC 2500 ,2w/d wide box
305 V-6, 4-speed
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Old 06-28-2007, 05:33 AM   #4
'68OrangeSunshine
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Re: Engine identification help

Check for the dress numbers stamped into the block on a machined pad just aft of the distributor.
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Every 25 years I like to rebuild that 292, whether it needs it or not.
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Old 06-28-2007, 10:13 PM   #5
Shak
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Re: Engine identification help

In that case, I have a 250. Thanks for all the help.
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