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Thread: engine blocks differences
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10-24-2009 #1
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engine blocks differences
hi,does anybody know the differences beetween a regular 350 block, and a goodwrench block?
thanks, am a little confused
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10-24-2009 #2
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not sure, but i don't think there is a difference. the goodwrench block may have better metallurgy as it's newer but the design shouldn't have changed.
work in progress--for the next 10 years.
1987 monte carlo ss 383ci, 9.7:1, xe274 cam, vortec heads, 200r4, 3.73 posi.
10-25-2009 #3
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It's important to know the year of the "regular" 350 block, as the rear main seal designs changed, the provisions for roller lifters, etc.
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10-25-2009 #4
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Alot, well most Goodwrench blocks will present with made in mexico or hecho en mexico,
check this web site out, they list most if not all GM casting numbers:
http://www.mortec.com/castnum.htm
Personally I will not use them till sonic checked, magnafluxed and hardness tested as most turn up soft.
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