350 HP info

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Old Mar 5, 2008 | 02:03 PM
  #1  
74 Omega's Avatar
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From: New Hampshire
350 HP info

Does any one out there have an idea on the HP rating of this motor or what it was in?
Engine #39558-2,intake#404520,#6 heads
it is a 1970 motor
The guy does not know the car it came from

Thanks
Dave
Old Mar 5, 2008 | 07:36 PM
  #2  
Redog's Avatar
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250?

I think the 6 heads are rare. only sold in Canada
Old Mar 6, 2008 | 01:39 AM
  #3  
78cutlass's Avatar
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From: Florida
Talking Olds 350 Motor Info

The casting numbers on the block/heads indicate that's a '70 Olds 350 engine - nice canidate for a build-up. If you decide to sell it, let me know.
Old Mar 6, 2008 | 06:18 AM
  #4  
joe_padavano's Avatar
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From: Northern VA
Originally Posted by Redog
250?

I think the 6 heads are rare. only sold in Canada
The #6 heads were used on EVERY 350 Olds sold in 1970, including the W-31 (with the larger valves installed). Do not confuse these with the 6A heads used in the 1980s.
Old Mar 6, 2008 | 11:11 AM
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if its a 2 barrel its supposedly around 250 if its a 4 barrel it depends
Old Mar 9, 2008 | 06:52 AM
  #6  
74 Omega's Avatar
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From: New Hampshire
Thanks for all the info guys. I appreciate the help. I'm thinking of buying this one to build (or have built for me) and keeping the original in the shed...
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