350 HP info

74 Omega · 03-05-2008, 02:03 PM

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

Redog · 03-05-2008, 07:36 PM

250?

I think the 6 heads are rare. only sold in Canada

78cutlass · 03-06-2008, 01:39 AM

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.

joe_padavano · 03-06-2008, 06:18 AM

Quote:

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.

The_Jeremiah · 03-06-2008, 11:11 AM

if its a 2 barrel its supposedly around 250 if its a 4 barrel it depends

74 Omega · 03-09-2008, 06:52 AM

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...

03-05-2008, 02:03 PM	#1 (permalink)
74 Omega Senior Member Join Date: Sep 2007 Location: New Hampshire Posts: 97	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

03-05-2008, 07:36 PM	#2 (permalink)
Redog Alero Chapter Secretary Join Date: Aug 2006 Location: Newtown, PA Posts: 779	250? I think the 6 heads are rare. only sold in Canada __________________ Me 2000 Alero running 14's 1985 Delta 88 w/1968 350 rocket 2005 Nissan Altima (her's)

03-06-2008, 01:39 AM	#3 (permalink)
78cutlass 78cutlass Join Date: Jan 2008 Location: Florida Posts: 55	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.

03-06-2008, 11:11 AM	#5 (permalink)
The_Jeremiah Senior Member Join Date: Jul 2007 Posts: 248	if its a 2 barrel its supposedly around 250 if its a 4 barrel it depends __________________ 69 Cutlass 4 door. Built 350 inside, grandma's grocery getter outside. Best sleeper in disguise.

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03-09-2008, 06:52 AM	#6 (permalink)
74 Omega Senior Member Join Date: Sep 2007 Location: New Hampshire Posts: 97	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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