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11-29-2009, 11:46 PM
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#1 |
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Registered User
Join Date: Nov 2009
Location: Galveston, Texas
Posts: 16
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Olds 350 DX hp
I got this long block engine when I bought my truck. Opened one head to check it out. Ross pistons Pulled the pan. 4 bolt mains I do not recall the conn rods. 455 bb K heads. I have heard this DX block is a 500 to 700 HP capacity. Anybody have any thoughts? or suggestions.
Attached Images Last edited by 72Horn1Ton; 11-29-2009 at 11:52 PM. |
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11-30-2009, 12:16 AM
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#2 |
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Well, Whoop-dee-do!
 
Join Date: Mar 2003
Location: Easton, Mo. pop.- me & scarcely a few others
Posts: 2,302
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Re: Olds 350 DX hp
Don't know alot about them, but have been told they are one of the more durable HP per CI Olds combos. The DX is without argument the strongest OE Olds block. I think a 440ish CI build is common with a steel 425 crank, or a small cube version with a steel 330 crank. What crank is in yours? I thought the later "K" heads were not much good for making power (big CC's). I wonder if the builder was going turbo or nitrous?
Hmm, a friend has several DX engines, I have a 330, 403, 425, 455- maybe I should... 
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'68 GMC shortbox 4x4 350/SM465/T221- bought it in '83 SOLD  '72 K20 500 Cad/TH400/NP205 SOLD '92 Chevy 2500 6.5 mech TD 4L80E crusty daily driver '72 Monte Carlo... sweet low mile toy '11 Dodge Challenger IE 392 6spd... midlife car
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11-30-2009, 12:29 AM
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#3 |
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Well, Whoop-dee-do!
Join Date: Mar 2003
Location: Easton, Mo. pop.- me & scarcely a few others
Posts: 2,302
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Re: Olds 350 DX hp
Guess I was thinking about "J" heads. Here is what I found on the "K" heads.
Marine, irrigation, industrial, W-30/Toro, 442 4-speed replacement head. Most were big valve units.
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'68 GMC shortbox 4x4 350/SM465/T221- bought it in '83 SOLD '72 K20 500 Cad/TH400/NP205 SOLD '92 Chevy 2500 6.5 mech TD 4L80E crusty daily driver '72 Monte Carlo... sweet low mile toy '11 Dodge Challenger IE 392 6spd... midlife car
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11-30-2009, 12:33 AM
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#4 |
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Registered User
Join Date: Nov 2009
Location: Galveston, Texas
Posts: 16
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Re: Olds 350 DX hp
I do not know what crank. K heads are 80cc, unless shaved.
Last edited by 72Horn1Ton; 11-30-2009 at 07:58 PM. |
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11-30-2009, 10:59 AM
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#5 |
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mini truck racer
Join Date: Aug 2006
Location: Baytown , texas
Posts: 3,010
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Re: Olds 350 DX hp
DX is the LF9 deisel block 81-89? i has the bigger lifter bore . I had an 80 Delta 88 5.7 smoker .
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1949 5-window 1969 Camaro 1976 Chevy Luv yellow 1978 Chevy Luv Blue 1976 Chevy Luv Black 1979 Firebird Flooded in Harvey 1999 F350 Dually 2005 GMC Sierra 4.8 RCSB 2014 Explorer (wifes) My build :http://67-72chevytrucks.com/vboard/s...d.php?t=399148 Build #2: http://67-72chevytrucks.com/vboard/s...d.php?t=653583 Last edited by hotrod 80; 11-30-2009 at 11:09 AM. |
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12-01-2009, 07:26 PM
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#6 | |
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mini truck racer
Join Date: Aug 2006
Location: Baytown , texas
Posts: 3,010
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Re: Olds 350 DX hp
Quote:
__________________
1949 5-window 1969 Camaro 1976 Chevy Luv yellow 1978 Chevy Luv Blue 1976 Chevy Luv Black 1979 Firebird Flooded in Harvey 1999 F350 Dually 2005 GMC Sierra 4.8 RCSB 2014 Explorer (wifes) My build :http://67-72chevytrucks.com/vboard/s...d.php?t=399148 Build #2: http://67-72chevytrucks.com/vboard/s...d.php?t=653583 Last edited by hotrod 80; 12-01-2009 at 07:26 PM. |
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12-01-2009, 08:42 PM
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#7 |
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Registered User
Join Date: Nov 2009
Location: Galveston, Texas
Posts: 16
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Re: Olds 350 DX hp
How much more flow than 455 k heads can you get?
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12-08-2009, 01:39 PM
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#8 |
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Registered User
Join Date: Dec 2009
Location: Alabama
Posts: 1
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Re: Olds 350 DX hp
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