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Old Oct 17, 2004 | 02:24 PM
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From: bassano alberta canada
460 info

just pick up a 460 out of a 77 f250. valve covers say 460 IMCO what does this meen.
what is the stalk hp for this engine?
any help would be much apretated. thanks.
 
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Old Oct 17, 2004 | 05:26 PM
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From: Port Alberni
it may be some sort of marine application
 
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Old Oct 17, 2004 | 09:53 PM
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IMCO, if I remember correctly, meant that the engine used CNG (Compressed Natural Gas).

As to the STOCK horsepower rating, I don't believe it would be any different than any other 460 for that year. I believe it was in the 235HP range, but I don't have a listing of different ratings for different years. Perhaps someone else could chime in here with the published ratings for the '77 model year.
 
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Old Oct 18, 2004 | 12:12 AM
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From: bassano alberta canada
thanks guys. its not marine. and it not cng. so ya got me.
 
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Old Oct 18, 2004 | 09:51 AM
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OK--the IMCO either refers to a Marine engine or to a CNG engine (IMCO is the Stock Exchange symbol for "IMPCO", which does CNG conversions for automotive and other uses).

So, here are the possibilities:

1.) This actually WAS a marine engine at one time, and was transplanted into a truck
2.) The VALVE COVERS were from a marine engine, and were put on this engine
3.) The engine was ORIGINALLY set up for CNG
4.) The VALVE COVERS were from an engine that was set up for CNG

This is, of course, assuming that the "460 IMCO" is embossed into the valve cover; if it's just a sticker, then it could have just been added at any time by anybody who opened the hood, and would mean nothing whatsoever. Other than that, the only choices I can think of are the ones I listed above.
 
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Old Oct 18, 2004 | 09:58 AM
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From: bassano alberta canada
thnks alout for your help. as far as i know it is ariganal for that truck.

if it was marine or cng would it have difrent heads.
or what is the difrence between these and a truck 460.
im pulling the moter and putting it into my 1500lbs mudbogger. so im curious.
yours trully
tim
 
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Old Oct 18, 2004 | 12:04 PM
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the reason that i said it maybe a marine app is i looked up imco engines on the net and marine applications came up sorry if i caused any confusion
 
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Old Oct 18, 2004 | 12:48 PM
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hey thats cool.
is there a difrence in engines?
 
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Old Oct 18, 2004 | 02:27 PM
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From: Port Alberni
if your talking about the marine engines the only real diff i know of is the exhaust manifolds and a spark arrester on top the carb may be ask the sites on the net about anything else but im sure someone on this site knows alot more about this
 
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Old Oct 18, 2004 | 02:43 PM
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From: bassano alberta canada
ok thanks alout.
 
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Old Oct 18, 2004 | 03:02 PM
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From: Port Alberni
just wondering if you know any of the oostlanders in bassano
 
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Old Oct 19, 2004 | 12:01 AM
  #12  
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From: bassano alberta canada
yep that i do.

i take it your an albertan.
lol
 
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Old Oct 19, 2004 | 12:30 PM
  #13  
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From: Port Alberni
transplant

i use to be now its vancouver island say hi to steve from john in port alberni
 
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Old Oct 19, 2004 | 02:07 PM
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i will do that.
 
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Old Apr 1, 2021 | 04:45 PM
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Engine family:300IMCO"

Originally Posted by Stonecoldtx
OK--the IMCO either refers to a Marine engine or to a CNG engine (IMCO is the Stock Exchange symbol for "IMPCO", which does CNG conversions for automotive and other uses).


So, here are the possibilities:


1.) This actually WAS a marine engine at one time, and was transplanted into a truck

2.) The VALVE COVERS were from a marine engine, and were put on this engine

3.) The engine was ORIGINALLY set up for CNG

4.) The VALVE COVERS were from an engine that was set up for CNG


This is, of course, assuming that the "460 IMCO" is embossed into the valve cover; if it's just a sticker, then it could have just been added at any time by anybody who opened the hood, and would mean nothing whatsoever. Other than that, the only choices I can think of are the ones I listed above.
IMCO (Im)poved (co)mbustion exhaust emission control) imco system feature a specially calibrated carburetor and distributor. The carburetor provides cleaner air fuel mixture . Starting in 1968 Ford cars and trucks you will find this on exhaust emission decal.My emissions sticker is on the valve cover it will tell you what emissions system your car has it will tell you if your car came with an EGR or no EGR
 
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