1976 Other Dodge Models Dodge 440 Magnum

Tiny
LLUCKTHREE9
  • MEMBER
  • 1976 DODGE
  • V8
  • 2WD
  • AUTOMATIC
  • 42,000 MILES
Answer this before 10 am in morning I will donate, for sure $5.00 for sure mabie more, the engine in motor home its runs good no smoke what would the compression have be on all 8 cylinders to know that the 440 magnum is in good shape, serious need know before 10am tommorow thanks a lot Richard is a 1976 winnebago with 42,000 just as good as a new one iam not sure. Your advise would be greatley appreciate before I donate more than $5.00becasue I want to buy very bad but can't afford to lose.
Wednesday, March 4th, 2009 AT 1:42 AM

3 Replies

Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
Minumum is 132psi to 145psi. Key is not to have one or more cylinders 20% above or below the rest.
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Wednesday, March 4th, 2009 AT 7:34 AM
Tiny
LLUCKTHREE9
  • MEMBER
  • 15 POSTS
This not quote question this 440 doge with 42k has been setting for long time. If runs good and compression tests ok can I expect the engine to last long time or it not good buy same for transmission, some one said things start going bad after set long time. True lase go both ways, thanks for first answer great job
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Wednesday, March 4th, 2009 AT 8:36 AM
Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
There are many varabiles regarding engine life. SInce the engine has been setting a long time, that is an issue. If it has been sitting outside in the elements, that is one consideration (let's call it it strike one).

You would want to change oil and prime the engine with oil through the oil pump, get the oil pressure up to 40psi.

If engine rotates freely and starts does it have good oil pressure? Above 25psi at idle and above 50psi at 3000rpm?

If oil pressure is low at idle and above 3000rpm, then you may have an oil pump, or main bearing/camshaft bearing issue.

If all is good, compression, oil pressure, then it is reasonable to assume it will last a long time if properly maintained.
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Thursday, March 5th, 2009 AT 7:04 AM

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