4.7 Got Hot

[woody31]

is it worth fixing or get a crate motor?
Not looking to buy a new truck, dont want long term payments.
Jasper crate motor has a 3 yr, 100,000 mile warranty.
parts , labor, new everything including pulling dash to replace heater core is 6850 out the door.
Thoughts please.

 

[JohnnyMac]

Sounds like a reasonable fix to me. The problem with a rebuild is that many of the ancillary parts are reused and something there may have actually caused the heat problem to start with. New is generally better....

 

[woody31]

Sounds like a reasonable fix to me. The problem with a rebuild is that many of the ancillary parts are reused and something there may have actually caused the heat problem to start with. New is generally better....

Its getting new water pump..hoses,,thermostat ect,,ect,,
Crossing my fingers..thanks for the reply.

 

[McBroom]

I say just replace the heads because that’s the main problem with the 4.7 junk motors. I wouldn’t mess with the heater core unless it’s leaking.
There’s nothing wrong with that short block.
Water pump, heads,180 T stat, radiator hoses, heater hoses. That should cover everything that needs replacing to get it back on the road.
And don’t forget to clock the T stat. That’s very important to do.


- The Blue Mule

 

[MADDOG]

Keep it civil, gentlemen.

 

[McBroom]

The 4.7 is known for weak heads. And factory used the wrong temperature Tsats also.
IMHO


- The Blue Mule

 

[woody31]

Keep it civil, gentlemen.

Yes sir

 

[woody31]

The 4.7 is known for weak heads. And factory used the wrong temperature Tsats also.
IMHO


- The Blue Mule

Thanks for your service.

The new motor is here, should be out of the shop in a week or so.

i will update this when it is ready.

 

[fastf]

Jasper is the way to go .

 

[Joeswole]

What’s does clocking the thermo stat mean?


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[HemiLonestar]

What’s does clocking the thermo stat mean?


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A year later lol...thermostat has a bleed hole in it, this HAS to be oriented up or it won't ever bleed air out of the system properly. Overheat a 4.7, only a matter of time before you kiss it good bye.

 

[TheEnder]

The 4.7 is known for weak heads. And factory used the wrong temperature Tsats also.
IMHO


- The Blue Mule

The first generation 4.7s are the ones with all the issues. Those engines were junk, and just worked as boat anchors with a few bits that move (or for the heads, eject). The second gen 4.7s are a completely different story and are INCREDIBLY reliable when they’re taken care of. I can vouch as mine hasn’t had any issues in 461K of driving over 8 years.


Sent from my Blue Onyx RAM 1500

 

[TheEnder]

A year later lol...thermostat has a bleed hole in it, this HAS to be oriented up or it won't ever bleed air out of the system properly. Overheat a 4.7, only a matter of time before you kiss it good bye.

Didn’t even realize this was from September...silly me....


Sent from my Blue Onyx RAM 1500

 

[ST-8]

A year later lol...thermostat has a bleed hole in it, this HAS to be oriented up or it won't ever bleed air out of the system properly. Overheat a 4.7, only a matter of time before you kiss it good bye.

must be from slaying all those hemis.

 

[HemiLonestar]

must be from slaying all those hemis.

Remember that guy from TX with the "police special" 2003 4.7 that mows down hemis with ease? [emoji23][emoji23][emoji23]

Edit: I just realized that's who originally started this thread [emoji23][emoji23][emoji23]
https://www.ramforum.com/threads/dusted-a-hemi.67743/

 

[ST-8]

Remember that guy from TX with the "police special" 2003 4.7 that mows down hemis with ease? [emoji23][emoji23][emoji23]

Edit: I just realized that's who originally started this thread [emoji23][emoji23][emoji23]
https://www.ramforum.com/threads/dusted-a-hemi.67743/

I wasn’t sure if you were playing dumb or legitimately didn’t realize who started the thread.

The ole HEMI slayin 4.7 is no mo. RIP

 

[HemiLonestar]

I wasn’t sure if you were playing dumb or legitimately didn’t realize who started the thread.

The ole HEMI slayin 4.7 is no mo. RIP

Seriously didn't realize who started this, when you click on it it takes you to the latest post lol.