2004 dodge ram 1500 5.7 hemi 4x4…i haven’t done a leak down test, only a compression test….#7 was at like 40% all others were at like 60-65%….when i do the leak down test you are right, it will tell where the issue is…spark plugs looked ok, #7 was shot

 

Something is off here. Not trying to be critical, just want to help you solve the problem.
#7 was shot. Both plugs? What does "shot" mean? Gap covered by oil? Part of plug missing? Why not just replace the plug(s)?
Was there oil in any spark plug tubes? When was last time you replace PCV? Bad PCV can increase oil burning.
40%, 60-65%, do you mean PSI vice percent? At those numbers I doubt the engine would start at all. Perhaps there is a problem with the tool or measuring process.
A couple of cylinders should have decent compression unless there is cracked head, bad head gasket, or some other head problem involving valves or timing.

 

Depends on what you want the end state to be. Any used engine out of a picknpull is only $350 including core. Many thousands for a rebuilt w/ warranty. To fix yours, depending on what you decide to replace and machine work, and who does the actual work.. it could be anywhere from a few hundred to many thousands.

If you have only head issues, and the bottom end is good, that is one set of choices.
If you have bottom end issues, that is a whole other set of choices.

Best to do your inspections to figure out what is bad, and give us the information - along with your end state and budget size desires. We will have no problem filling your head with scenarios of how to address :-)

 

So 2004 5.7 and you have the coil over plugs and the "cross town" wasted spark ignition wiring to the opposite cylinder.
Lower compression in cylinder #7. When you quote a "percentage of compression" what are you comparing that to as 100%?

I am not trying to be a wizeguy here with you, I am just trying to understand, just trying to help...

I'm sure that you know, it could be a worn out engine, blown gasket, cracked head, or perhaps only a stuck valve
(knowing the mileage, usage profile, and maintenance history would be a determining factor in what I would advise)
Hmm, If you are young and mechanically inclined and have never rebuilt an engine before, I would highly recommend it.
Taking one out, taking it apart, having it all inspected, cleaned, and renewed is a great life experience for anyone that has the inclination to do so.
Painting it, choosing parts and 'upgrades' all great lessons to be begun. Then reinstalling it and the pride and care associated with "I did this" ...
I get it, because I did it...

Should you choose this route, it would be great to have you document and show photo's here as you progress. Similar to me rebuilding my own transmission five years and 32,000 miles ago. Great fun, appealed to my meticulous nature, saved a pocket of money.

Now if you just want to build an engine or replace a crate engine, (or short block for that matter), now that can be rewarding too.

 

yes one of the #7 plugs were covered in oil, i found this when i was ganna replace the plugs…and yes those percentages was gathered with a faulty gage “didn’t realize it until i was checking my other vehicle 🤦🏼”….a few other cylinders do have decent compression….after i rechecked the compression with my new tester #7 was still low, the others were around 50-55 percent

 

50-55 percent? What does that mean? Compression is measured in PSI..... if you are only getting 50 PSI, that motor is roached. Or, if you are doing a leakdown test..... 50-55 percent is still WAY out of spec.... (25% max)

Need to clarify what you are talking about here.