My 02 Ram ST(workin, truck) Cummins HO 6 speed, 4.10 gears. She really hums at highway speeds over 55. I've been blastin the tunes to drowned out the noise. 6 inches of snow on the hood helps, but it's warming up. Any suggestions?

 

welcome are you talking about whine noise from the tranny or engine noise?

 

The engine. Anything above 2,000 rpms. Would underhood insulation help? My 99 gasser 2500 SLT had it.

 

check this noise reduction also do a search there are plenty of threads on this subject.

b-quiet

advanced thermal products

fat mat

these are a few

 

here is another

sound stop

 

yeah mine roars pretty good above 2000 .......so I always cruise at 2000 but with my 3.55's and 33" tires that's about 70mph

 

Thanks for the information. ATP seems to be the most professional way to go, but I'll have to put in some over time to pay for that kit.(wow) Hearing aids are expensive too! First week member, good web site and alot of info. Thanks again!

 

I think the HO's might be a little louder than the SO's are in the engine compartment. More combustion noise from the higher compression? Could be my imagination too.

Boyd.