YES!

My truck 'only' has 165K miles, and I noticed an APPRECIABLE difference in the way it ran, with JUST the timing chain swap. (I don't think the water pump has the much influence..... ) I went with a .25inch double roller timing set.

 

my younger brother will be starting to mod keggers and throttle bodies, and i wil help him of course cause my cousin got a 01 dakota R/T black extended cab in and will let my bro have it for $3k. Be a great first vehicle so he can run with my indy's. Lucky for him his will much lighter. So for winter break we will be trying out our skills

 

hate to seem like im stealing this guys post but ive had my truck a year and a half no. so plenum and timing chain should be replaced? and yes i like to stomp from a stop to about 60. it it dosent sacrifice much low end then i might consider. what about the m1 dual plane I saw at mopar performance? what else should I look at on this truck then??

 

Check out the plenum, and see if it is indeed blown. Bunch of different ways to check it, from running the test outlined in the TSB (posted in the faq section), to visually inspecting it by removing the throttle body, and peeking around in there with a mirror, and flashlight. If you have a buncha miles on your truck, chances are, it is blown. (unless it was repaired by a previous owner.)

If you have 100K miles, or in that neighborhood, on your truck, replace the water pump, timing chain and gears.... and front crank seal. Not that bad of a job, IF you have a reasonable place to work. (my driveway in sub-freezing temps is NOT a reasonable place..... Didn't get a choice in the matter though. )

I did the kegger mod on my truck in conjunction with the plenum repair. I REALLY REALLY like the way my truck runs now.

 

super easy way to check is lower a magnet inside mainfold if sticks then plenum has not been fixed

 

ok I have already replaced the water pump will I be able to do the timing chain without taking it off again? Where did u buy that double roller?

 

No, the timing chain is behind the water pump.

 

Got mine at advance auto. The timing cover gasket kit comes with a new water pump gasket as well.....

 

hmm, i hear ya. my driveways about -10. dont have a garage uness I use a buddies. ill wait til summer. Seems fine right now. ive got a bunch of plans for this truck, just getting ready to get into a lineman apprenticship soon so my time and money will be more obtainable mid summer after my bit of schooling. Either way sounds like ive got some research to do based on what ill want based on my build, im thinking new entire maniold and gasket. k thanks. ill leave this post to the original guy now.