248/272 thats it. Airgap$, cam, big heads$, all the bolt on's, SCT tuned(lots of cash) thats all the little 318 could chug out. Sad day for the little 318. Its a OK tq curve relatively flat but no output. To the op post up a pic of your graph.

 

Yep, thems the breaks.

Takes lots of money to make lots of power.

The stock engine makes 230/300 at the crank when its brand new. 248/272 + 26% is about 312/343, so I gained a goodly about of hp and about 43 ft/lbs. of torque as well. That is the path I choose though. Were I to advance that cam a bit, I'd get more torque at the cost of some hp up top.

Also, I'm looking into a new torque converter that should cut the drive line loss to about 20%, and increase the torque multiplier from the stock 1.9:1 to a possible 2.5:1 with a modified stator. That is the last part I need to really pull this thing all together.

 

Interesting , when will u be doing that aim ?

 

not 100%sure the trrans hasn't already been played with... shift good and hard. Will maybe get to tear into it this winter. well the week ahead I will find another dyno I have poor searching skillz on internet. I did a few different word ways to find a few even closer to me. Will get the make and models of dyno machines to figure out what I am running on. I am a little bit on the offensive taking your belittling of my mopar knowledge they have been my life for ten years now.(since i could drive legally) I have learned from bad mouthing to early in until i get better facts. The place I went there tuning was in question by alot of people. That is not where I am getting my tuning done, but it doesn't mean that there dyno is correct...(yes Hahns5.2 and aimforsquirrels) as soon as you became offensive to me I said, "i can get another one done." ****, you don't think that someone else could take offense a little bit to the way you come off. I have my wrenching in as I work on everything of mine(when time permits). now I have a damn cam position sensor and emissions leak for the check engine light has come on. need a friend to crawl into the engine bay as for I an not the little guy at 6'3".

 

Take off the air filter housing and such, toss a piece of plywood across the engine, and lay on that, makes working on the dist MUCH less unpleasant. (I am 6'2", and have MS, so, anything that makes me more comfy is always a blessing. )

 

You can't use a direct percentage number for drivetrain loss on a dyno... it just doesn't work that way.

What kind of dyno did you use for your initial tests? I didn't catch it in your posts.

 

we've discussed drivetrain loss here ad nasium.. the general consensus is that the figure for these trucks is around 26%.. It seems to hold true, for whatever reason, and is a good number to use as a rule of thumb... I don't think anyone would argue there are differences from rig to rig, machine to machine, and differing environmental conditions.

Aim4 knows his stuff.. arguing is futile, as he will back it up when challenged. As far as the 26%, that is just an educated mean average..

 

 

I'll back up whatever you want to argue about. I own my own awd dynojet.

 

Ok, lets accept that drivetrain loss is a function of RPM. Shall we start expressing it as an algebraic equation that few will understand? Or, as an average percentage, that 99% of folks can get their mind around?