From the discussions we have had with the editors, we understand that these mods are to be done to a Hemi truck and the data will be in rear wheel numbers.

 

So your ported heads have not been tested in house?, you built a set and shipped them out along with a cam?There was another fella on the hemi forum that paid to have a shop remove the heads and port them,the ported came out will major improvement on the flow bench,on the chassi dyno it didnt pick up but little and lost some in other places and was running lean.Slight gain at the track.They did not do a cam which was a mistake.Lack of tuning ability is the problem.All i am saying is the rags can sugar coat things,in other words I wouldnt go buy a PKG. based on the what somebody got paid to write. I would have to have contact with someone that had sucsess with there own project,all the power expectations where met and the drivebility is like stock,I guess some people dont mind driving around with the check engine light on ,or it surges or dies hot or cold or wont idle without two stepping it.IMHO if the driveability isnt 99% perfect then its not worth doing.

 

Gonzo, you are exactly right in your posting. There is two of us from the dodge crowd with head work that I know of, thats me and a guy named Rampant out of the Va. Beach area. Both done by seperate shops. I went with what you would call a stage 1 port/polish combination. Rampant went with a stage 3, maxxed out on everything and a valve job. I have had no issues at all since mine were done, its not running lean and not throwing any codes. Rampant on the other hand, ran into the lean issues and had a SMT 6 installed from perfect power. His HP remained close to the same, but it tunned it alot safer. His A/F was close to 15 in some RPM levels, and now is safe at around 13. However, he has ran into a few issues with his installer of the SMT 6 and I think if someone else was to get it, tune it right, it would do some improvements on it. The only thing I have done to my truck is the heads, exhaust, and a few mods to the factory intake. I just barely out run him at 14.6 to his 14.7s (he is a QCSB and I am a RCSB). But to tell ya the truth, we have both kinda given in on the trucks and are at the point where we have other vehicles we are building and as long as the damn things are running we are happy, you know how it goes when you get a new toy in the family. Rampant has an old charger and a 340 demon he is building and I am still at it on the shelby cars. To this day, the only thing that we see as a good improvement on the hemi, and not getting to an issue where its throwing codes and not driveable is a 100-125 shot of NOS. Cheap easy mod and the HEMI seems to love the gas, hell its the only thing working thats not causing dilemas. The turbo and the superchargers are both having issues and we only know its a matter of time on the factory parts before it goes, hell the weak link on the HEMI is the valve assembly itself, so no way I'd run alot of big boost on them. Some of the guys are working on their kits (both GSM and STS) and are getting good results, but have spent an arm and a leg to get it working functionally, atleast most of the STS guys had to anyway, the GSM kit had some issues as well, but most of it was due to fuel management, some of the years ran different fuel pumps and had different pressures, so it got worked out for the most part. My theory behind the truck is to be relatively quick as I can without any boost or NOS, this way when I want to go to the track my truck will still be in one piece and if I tear my car up running it, so what..........pull it on the trailer and watch the other runs for the night, and fix it when I can......LMAO!

With the stock runs in my truck which where 15.1 on several occassions, and when I say stock I mean nothing at all done to it, factory everything. Now my runs with the few mods have bought me into the 14.6 range. Now keep in mind, the outside temps were very close and humidity levels were close between the runs on stock vs. modded, so I can say I picked up about a half a second with what I did. Do I feel it was worth it-yes, for the amount of gains I got from it.

 

NOPE, those gains were at the flywheel from comp, not the rear wheels. Rampant and myself have both and were both waiting for cams with our head work, knowing it would be out soon enough and just bring in more power, but we were informed the gains reported is on an engine dyno and not a chassis dyno. So with all the cam trouble, we have decided to wait.............no use to do R and D for comp or KRC unless they want to dish out some bucks for being a test monkey!! LMAO, or free products!

 

Very honest hemi assessment.

 

Any word on this?

 

Yep- I'm running the krc220 cam (comp 273) and had superchips do a custom pcm tune. On a 2nd gear pull, cutout closed, on 22's and after 4.56 gears and high stall tc I gained 54rwhp. Superchip tech guesses cutout open, back on 17's and stock tc and gears (basically a comp dyno to before) we'd see closer to 70rwhp. I'd say it took the cam and tuning pretty good. Unfortunately for everyone else sc is not offering the tune for download right now. Not sure when, they wouldn't say.

The bigger cams can be installed without drivability issues by installing an apexi safc2. Before my truck got to superchips we installed one and it ran fine. Didn't get to dyno it but it was driven.

The latest mods was to require more tuning and sc wasn't able to get my truck in. So I'm having the FAST xfi installed... I should be just fine with everything else it's getting now.

 

Is yours as fast as hemi777 ?

 

Couldn't tell you. Haven't tracked it since I got any true mods.
The only time I ran it on a 1/4 track was the day after I installed my locker and 4:56 gears. Only had a few boltons besides that. I had to baby it out of the hole - very poor 2.45 60' so 14.1 was all I could muster. I do think I trapped 104mph though, I'll have to find the slip. That was in full street trim, 22's and all so I'm sure it wouldve been a little better if I could have hit it hard off the line and had my 17's on. But we'll never know. Now that I have really gotten into the performance side of my build and finally gotten a pair of M&H Racemasters I'm pretty sure I'll be getting much better times... We are actually expecting to be in "unchartered waters" once finished with the first part of the build later this month or first January. I'm scheduled to take her back to Cocoa mid summer for more once more parts are available. That's when we'll get to see what it's really capable of.

 

Colt what have you done to yours, mods? If you Dodge guys ever can get the pcm cracked you will really have something. Looks like there are more aftermarket parts everyday for a Hemi.