5.7l hemi 11.3:1 6.1l camshaft ported heads, long tubes, need help on tuning

[BG1983]

SO I BOUGHT A 2006 300C ENGINE CAM SWAP DONE WR, ONG. I completely rebuilt the engine new pistons and eagle heads ported the heads
bumped the compression to 11.3:1, has long tube headers and it runs good, but has a stock tune file i know it needs modifing where should i start? just want to make sure its not to rich or lean for break in. all new bearings and rings, etc

[LilSick]

Imo it is already broke in

The system uses narrow band sensors and fuel trims to keep it close to stoich for idle and minimal throttle so you are not going to hurt it

Stock cam and slight compression increase would not require drastic changes even if it didn?t

*If you are going to trial and error the wot tune I would learn how to log and add a wide band first

[BG1983]

if anyone has a tune for similar cam and head swap i would like to use them for compare tothe one ijust wrote before i upload it, just want to be safe. i have tuned 2 other hemis but tey were bolt on mods wasnt as much as i did to mine and tuned off of a dyno tune in my ls build

[PurpleRam]

Stock cam?

[BG1983]

6.1l cam runs good but I just need something to go off of

[PurpleRam]

Search around here for 268h , comp cam 268h there’s been a few threads about that cam. The 268 was based off the 6.1 cam.
Since you’re running Eagles I’d recommend capping max timing to 20* till you get a handle on VE tuning,
What intake manifold?
Also what’s the vehicle?

[PurpleRam]

FWIW , this tune is a work in progress with this current Intake manifold....... that I'm going to start with down tune in mexadelphia tonight, and will work on it as the night goes on
Truck is my daily 04 Ram(GTX) this engine was dropped in last night, it's been a test mule off and on for about 5 year now, long block has 16k miles on it at this point in time.

Spec,349CI (3.937X3.59) 08 block, decked to 9.25, Winberg 3.59in crank, Pankle 6.30 rods, .797Wrist pin 1.88 rod journal.
J&E 1.15 Ph ,14CC dome,
Eagle heads , 2.08X7mm intake ,1.625X7mm Exhaust. heads Milled to yield 62.5 CCs ....Yes the oil slot is removed with the amount taken off the deck surface of the heads.
Static Compression is 12.95 to one.......ON 93OCT IT'S whole life.
Cam is custom grind, @.050 is 232/244 , .520/.533 lift 104LSA no advance ground into cam, Opens @12BTDC and 44 BBDC Closes @ 40ABDC and 18 ATDC.
Current intake is Holley's New single plane with a 95MM TB

I'm running this thing Pig Rich, stoich is .0750(13.33) PE adds .008 @ WOT (12.04AFR) Timing is capped at 20* on both PT and WOT tables, this tune/engine runs best with Table 44390 set 3.83V[ECM] 44390 - Throttle WOT: Above this voltage the throttle is considered at WOT.), above 20* total timing Good fuel is needed .
During the log posted is pulled timing down to 18* at around 4400RPMs, so I'm going to bump it up on the PE table in the 3958-4823RPM area, with the Prefix racing single plane Intake I have to bump it up in the same area, while the Edlebrock needs it bumped up from 2976 to the end of the table..

This Long block in a 3950 lbs 02 Ram with 05 ECU has a PB of 11.22@ 119MPH with a Drag pak intake manifold and RFE545 trans 5.13 gears and 29X10.5 M&H Street tires.

[LilSick]

i love long rod motors

too bad it does not have larger valves : (


*why is the timing all over the place at idle? or is it really? can hpt add actual to the pid?

**notice a significant amount lag in your logs. why do you think that is?

***i added the channels you suggested to mine, took it to the track when i wasnt even planning on doing so cuz you asked - did you ever look at that stuff? i never heard back

[rays04gtx]

Lag is do to the amount of Info he records .
That cam turns heads when it's 1st started up. , it's almost impossible to get a cam with 104LSA to idle with the oem ECU, a lot of that jumping around is the cam it's self and Proportional P/N table.

I keep asking about the Valve size also, all I get back is a smile and " it likes what it likes" He runs a 2.125X6mm in the Pre eagle heads on the 362ci and a 2.225X6mm in the AFR heads on the 304 screamer(3.937X3.125, with 6.535 rods) Ric swears there's 25CFM at 600+ lift to be gained by dropping from 8MM to 6mm valve stem, and 30Hp with going to a nail head exhaust valve instead of a tulip face.

[LilSick]

pffft

the bore is damn near 3.950

its not a wedge

how can it only want 520 lift and that small valve?

i am sure he has a flow bench

that just does not sound right

[rays04gtx]

pffft

the bore is damn near 3.950

its not a wedge

how can it only want 520 lift and that small valve?

i am sure he has a flow bench

that just does not sound right

I think it's more of .520 lift limiting it to a 2.08 valve, I think these heads are 345CFM @ .500 on the 28In bench , the 2.08 is 53% Valve to bore ratio, I know the 2.10-2.125 valve in 345-370ci G3s tend to be lazy under 3500k RPMs with a single plane intake and over 220@50 duration .

, I'm sure if he finds the time there'll be 1/2 page explanation.

[PurpleRam]

pffft

the bore is damn near 3.950

its not a wedge

how can it only want 520 lift and that small valve?

i am sure he has a flow bench

that just does not sound right

The bigger 2.125 heads bleed off too much cylinder pressure and coupled with the weight of this truck and the single plane intake, makes for a slow launch.

Answer to the other question asked by mr spoolboy, who childishly pulled some of his posts…….. the valve to valve clearance on the G3 heads is ample, the valve angles are 18* &14* degree, you have to get over .800 lift before it becomes a thought, 2.225 intake and 1.645 exhaust live happily side by side with lifts in the high.900 with 290/304@ .50 duration in a 4.055 bore in the 9500rpm zone……. Valve to valve is not a worry

[LilSick]

if it were mine i would try:

more lift (lots)

and a larger intake : )

sounds like you mighta already

how heavy?

what converter?

what gear?

how much rollout?

[PurpleRam]

Weight 4950 w/driver.
Stall 4400 advertised, mid 3800 actual
Gear 3.92
Roll out, 92.7, it’s a 29.5 tall tire

The 545 trans has a 1st gear of 3.0, with good gears and bigger cam, it would eat this 545 trans in A week. As it sat last Friday, little old ladies with a walker would give it a run across an intersection.

[LilSick]

dude

buy a tape and start measuring yer rollout

cant go by what mickey says and gotta compare side to side

jack yer diff up or worse

3347r.png

mounted and air'd to 20 psi closer to 100" than 92.7

[rays04gtx]

dude

buy a tape and start measuring yer rollout

cant go by what mickey says and gotta compare side to side

jack yer diff up or worse

3347r.png

mounted and air'd to 20 psi closer to 100" than 92.7

Keep in mind that engine/convertor was in that truck(04 Plum GTX) for just that weekend to street test the Holley intake , it's had the stock original engine/convertor back in it since last Sunday night.