6.4 Cam timing

[LilSick]

Everyone here knows the camshaft is the 'brain' of a 4 cycle reciprocating engine so i am sure a bunch of you have locked out the vvt mechanism on these hemi's and have logged the ever so important numbers. Not with scanner... but with pen and paper. Degree wheel and dial indicator. I am looking for 6.4 mds camshaft rate of lift and lobe separation numbers for the cyl number 1. Intake and exhaust. Or any other cyl that does not play into mds. Duration @ .006 .020 .050 .100 .150 .200 .300 .400 would be greatly appreciated.

I have read that the 6.4 has a lobe separation of 114 degree's but that does not fit when comparing the tables in editor. According to the tables it is really 120.5 cam degrees. Can anyone confirm or deny?

Thanks

[Hemituna]

6.4L LSA is 120.5

[LilSick]

Did you centerline a intake and a exhaust while the vvt was at lockpin or how did you determine that?

[rays04gtx]

SRT8 392 camshaft is Part # 05037379BC. NON MDS
215I/221E @ .050" .574"/.551" valve lift 1.6 intake/1.65 E ratio, 121 LSA 108 ICL According to the Blue Print spec....actual is 120.5 with a 24inch wheel,. smaller wheels,(8 or 10in) will show 121.

SRT8 392 MDS 05038419AB Cam
MDS cylinders are @50 215Intake and 215Exhaust for MDS Lobes , Non MDS cylinders are 215I/221E

the MDS cam is odd , because of the split duration between the MDS lobes and Non MDS lobes, if you measure NON-MDS LSA , it'll come up as 120.5, Measure the MDS and you'll get a LSA of 121.

While working at comp cams, we measured a bunch of those cams, early 2011 cams measured 120, later in the production run they measured 120.5 , the 12+ measure 120.5 LSA with a 24 inch wheel.

Lift #s at .200, .300, .400, .500 , I don't remember , I just remember the ramp rate is slower for the MDS lobes. Idea is so that the Lifters can bleed out completely , the early tests before the "split pattern" the MDS lifters would sometimes stay "loaded" and would wipe out the cam lobe as the timing retards (>>>>>HINT>>>>>>HINT) Pre 09 MDS didn't eat lifters and cams...POST VVT ....I'm sure I don't need to tell any one what happens.

[Hemituna]

Did you centerline a intake and a exhaust while the vvt was at lockpin or how did you determine that?

When at lockpin (or fully advanced) , they are 120.5LSA +14 degs advanced so intake is at 106.5 C/L and exhaust is at 134.5 C/L.

That is why at idle when cam is at full adv, scanner will show exhaust C/L at about 134 degs

[LilSick]

Thank you. And holy hell. I have retarded a intake to 108 before, further actually, but that was when i had separate in and ex cams. Have never advanced a ex lobe that far. Not even close. Iirc the wildest set up i ever tried was 113 in 118.5 ex. That was in a short stroke motor that spun over 12k rpm. Completely different application.

Trying to wrap my head around why this cam is ground and installed (ran) where it is? Part of the reason has to be the weight of the car? Right? Super low first and second gear in the zf8 to help with that already, still don't get it. Smog?