383 cam degreeing

[MLcuda]

Hello, can you guys help me with the data i need for degreeing a mopar 509  cam.Bought a kit from a garage,no specs.


Here some data from the build.(plan):
68mod 383 block fresh bored (.060)
Stock forged crank
Stock rods
New clevite bearings all over
Forged TRW dome pistons(10.6:1) with 906 heads
Hastings moly rings
Pocket ported 906 heads
Stock rocker arms
Edd  RPM intake
Speed demon vac  850
Mopar purple cam 509 kit


This is my first bulid so i try to keep it on a budget,
I also have a 400 block ,stroker plans. 470???

[Chryco Psycho]

I do not have a cam card handy but I believe the CL is 106 * on the intake lobe

[mopardave]

Direct Connection Mopar Cam Chart
One word of caution relative to degree wheels. The DC degree wheel (P4286552) is a zero-to-180 design, which will yield the numbers listed above. Other manufacturers carry 0-degrees-90-degrees-0-degrees design degree wheels, which will not directly yield the numbers above. For example, the 130 degrees on the DC wheel would be 50 degrees on the other style. The correct answer is obtained by subtracting 50 degrees from 180 degrees for 130 degrees or by subtracting 50 degrees from 90 degrees (answer 40 degrees and adding this to 90 degrees (40 degrees + 90 degrees = 130 degrees). Using the DC degree wheel eliminates a lot of confusion and lessens the possibility of making errors.

Note: Degree Tape P4120993; 'A' offset keys new PN P4286500; B, RB HEMI offset bushing P3690936.

The cam chart that lists the various cams sold by the Direct Connection in the last few years follows. It is based on rocker ratios of LA-1.5, B-RB-1.5, Hemi-1.57I, 1.52E.


Direct Connection Mopar Cam Chart
                        Design      Cam Int.
                        Lift @      Centerline   Valve Lash
Engine   Cam Kit #    Cam I.D.         Duration   Valve      @ Retainer   Intake   Exhaust
---------------------------------------------------------------------------------------------------------------
6 Cyl.   P4120243     D.C. 244-108      244      .436"      102      .010   .020
6 Cyl.   P3690766     SS14-112         268      .450"      108      .016   .020
6 Cyl.   P3690768     ST21-110         286      .520"      108      .016   .020
A Eng.   P3412044     68 340 Man.-114      276/284      .444/.453"   112      Zero
A Eng.   P3690213     Street Hemi GT-112      284      .471/.474"   109      Zero
A Eng.   P3690769     SSH-44-108         292      .510"      110      Zero
A Eng.   P4007619     SSH-25/44         286/292      .485/.510"   108      Zero
A Eng.   P4007275     C. D. Stock "Cheater"   336/348      .462/.473   108      Zero
A Eng.   P4120231     D.C. 284-108      284      .484"      108      Zero
A Eng.   P4120231     D.C. 292-108      292      .509"      108      Zero
A Eng.   P3412016     ST21-108         286      .520"      110      .018   .022
A Eng.   P2836146     STX21-105         306      .560"      105      .028   .032
A Eng.   P4120653     D.C. 284-112      284      .542"      110      .028   .032
A Eng.   P4120655     D.C. 296-110      296      .572"      108      .028   .032
A Eng.   P4120657     D.C. 312-106      312      .606"      104      .028   .032
A Eng.   P4120148     D.C. 320-102      320      .630"      100      .024   .028
A Eng.   P3690795     R280-427-1 10 Crane   *280      .640"      108
A Eng.   P3690589     Magna. Velocity-110   324      .633"      110      .024   .028
A Eng.   P4007278     R-278-284-.413-.427-06   *278/284   .620/.640"   106      .035   .035
           Cam Dyn.
A Eng.   P4007509     R-284,427-05 Cam Dyn.   *284      *284      108      .035   .035
A Eng.   P3690796     R-296-4778-1 10 Crane   *296      .717"      109      .024   .028
B Eng.   P3690214     Street Hemi Gr.-108   284      .471/.474"   106      Zero
B Eng.   P3412073     SSH-25-108.5      286      .485"      108      Zero
B Eng.   P3690812     SSH-44-108         292      .510"      106      Zero
B Eng.   P4007277     C.D. Stock "Cheater"   352/380      .467/.483   108      Zero
B Eng.   P4120235     D.C. 284-108      284      .484"      108      Zero
B Eng.   P4120237     D.C. 292-108      292      .509"      108      Zero
B Eng.   P3690816     Stage 11-115      300/308      .518"      110      .028   .032
B Eng.   P4120659     D.C. 284-112      284      .528"      110      .028   .032
B Eng.   P4120661     D.C. 296-110      296      .557"      108      .028   .032
B Eng.   P4120663     D.C. 312-106      312      .590"      104      .028   .032
B Eng.   P3690159     STX-22         310      .590"      108      .028   .032
B Eng.   P3690588     Mini Express-107      316      .654"      107      .024   .028
B Eng.   P4120042     R280-.4468-08 Crane   *280      .670"      108      .035   .035
B Eng.   P4007279     R286-500-108 Cam Dyn.   *286      .750"      107      .035   .035
Hemi   P3690814     SSH-44-108         292      .510"      106      Zero
Hemi   P4007945     C.D. Stock "Cheater"   342/348      .490/.480"   103      Zero
Hemi   P3412090     STX22-105         310      .590"      104      .028   .032
Hemi   P3571029     725-105         340      .643/.623"   103      .028   .032
Hemi   P3690587     Mini Express-104      324      .684/.663"   103      .024   .028
Hemi   P3690591     R-290-446-104- Crane   *290      .700/.678"   103      .028   .032
Hemi   P4007253     R292-500-106 Cam Dyn.   0292      .785/.760"   103      .032   .032
Hemi   P3690839     R-296-4778-108 Crane   *296      .750/.726"   108      .032   .032
---------------------------------------------------------------------------------------------------------------


CAM CHART UPDATE

                           DESIGN      REC.
                           LIFT @      INSTALLATION   VALVE LASH
ENGINE CAM KIT #   CAM I.D.           DURATION OVERLAP   VALVE       CENTERLINE   INTAKE EXHAUST
---------------------------------------------------------------------------------------------------------------
6 CYL   P4286679   D.C. 268-108         268   52   .460"      104   .016   .020
6 CYL   P4286681   D.C. 276-106         276   64   .490"      102   .016   .020
A Eng.   P4286667   D.C. 248-114         248   20   .410"      112   Zero
A Eng.   P4286669   D.C. 260-113         260   34   .430"      110   Zero
A Eng.   P4286671   D.C. 272-112         272   48   .455      108   Zero
A Eng.   P4286630   D.C. 280-110         280   60   .474"      106   Zero
A Eng.   P4349266   D. C. 324-106         324   -   .620"      104   .028   .032
A Eng.   P4349245   Stock Cheater-360 H.P.-106   -   -   Stock      106   Zero
A Eng.   P4349243   Stock Cheater-340-106      -   -   Stock      104   Zero
A Eng.   P4120975   Super Stock- Roller-360-106   309/316   -   .630/.650"   106   .035   .035
A Eng.   P4120976   Super Stock- Roller-340-106   310/312   -   .620/.638"   104   .035   .035
A Eng.   P4120977   Mod. Prod. Roller-340-109   323/330   -   .690/.630"   107   .035   .035
B Eng.   P4286673   D.C.-248-114         248   20   .410"      112   Zero
B Eng.   P4286675   D.C.-260-113         260   34   .430"      110   Zero
B Eng.   P4286677   D.C.-272-112         272   48   .455"      108   Zero
B Eng.   P4286631   D. C. -280-110         280   60   .474"      106   Zero
B Eng.   P4349268   D.C.-324-106         324   -   .620"      104   .028   .032
   P3690588   Mini-Express-107      316   -   .654"      107   .024   .028
B Eng.   P4349270   D.C.-328-107         328   -   .690"      107   .024   .028
B Eng.   P4349249   Stock Cheater- Hyd.- 108   -   -   Stock      106   Zero
B Eng.   P4349247   Super Stock- Roller- 108   324   -   .750"      106   .035   .035
Hemi   P4349259   278 Hyd.-108         278   -   .495/.480"   104   Zero
Hemi   P4349257   292 Hyd.-108         292   -   .524/.507"   104   Zero
Hemi   P4349251   Stock Cheater- Hyd.- 106   -   -   Stock      104   Zero
Hemi   P4349253   Super Stock-Roller-106      333   -   .785"      104   .032   .032
Hemi   P4349255   Pro Stock-Roller-114      328/344   -   .747/.700"   114   .028   .030

[Chryco Psycho]

the cam is a 110 CL usually installed 4* advanced so 106*

[MLcuda]

Thanks!

C.P.  Do you think 850 Speed Demon is to big?  i also have a Edelbrock 750 available.

And how much stall shall i choose for the converter, Now stock 727 and 3,91 gear
What is stock stall in my 727 trans ?? (383 car)

[MEK-Dangerfield]

Thanks!

C.P.  Do you think 850 sp deemon is to big?  i also have a edelbrock 750 avaible.

And how much stall shall i choose for the converter, Now stock 727 and 3,91 gear
What is stock stall in my 727 trans ?? (383 car)

A Demon wouldn't be your best choice of carb., and I think 850 might be a tad too large.

Your stock stall converter is probably around 1800RPM when it locks. With 3:91 gears in the rear, I can definitely see you need something with a higher stall. As to how high... What is the diameter of your rear tires, and how do you plan to drive the car? You can get away with a lower stall rating if this is just an around town type of car. If you are hitting the track or hiway often, then a larger stall would be in order.

[Chryco Psycho]

the Mopar 509 is a big cam , it will require at least  2500 stall converter , 3000 would be better as long as you have a low enough gear to keep it in the powerband on the highway which the 3.91s will . the 850 demon wil work ok , being vacuum secondary it will not bog the engine down & should be a better choice than the Eddy

[MLcuda]

If i choose to go a step down on the cam, which lunati vodoo cam(or others) do you think fit my bulid?
And what is the best carburetor for me ?

[Chryco Psycho]

Where do you want the powerband with the engine to be RPM wise
 I would be using a 750 Proform carb on a 383 engine
 if you are going to do the 400 build & replace the 383 with it I would spend the $$ once & build a 451 stroker & use an 850 carb