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
---------------------------------------------------------------------------------------------------------------

The first thing to do and the most important item in the valve gear is the cam selection. That is done by the racer for his application. Recommendations are given in other chapters, books and the D.C. catalog.


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