Big Block Mopar Roller Camshaft

cutta · 12-16-2015, 01:12 PM

This is a Cam Dynamics camshaft for a Chrysler B/RB, ground on a Crane 8620 steel billet core (that's the 689356 number). Recommended valve lash is .030" at operating temperature. Advertised duration is 318 degrees. Lobe lift is .440", resulting in a gross valve lift of .660" with the standard 1.5:1 ratio rocker arms. The .050" tappet lift duration is actually 278 degrees. Cam timing at .050" is: intake opens 35 BTDC, intake closes 63 ABDC, exhaust opens 67 BBDC, exhaust closes 31 ATDC. Lobe separation is 106 degrees, with 2 degrees of advance ground into the cam. This was a popular single 4bbl Super Stock camshaft. Information confirmed by Crane Cams which bought out Cam Dynamics some years ago.

Cam Dynamics Mechanical Roller Racing Camshaft
It is a Crane 8620 Steel Billet Core
Camshaft Specifications:
Part No: CDR274-06
Core No: 689356
Batch No: 8A2A

Advertised Duration:
318

Duration @ .050
278

Valve lift with 1.5 ratio rocker arms
0.660

Camshaft Lobe lift
0.440

Camshaft Timing @ .050:
Intake Opening: 35 BTDC(Before top dead center)
Intake Closing: 63 ABDC (After bottom dead center)
Exhaust Opening: 67 BBDC (After bottom dead center)
Exhaust Closing: 31 ATDC (After top dead center

Lobe Centerline: 106
2 degees advance ground into camshaft

Valve lash at operating temperature:
Intake: 0.030
Exhaust: 0.030

This is one of our additional racing camshafts and is in good shape. Item is sold as is and priced to move. Please send me a message if you have any questions.
$150 plus shipping for the camshaft.

See ebay add below for pics:

ITEM IS SOLD!

12-16-2015, 01:12 PM	#1
cutta Member Join Date: Jul 2008 Location: Little Rock, AR Posts: 347 Likes: 0 Liked 5 Times in 2 Posts	Big Block Mopar Roller Camshaft This is a Cam Dynamics camshaft for a Chrysler B/RB, ground on a Crane 8620 steel billet core (that's the 689356 number). Recommended valve lash is .030" at operating temperature. Advertised duration is 318 degrees. Lobe lift is .440", resulting in a gross valve lift of .660" with the standard 1.5:1 ratio rocker arms. The .050" tappet lift duration is actually 278 degrees. Cam timing at .050" is: intake opens 35 BTDC, intake closes 63 ABDC, exhaust opens 67 BBDC, exhaust closes 31 ATDC. Lobe separation is 106 degrees, with 2 degrees of advance ground into the cam. This was a popular single 4bbl Super Stock camshaft. Information confirmed by Crane Cams which bought out Cam Dynamics some years ago. Cam Dynamics Mechanical Roller Racing Camshaft It is a Crane 8620 Steel Billet Core Camshaft Specifications: Part No: CDR274-06 Core No: 689356 Batch No: 8A2A Advertised Duration: 318 Duration @ .050 278 Valve lift with 1.5 ratio rocker arms 0.660 Camshaft Lobe lift 0.440 Camshaft Timing @ .050: Intake Opening: 35 BTDC(Before top dead center) Intake Closing: 63 ABDC (After bottom dead center) Exhaust Opening: 67 BBDC (After bottom dead center) Exhaust Closing: 31 ATDC (After top dead center Lobe Centerline: 106 2 degees advance ground into camshaft Valve lash at operating temperature: Intake: 0.030 Exhaust: 0.030 This is one of our additional racing camshafts and is in good shape. Item is sold as is and priced to move. Please send me a message if you have any questions. $150 plus shipping for the camshaft. See ebay add below for pics: ITEM IS SOLD! __________________ Adriel Paradise, Paradise Racing Team Driver/Crew Chief(at least my dad claims me to be) B.S. Mechanical Engineering, University of Arkansas Last edited by cutta; 12-17-2015 at 03:06 PM.