Make:HOLDEN - V8 ROLLER

Model:CS 253308

ROCKER RATIO 1.65:1
Ivan Tighe Engineering Pty Ltd

Tel (07) 3271 6001
Fax (07) 3271 6005

Email: sales@tighecams.com.au 


Profile
Number
Advertised Timings
DURATION
VALVE LIFT
TAPPET
CLEARANCE
REMARKS
Ex Op.
B.B.D.C.
Ex Cl
A.T.D.C
In Op.
B.T.D.C.
In Cl
A.B.D.C
Advertised
@ 0.050"
Gross.
@ T.D.C.
Ex.
In.
972C   55 15 15 55 250 250 202 202 .465" .465"       .016" .014" Torque.
972 79 40 38 71 299 289 232 222 .500" .475"       .018" .016" Mild road.
SESCO 71 34 34 71 285 285 244 244 .541" .540"       .016" .014" Speedway.
612 75 39 34 70 294 284 256 246 .560" .532"       .024" .024" Fast road 3000-7500 rpm.
1099 79 41 44 66 300 290 264 246 .530" .520"       .018" .018' Speedway 4100-8200 rpm.
900C 79 51 51 79 310 310 274 274 .605" .605"       .030" .028" 4500-8500 rpm.
1008B 81 45 45 81 306 306 280 280 .690" .690"       .024" .024" Drag.
1080C 92 56 52 88 320 320 286 286 .591" .591"       .022" .022" Drag/road race.
                                               
                                               

Notes  - 

- Cams available in any lobe format.

- For larger roller cams see Chevrolet section.

- Valve springs are critcal on 308 high lift cams.

- Bronze gears must be used on roller cams.