speck1148

Part Number: 809631 Grind Number: HR-230/352-2S-14 IG

Good mid range torque and HP, fair idle, performance usage, best in 400+ cu.in., mild bracket racing, auto trans w/3000+ converter, good w/plate nitrous system, 3600- 4200 cruise RPM, 10.0 to 11.5 compression ratio advised.

Engine Size Configuration 260-455 C.I. V
Valve Setting: Intake - .000 Exhaust - .000 Hot/Cold - HOT
Lift: Intake @Cam 352 @Valve 563
All Lifts are based on zero lash and theoretical rocker arm ratios.
Exhaust @ Cam 372 @Valve 595

Rocker Arm Ratio 1.60

Cam Timing: TAPPET @ .004
Lift: Opens Closes ADV Duration
Intake 33.0 BTDC 79.0 ABDC 292.0 °
Exhaust 87.0 BBDC 37.0 ATDC 304.0 °

Spring Requirements:
Part Number 99893

Loads Closed 130 LBS @ 1.850 or 1 27/32
Open 346 LBS @ 1.280

Recommended RPM range with matching components
Minimum RPM 2200
Maximum RPM 6400
Valve Float 7000

Cam Timing: TAPPET @.050

Lift: Opens Closes Max Lift Duration
Intake 6.0 BTDC 44.0 ABDC 109 230.0
Exhaust 60.0 BBDC 2.0 ATDC 119 242.0

ASKING $225 SHIPPED TO YOUR DOOR STEP. CONTACT ME AT 315-529-1593 OR SPECK1148@OUTLOOK