Pontiac Mechanical Roller Camshaft
Out of stock
SKU
60452
Pontiac - 287, 301, 316, 341, 350, 370, 389, 400, 421 & 455
Performance level 5 - Ultra-Action - Large cid camshaft (455 cid or bigger). Smashing mid-range power hit and top end performer.
INT/EXH - Dur @ .050” Lift: 257°/263° RR: 1.5/1.5 Gross Lift: .649”/.636” LSA: 108° RPM: 4500 to 7250 Redline: 7750
Performance level 5 - Ultra-Action - Large cid camshaft (455 cid or bigger). Smashing mid-range power hit and top end performer.
INT/EXH - Dur @ .050” Lift: 257°/263° RR: 1.5/1.5 Gross Lift: .649”/.636” LSA: 108° RPM: 4500 to 7250 Redline: 7750
$700.49
Part Number
60452
Engine Make
Pontiac
Year
1955-1981
Part Class
Camshaft
Camshaft Name
Ultra-Action
Camshaft Series
Ultra-Action
Engine Type
V8
Engine Size
287, 301, 316, 341, 350, 370, 389, 400, 421 & 455
Product Type
Mechanical Roller
Valve Lash
.026" intake and .028" exhaust
Lobe center
108
Advertised Duration: Intake / Exhaust
294/298
Duration @ .050" Lift: Intake / Exhaust
257/263
Lobe Lift: Intake / Exhaust
.433/.424
Rocker Ratio: Intake / Exhaust
1.5/1.5
Gross Valve Lift: Intake / Exhaust
.649/.636
CID
389
Performance Level
5
Low RPM
4500
Peak HP
7250
Redline
7750
Performance Description
Large cid camshaft (455 cid or bigger). Smashing mid-range power hit and top end performer.
Engine Application
Level 5 camshafts are designed for fully prepared, high compression all-out racing engines and chassis.
Recommended Modifications
Extensive cylinder head modification, bigger titanium valves, lightweight valve train, maximum flow carburetion or fuel injection, racing gas (alcohol or nitro), magneto or electronic ignition, performance rod and crank assembly and increased engine clearances are required for maximum benefit.
CID #2
455
Performance Level 2
5
Performance Description 2
Large cid camshaft (455 cid or bigger). Smashing mid-range power hit and top end performer.
Engine Application 2
Level 5 camshafts are designed for fully prepared, high compression all-out racing engines and chassis.
Recommended Modifications 2
Extensive cylinder head modification, bigger titanium valves, lightweight valve train, maximum flow carburetion or fuel injection, racing gas (alcohol or nitro), magneto or electronic ignition, performance rod and crank assembly and increased engine clearances are required for maximum benefit.
Grind Number
294R
Recommended Kit #1
Call Crower
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