Pontiac Mechanical Roller Camshaft
Out of stock
SKU
60451
Pontiac - 287, 301, 316, 341, 350, 370, 389, 400, 421 & 455
Performance level 5 - Ultra-Action - Radical mid-range cam, shifts at 6500 rpm with a redline of 7000.
INT/EXH - Dur @ .050” Lift: 247°/254° RR: 1.5/1.5 Gross Lift: .582”/.567” LSA: 108° RPM: 4000 to 7000 Redline: 7500
Performance level 5 - Ultra-Action - Radical mid-range cam, shifts at 6500 rpm with a redline of 7000.
INT/EXH - Dur @ .050” Lift: 247°/254° RR: 1.5/1.5 Gross Lift: .582”/.567” LSA: 108° RPM: 4000 to 7000 Redline: 7500
$700.49
Part Number
60451
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
284/294
Duration @ .050" Lift: Intake / Exhaust
247/254
Lobe Lift: Intake / Exhaust
.388/.378
Rocker Ratio: Intake / Exhaust
1.5/1.5
Gross Valve Lift: Intake / Exhaust
.582/.567
CID
389
Performance Level
5
Low RPM
4000
Peak HP
7000
Redline
7500
Performance Description
Radical mid-range cam, shifts at 6500 rpm with a redline of 7000.
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
Radical mid-range cam, shifts at 6500 rpm with a redline of 7000.
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
284R
Recommended Kit #1
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