GM 60V6 - Competition Ported 3100 Cylinder Heads

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Competition Ported 3100 Cylinder Heads

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>GM 60V6>Competition Ported 3100 Cylinder Heads

Product Information

Why take a chance on improving performance when you could just as easily hurt your flow, efficiency (mpg), and throttle response from a DIY gasket match job. These street/Strip performance heads are the result from years of R&D on a flowbench to find the best flow while improving velocity at the same time. Velocity + Flow = Performance with excellent drivability on the street. You simply won't find a better set of heads for your street driven 3100 engine at any price, anywhere else.

These heads are setup for performance cams up to .610" lift and moderate lifter acceleration rates. This translates to all but the most aggresive grinds possible, which should have the optional PAC 1518/Valve Spring Pocket work done. Our valve job is more than a bunch of angles. It is the result of the same type of testing that the ports recieved to achieve the best flow. Manley Race Valves are recommended with the PAC 1518 Springs for aggressive cam profiles.

Competition Specs

Best Casting 3100 Cylinder Heads
New Viton valve stem seals
Comp 26986 Valve Springs
Manley Steel Retainers/ Keepers
3500 Valves (1.76"/1.42")
Performance based valve job (Multiple angle/radii)
Milled Flat (.005" unless more is requested)
Break-in lube applied to valvetrain

Upgrade Options

PAC 1518 Springs with matching seat work and seats/retainers
Manley Titanium Retainers
Manley Race Valves

Lift	Stock 3100 Intake	Competition 3100 Intake	Stock 3100 Exhaust	Competition 3100 Exhaust
.050	31.6	33.4	27.1	25.2
.100	55.4	61.1	53.0	51.8
.150	78.1	88.0	78.4	87.6
.200	101.3	115.9	98.4	112.6
.250	125.4	143.6	116.8	131.2
.300	148.1	168.6	133.8	148.1
.350	170	190.9	144.4	158.4
.400	187.8	209.4	151.5	167.1
.450	201.1	223.4	155.1	174.0
.500	210.1	230.2	157.0	178.8
.550	217.1	235.8	158.8	--
.600	218.9	238.9	160.4	--