COME Racing 600 Series Alloy heads BARE (seats not cut)

OUT OF STOCK

For those wanting to do their own seat and port preparation, our fantastic "600" Series alloy VN Holden V8 heads are available in bare form.

These heads come with our stellite seats installed along with solid bronze valve guides.

Heads are supplied with seats uncut. We recommend seat cutting to suit a 2.08" intake and 1.60" exhaust valve.

Trade customers who specialise in cylinder head preparation will have the best possible platform for making maximum power for their customers with street/strip engines up to 427ci in capacity, with these heads. You only need to outfit the heads with 2.08" intake and 1.60" exhaust valves, steel spring seats, 7/16" screw in studs and guide plates, stem seals and your cam profiles matching spring, retainer valve lock package.

To ensure the ideal compression ratio for your combination your head shop or engine builder can check cc volume of the heads and mill gasket faces as needed. They are delivered with 61-62cc chambers and can safely be flat milled to 50cc's. The heads have very thick deck surfaces.

The flow figures below reflect the minimum flow in cfm @28" test pressure with these "600" Series heads right out of the box...

Flow data in CFM @28" test pressures with the as cast 207cc intake runner volume and 2.08" intake valve
.100"...64.3
.200"..142.7
.300"..206.0
.400"..262.4
.500"..288.5...594hp potential
.600"..304.2...627hp potential
.700"..309.1...637hp potential
.800"..311.2...641hp potential

Exhaust port which flows through a 1.60" valve @28" test pressure...
.100"...52.5
.200"..111.6
.300"..161.1
.400"..184.0
.500"..207.5
.600"..218.1
.700"..223.7
.800"..227.0