Dyno 68 Camaro before ARAO 32v conversion and after on 350 cu in Chevy street race motor.

[medicade]

so do these heads run off the single cam the stock 350 has? just wonderin dont now much about these heads

[russarao1]

@medicade yes they run on the stock or high performance cams. These heads are a bolt on using standard intake manifolds, pistons, cams, headers and have accessory holes drilled in the ends of the heads.

[Wireflight1]

@madtownmadman

--

Actually, the required spring pressures are lower per valve, but about the same from the perspective of the pushrod and tappet (and, by extension -- no pun intended -- the cam lobe and camshaft proper). For equal levels of power, the Arao head requires generally 10-15 degrees less duration (with the attendant reduction in net valve lift), meaning you can actually see a significant reduction in spring pressure at a specific rpm or higher rpm with the same pressure.

[robbedoes1985]

The kit in the video seems a little outdated but it seems to work, why doesn't every US v8 has this? Lighter valves, more airflow..? is someone sitting on a patent or something like that ? This design should be updated to 2011 mixed with direct injection and every street muscle can have 1hp per 10cc!

[JDMGTP]

what other changes were made in regards to power besides the heads? Compression change? cam? intake? etc.

[rubbernutz1]

dam wish i could git my hands on a set of those

[drewnashty]

@rubbernutz1 No kidding i've been dreaming for years ... Twin-Turbo big inch small block with Arao heads ... dream on.

[Samsgarden]

I thought 2V/4V terminology was strictly Ford? as in Venturi and port size.

[madtownmadman]

I'm assuming you recommend, if not require, the use of a roller cam, to handle the added pressure of two extra valves?

[pattyaaron]

amazing, what about for a small block ford like my 5.0 mustang?

[atsidlm]

should have been 32 valves since the 1990 Lotus/mariner designed Zr1 lt5.

Definitly buying heads

[minidragbike]

Real Nice video!