20-YEAR ITCH

Street Machine - - Legend -

FORM and func­tion spring to mind when you eye­ball Jeff’s lat­est work (above). Not only will this 365ci Holden V8 pump out around 700 nat­u­rally as­pi­rated horses for his HZ ute, but it’s just so beau­ti­ful to look at!

“It’s been a 20-year project.” Jeff ex­plains. “I bought the block off GM as a brand-new stro­ker cast­ing orig­i­nally des­tined for the last of the VT Series I Com­modores, and was go­ing to build it to power an SV5000 drag car project. It was around that time I also bought the Dave Ben­nett –11-cast­ing al­loy heads, which are a pretty rare bit of gear – Per­fec­tune only made 100 pairs. This al­lowed us to fit big­ger valves than their –9 cast­ings and flow around 330cfm.”

The en­gine’s 365 cubes be­gin with a 4.030in bore and 6in Oliver Chevy rods. The fac­tory GM stro­ker cast­ing meant no clear­anc­ing of the block was re­quired to fit a cus­tom knife-edge 3.580in Chevjour­nal crankshaft from Crankshaft Re­builders, which spins a Camtech solid-roller cam specced with more than 0.700in lift. That’s sure to make best use of the bou­tique cylin­der heads’ breath­ing ca­pa­bil­i­ties.

An 11.5:1 com­pres­sion ra­tio and a diet of E85 will fuel the fire, with the short mo­tor rounded out by a Com­modore Cup-spec ASR sump. The good oil will be cir­cu­lated by a Peter­son belt-driven pump – one of the only non-lo­cal prod­ucts on Jeff’s en­gine.

That drool­wor­thy in­take is a cus­tom piece from Bliss Cus­tom Ma­chin­ing, one of a num­ber of lo­cal sup­pli­ers that have had a hand in this build. “I’ve tried to use as many Aus­tralian en­gi­neer­ing com­pa­nies as pos­si­ble and have to thank An­drew at Bliss, Steve Jack at Jack Bros, John Noo­nan from NRE and Gonzo from Gonzo’s Rac­ing Pipes,” Jeff says.

“It’s been quite a few years in the build but it’s get­ting close to dyno time now, so we’ll see how it goes,” he con­tin­ues. “I’m not look­ing to break na­tional records or the like; this project has just been about hav­ing some fun for my­self.”

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