Over the years Raelene’s street driven Holden HR has seen quite a few different V8 derived engine combinations but none this potent. Her hubby Mark was driving it this time out as the car ran a personal best pass, getting quicker on every run.
The current combo sees a GM 403-cube LS based V8 engine with forged internals boosted by a Borg Warner turbocharger fuelled by E85 ethanol. The car still retains the factory style column transmission shifter and stock style rear leaf sprung suspension.
The guys are hoping with a few more tweaks that the old girl can dip into the 8-second zone.
1966 Holden HR
Owner: Raelene Drew
GM LS V8 engine 403ci
LQ9 iron block, Callies crank & rods, CP forged pistons 9.2:1
Small hydraulic roller camshaft
Stock cathedral port heads, Double valve springs
Borg Warner 400SX turbocharger @ 17psi
Custom manifolds, pump E85 fuel, MT X275 radial tyres
Powerglide trans, 4000rpm stall converter
Column shift, 3.25:1 Trutrac diff
Thanks to: Eugene @ Flowcraft, Tony @ TDR , Tim and Adam @ MPW
Heathcote Park Raceway, Australia – June 7th 2015.