V6 Alloytec Intake Manifold for Holden. 11% More Power, Bolt-On Performance.
As the original manufacturer of the CPR6 intake manifold, Performance Manifolds delivers dyno-tested, bolt-on horsepower gains for Holden Alloytec V6 engines.
Double the plenum volume of the standard manifold
Open up and say ahhh: The standard manifold (left) and the easy-breathing CPR6 Manifold.
You can add 20rwhp to your Alloytec V6 in a couple of hours in your back shed. On a standard engine in the family VE sedan, the modified manifold returns 8.6l/100km, which helps the family budget.
Proven results include 330 rwhp from a standard 3.6L V6, showcasing our bolt-on products’ effectiveness.
Watch the 444bhp engine on the dyno
Dyno-Proven Results: 444hp from a Naturally Aspirated Alloytec
Yes, that’s right, 444 horses from a naturally-aspirated V6 Alloytec engine. Tuned by the renowned Phil Laird at the engine dyno at KV’s Fabrication in Maroochydore. Note that the figures on the screen are the uncorrected figures, so we’ve also included the corrected figures in chart form below. We’re confident we can get 500 hp in the near future out of these engines, so if you’re keen to know more, get in touch.
The video below was taken in 2008, with the engine that you see on the engine dyno, the same one that is in the Performance Manifolds ute seen at the start of the video. We are now pulling 444 hp.
If the video stutters, simply press pause, wait for a bit to download and then start playing again.
The CPR6 intake manifold consistently adds 11%+ more power to Alloytec V6 engines
From 261hp to 444hp with bolt-on components
The V6 Alloytec CPR6 Inlet Manifold produced by Performance Manifolds puts on an 11% horsepower increase on a standard engine and standard exhaust system, and up to 60% power increase on a highly modified cylinder head, cam & exhaust system combination.
That’s 444hp, up from 261hp = 183hp of bolt-on power parts screwed onto a standard V6 alloytec small block … if you’re still not impressed, that’s at 8750rpm.
Figure 1: CPR6 Manifold Matches Theoretical Max Flow in Alloytec V6
This flow chart from Chestertons shows how the CPR6 manifold achieves near-theoretical maximum intake flow, surpassing the standard V6 manifold by a wide margin.
Figure 2: Gain 20–25 HP at the Wheels with a CPR6 on a Standard Engine
Add 20 hp at 6000 rpm to a standard Alloytec V6 Commodore, or 25 hp at 6500 rpm on an SV6, just by installing the CPR6 intake manifold. Two hours, four spanners, and you’re done.
Figure 3: CPR6 Powers Modified V6 Alloytec Beyond Stock Limits
This dyno graph compares a modified Alloytec V6 (blue) with stock internals and cams against a factory-standard redline engine (red). Results show significant gains with CPR6 enhancements.
Figure 4: CPR6 Adds 45 HP Even on a Fully Tuned V6 Alloytec
Despite camshaft upgrades and tuning, the redline engine still lagged 45 hp behind—until the CPR6 intake manifold was fitted. The blue line shows the dramatic improvement.
Engineered for Elite V6 Performance
Each CPR6 intake manifold is precision-engineered in Australia by Performance Manifolds, the original manufacturer and innovator.
