Hi guys
Here is where my thinking is at the moment.
My car has only done 20,000kms so I'm not in a hurry to change crank, rods, pistons etc.
I like the Harrop 2300 and I would like to keep the setup under 400-500kW (engine), with a view to ramping it up once the engine is older and I would replace internals, gearbox, diff etc.
Is it possible to have the 2300 installed now, with soft tune and then later on wind it up?
Yes, good choice,
if you fit a Harrop 2300 using the biggest top (supercharger) pulley should give you around 430rwkw, (or a bit more if you fit a blower friendly cam,)
you can do other stuff later & spin up the blower for more boost with a smaller top pulley later is you want.![]()
That's my opinion from an LS3 with a 2300 Harrop running around 10psi, I honestly don't think I am being over optimistic.
LS3's are a great motor & the Harrop has a great intercooler manifold system that works very well.
Dan, will you be getting PowerTorque to do the work?
&
Yes.... Valve springs would be a must IMHO.
Have you decided when you are likely to be getting it done?
Might be worth reading the fitting manual, could give you some more understanding of what goes where & how it all works if you have not seen it before.
You will find it on the lower left side of this page in the "Product Downloads" section.
https://www.harrop.com.au/shop/autom...e-vf-commodore
Last edited by whitels1ss; 08-12-2019 at 01:30 PM.
Definitely do valve springs and probably pushrods too, plus I had my crank pinned while it was getting a cam (LS9 cam - complete waste of time and money). Heat is the biggest killer with superchargers so while you are at it definitely add at least thermal blankets - cheap mod while charger being fitted. See https://fiinterchillers.com/thermal-reduction-blanket/ (I have one fitted) and even https://fiinterchillers.com/blower-spacer-plates/ if you can afford it while the charger is being fitted.
My HTV1900 on LS3 makes 390rwkw @ 10 lb boost on APS' very tough dyno. Was 385rwkw before cam but actually lost torque........I know of at least one other dyno it would run close to 440rwkw on.
Mine runs at about 20C above ambient at cruise which isn't too bad.
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