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Old 12-02-2002, 06:50 AM
Bathrone Bathrone is offline
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Join Date: Nov 2002
Location: Canberra, ACT
Cobra Make, Engine: Currently Researching
Posts: 106
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Thanks mate, actually its Adam but at past midnight things get blurry

My current plan is to find a rolled commodore, complete. A freind runs a panel shop and he knows auctions and wrecked cars. He can find me GEN III commys complete that are wrecked, but with no drivetrain damage........Sorta rolled cars and sideswiped accos. Theres lots around, and as the early LS1s are only worth 17500 to 21000 second hand wholesale, these wrecked ones are going for around 5000 $Australian.

I think I can get 350+kws with heads, manifold, PCM edit and cam work. Ill freshen up / blueprint the bottom end with bearings, new COME LS1 rods, piston rings, full balance etcetc. Head work - hollow lightweight valves exhaust sodium filled a la LS6, titanium retainers, double valve springs, lighter roller lifters, hi lift / duration cam, manifold and heat porting. Whack on a bigger MAF sensor and much bigger throttle body and custom exhaust. Change injectors and higher flow fuel pump. Get the LS1 edit right into the ECU for a custom tune. Im keeping very close tabs on all the changes GM have made to GEN III so when I rebuild it I will know all the tricks RE oil consumption and piston slap and the oil starvation hassles.

Those simulations are something arent they With *only* (hahahaha!) the stock LS6 power of 405hp in a 1000kg car..........As you can see with a T56 tremec and good diff ratio your assured under 4seconds 0-100 and quarters in the 11s.

I ditched the whole LS6 concept. New, in GM performance parts crate, currency conversion worked out at $AUS12500, and that wanst with engine ancilliaries, without ECU, without harness and did not include shipping to Australia from the USA............Ive also given up on a crate LS1 as I was qouted $AUS9500 for a complete new GEN III LS1. A LS1 which would be an entire mystery as to weather or not it was indeed a MY02 LS1 spec engine.

So, based on the research Ive done and dyno results published, its a no brainer to make 300kw and 350+kws fully streetable on Otpimax is a good goal.

On 350kws, we should see quarters in the 11.5s at a trap speed of about 200klmh. Based on what sketchy frontal area and coefficient of drag figures I could find out about, I think the top speed will be somewhere around 285klmh. Thats with a theoritical diff ratio of 4.5 which is currently my favourite.

I also found out the T56 came with a 0.79 5th and a 0.63 6th, same 2.66 1st and the all rest. This gearing suits me better. Im going to call Tremec to see if I can just swap the gears of 5 and 6 out of the commy box.

Im sure my car will be entirely humbled by Craigs monster! His car will bring a new era to the Australian tradition of mad max, the road warrior! heh
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