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Old 04-05-2006, 06:20 PM   #42
coloradosilver
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Join Date: Jan 2004
Location: Rocky Mountains, Colorado
Posts: 995
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Originally Posted by coombsie66
Originally Posted by RC45
The C5R block is essentially the same base block of aluminium as the LS1/LS2/LS6/LS7 - their are slight internal differences and metalurci chanes.. but essentially the same light weight part.

It should be known that the LSx assembly is lighter than the M3 6-cylinder setup..

nth posted the weights one day if I am not mistaken.
Granted with the cast iron blocked E46, but i do believe the new E90 6's with magnesium alloy blocks are a lot lighter, shame that new M3 engines gunna be a V8 and all
Nevertheless, the LS series of engines is a VERY impressive peice of engineering, and not only with a nice light 'all up weight' due to the lack of cam-train on the top end, the centre of mass is nice and low too.

Also, i'd just like to distinguish that making a pushrod set up as good as these being discussed is NOT easy, and its a testiment to the years spent developing this set up that is pushing very impressive numbers and giving good reliability.

However, the majority of pushrod designs in the mass market belong in tractors
Lamborghini started as a tracker too...can't be all bad than.
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