Originally Posted by psullivan:
This is a real question - not a set up deal.
1) What is the difference in cost between a steel and aluminum block (this has to include (a) the life of the engine and (b) the ability to repair.
2) Is the aluminum block the main "cost center" i.e. - is it "main" item to control in an attempt to control cost in a sprint car series.
Steel block after machining (boring, line boring, decking, etc.) can be had for between $900 (junkyard block) to $3500 (lightened DART block), or more if you want to spend it. The top ASCS guys are not running junk yard blocks. If I had to guess, I'd say that probably less than 30% of all ASCS guys are not running junk yard blocks.
New Brodix aluminum blocks from Competition Products go for around $3400, but I don't know whether that's race ready or not.
Not much you can do if you hurt a steel block, other than sleeving if a cylinder cracks or something. I guess aluminum can be repaired to nearly new, but it may be a lesson in diminishing returns, with a new block cheaper.
So, you see, the block cost isn't really a huge deterrent. It's just that steel is what many of us have, and what the modified guys have, which was a supposed avenue for them to get into sprint car racing.
Tim Simmons