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Old 05-24-2008, 12:31 PM
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lsx motor?

Has anybody every used or built one of these motors? Looking at building one using factory LS7 heads since are factory 12 degree heads since can run factory aluminum heads to go to different class so don't have to try and compete with over 500 cube big blocks making over 1000hp. My 23-degree 362 is pretty competitive in 35" class but 40" class I get outrun by these big blocks. I love my sbc for the weight savings. I know the tricks to get more vacuum as will need 14" vacuum at 1000rpm. By the LSX, you can get a great-sized sbc as they will do 4.250 bore and 4.5 stroke by the factory 12-degree head will flow very close if not better than the aftermarket bbc heads 23-degree heads as GM makes a single-plane carb intake as front cover allowing the use of a Ford distributor. Don't find much for high-domed pistons or high-lift camshafts for the newer motors unless someone knows of somebody doing this.
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