Hypereutectic Piston Question...
#1
Hypereutectic Piston Question...
Everywhere I look I find info that says not to bore/hone the LS1 block more than .010" (.25mm). So why do Keith Black & Sealed Power / Speed-Pro offer hyper pistons up to .040" (1mm) oversize? Is the .010 rule-of-thumb only for nitrous or FI applications? What do you guys think?
#4
KB #3498HC - page 65 from the 2009 catalog - here
Rock Auto has Sealed Power (Speed-Pro) #H868CP for an '02 Camaro - here
Both show .25mm, .50mm, .75mm, & 1mm oversize.
Summit sells both:
http://www.summitracing.com/parts/UEM-3498HC-1-0MM/
http://www.summitracing.com/parts/STL-H868CP75MM/
Rock Auto has Sealed Power (Speed-Pro) #H868CP for an '02 Camaro - here
Both show .25mm, .50mm, .75mm, & 1mm oversize.
Summit sells both:
http://www.summitracing.com/parts/UEM-3498HC-1-0MM/
http://www.summitracing.com/parts/STL-H868CP75MM/
Last edited by hiltsy855; 12-02-2010 at 05:40 AM.
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#8
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You're probably right. I've heard of LS2's going out to 4.030" but I can't imagine that that would be something that would live long with a considerable amount of power. An iron 5.3L block would probably be fine at that bore. The hypereutectic piston would probably have problems before the cylinder would.
#9
Everywhere I look I find info that says not to bore/hone the LS1 block more than .010" (.25mm). So why do Keith Black & Sealed Power / Speed-Pro offer hyper pistons up to .040" (1mm) oversize? Is the .010 rule-of-thumb only for nitrous or FI applications? What do you guys think?
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