Engine Work!

Gen 4 bottom end with rods and pistons removed.

 

I finally had time to get the Gen 4 5.3 torn down. I removed the rods and pistons to open up the ring gap. Stock ring gap was anywhere between .015″ to .017″, not exceeding .017″ on any of the cylinders. Only the upper ring gap was modified. It was opened up to .028″ to .030″. This is done so that when cylinder temps rise, and as the upper ring temp rises and the metal swells, the ends of the ring don’t actually touch each other. This causes the piston to bind in the bore and usually results in a busted ring land or worse.  Read more

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New Parts Have Arrived

Most of my valvetrain has arrived from Lil’ John Motorsports. 

  • BTR Stage III Turbo cam 230/235 .609/.610 114+4
  • BTR .660″ Lift Platinum LS Spring Kit; Titanium Ret., .505″ ID .060″ Thick Loc., Brown/Black Seals
  • BTR 7.400″ LONG, 3/8″ DIAMETER, .080″ WALL CHROMOLY ONE PIECE PUSHRODS

This weekend I am going to assemble the heads and open the ring gaps and start assembling the longblock.  Read more

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