Pro Tru Piston Kits - Chevy 23° SB Domed Included: Forged Pistons, Hastings Hi-Tensile Plasma Rings, Chrome Moly Wrist Pins and Spire Loxs  Precision reamed pin fit wrist pin hole. CNC machined symmetrical domes. Pressure fed pin oiling. Oversized, symmetrical radius valve pockets.

Part#	Bore Size	Stroke	Rod Length	Comp Height	Dome Vol.	Comp Ratio w/67cc Head	Comp Ratio w/64cc Head	Price/Set
PT001H3	4.030	3.480	5.700	1.560	+8cc	11.5:1	12.0:1	$555
PT001H4	4.040	3.480	5.700	1.560	+8cc	11.6:1	12.1:1	$555
PT001H6	4.060	3.480	5.700	1.560	+8cc	11.7:1	12.2:1	$555
PT030H3	4.155	3.480	5.700	1.560	+8cc	12.1:1	12.6:1	$555
PT006H3	4.030	3.480	6.000	1.260	+8cc	11.5:1	12.0:1	$555
PT006H4	4.040	3.480	6.000	1.260	+8cc	11.6:1	12.1:1	$555
PT006H6	4.060	3.480	6.000	1.260	+8cc	11.7:1	12.2:1	$555
PT058HS	4.000	3.480	6.000	1.260	+11cc	11.9:1	12.4:1	$555
PT058H3	4.030	3.480	6.000	1.260	+11cc	12.0:1	12.6:1	$555
PT058H4	4.040	3.480	6.000	1.260	+11cc	12.1:1	12.6:1	$555
PT058H6	4.060	3.480	6.000	1.260	+11cc	12.2:1	12.7:1	$555
PT029H3	4.155	3.480	6.000	1.260	+8cc	12.1:1	12.6:1	$555
PT026H3	4.030	3.750	5.700	1.425	+8cc	12.3:1	12.9:1	$555
PT026H6	4.060	3.750	5.700	1.425	+8cc	12.5:1	13.0:1	$555
PT005H3	4.155	3.750	5.700	1.425	+8cc	12.9:1	13.5:1	$555
PT027HS	4.000	3.750	6.000	1.125	+8cc	12.2:1	12.7:1	$559
PT027H3	4.030	3.750	6.000	1.125	+8cc	12.4:1	12.9:1	$559
PT027H4	4.040	3.750	6.000	1.125	+8cc	12.4:1	12.9:1	$559
PT027H6	4.060	3.750	6.000	1.125	+8cc	12.5:1	13.0:1	$559
PT059HS	4.125	3.750	6.000	1.125	+4cc	12.2:1	12.7:1	$559
PT059H3	4.155	3.750	6.000	1.125	+4cc	12.3:1	12.8:1	$559
PT059H4	4.165	3.750	6.000	1.125	+4cc	12.3:1	12.9:1	$559
PT018HS	4.125	3.750	6.000	1.125	+8cc	12.8:1	13.3:1	$559
PT018H3	4.155	3.750	6.000	1.125	+8cc	12.9:1	13.5:1	$559
PT018H4	4.165	3.750	6.000	1.125	+8cc	13.0:1	13.6:1	$559