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JE Pistons Tour Series Gas Ported Pistons
Pistons, 23 Degree GP, Forged, Flat Top, 2-Valve Reliefs, 4.030 in. Bore, 3.500 in. Stroke, 5.700 in. Rod, 1.550 in. Compression, Chevy, Set of 8
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Estimated Ship Date: Nov 18, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
170689
Part Type:
Product Line:
Summit Racing Part Number:
JEP-170689
UPC:
193564034748
Piston Rings Included:
No
Bore (in.):
4.030 in.
Bore (mm):
102.362mm
Stroke:
3.500 in.
Rod Length:
5.700 in.
Piston Style:
Flat top, with two valve reliefs
Piston Material:
Forged aluminum
Compression Height (in.):
1.550 in.
Piston Head Volume (cc):
+5.00cc
Wrist Pin Style:
Press-fit or floating
Wrist Pin Retainers Included:
Yes
Wrist Pin Included:
Yes
Pin Diameter (in.):
0.927 in.
Piston Ring Thickness:
0.043 in. x 0.043 in. x 3.00mm
File Fit:
No
Gapless:
No
Remanufactured:
No
Quantity:
Sold individually.
Notes:
0.290 inch deep intake pocket.
JE Pistons Tour Series Gas Ported Pistons
JE Pistons Tour series gas ported pistons have undergone engineering changes to handle higher horsepower 4-barrel applications (approximately 650 hp) and angle-milled heads. Both the 350 and 400 Series accept oversize valves (the intake pocket is 2.255 in. and the exhaust pocket is 1.870 in.) and long-duration, tight lobe separation cams. Ring grooves are precision-machined for .043, .043, 3.0mm backcut rings with lateral gas ports for a superior ring seal.
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Instructions & Calculators
Some parts are not legal for use in California or other states with similar laws / regulations
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