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RaceTec AutoTec Forged Pistons
Pistons, AutoTec SBC, 4.035, 3.75, Inverted Dome/Milled Dish 5.7, 0.927, SBC 23°4.000, Sold as a set of 8.
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Estimated Ship Date: May 18, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
1000146
Part Type:
Product Line:
Summit Racing Part Number:
PIS-1000146
Piston Rings Included:
No
Bore (in.):
4.035 in.
Bore (mm):
102.489mm
Stroke:
3.750 in.
Engine Stroke Type:
Stroked
Actual Engine Displacement:
6.3L/384
Rod Length:
5.700 in.
Piston Style:
Dish, with no valve reliefs
Piston Material:
Forged aluminum
Compression Height (in.):
1.425 in.
Piston Head Volume (cc):
+19.20cc
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:
1.50mm x 1.50mm x 3.00mm
File Fit:
No
Gapless:
No
Top Ring Thickness:
1.5mm
Second Ring Thickness:
1.5mm
Oil Ring Thickness:
3.0mm
Remanufactured:
No
Quantity:
Sold as a set of 8.
RaceTec AutoTec Forged Pistons
RaceTec's AutoTec line of forged pistons offers high-quality, precision manufactured options at competitive pricing. The primary material used for AutoTec pistons is 4032 high-silicone aluminum alloy which is extremely durable, has great wear resistance, a low expansion rate, and
is very low in friction.
The most common applications for AutoTec pistons include muscle car restorations, performance street rods, as well as many spec racing classes. They can also withstand mild nitrous kits, small turbos, or superchargers. A large selection of sizes and styles is available. Choose the proper fit for your application build.
Additional features for most pistons in the AutoTec line:
* CNC Precision machined ring grooves
* Top ring land gas distribution groove to enhance performance and improve ring seal
* Wrist pins, pin fitting, wire locks, broached pin oilers, and accumulator groove are included
* Diamond turned skirts
Applications
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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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