4.040'' +.040 357 Pistons SBC 350 SMALL BLOCK CHEVY 23 deg, 4032 Forged, -5.0cc FLAT TOP CH 1.560"

AUTOTEC Chevy 350 Forged Pistons, 4.040", CHEVY 350 Flat Top.  

SUIT: CHEVY 350, STANDARD STROKE WITH STANDARD 5.700" CONRODS.

NO Rings - see Autotec Rings: AT-4040H, 1.5, 1.5, 3mm rings

The AutoTec pistons are made out of 4032 High Silicone Aluminum Alloy, it is extremely durable, has great wear resistance, a low expansion rate, and is very low in friction. These forged pistons are perfect for street/strip applications. The Autotec low expansion 4032 Forged pistons offer the best of both worlds, tough and durable like a full forged race piston, however low expansion so you can run a tighter clearance to stop piston knock on warm ups. The AutoTec pistons have standard features like broached pin oilers for increased wrist pin lubrication, accumulator grooves, pin fitting wrist pins and wire locks included. The AutoTec line is made with the same high quality tooling & machines as the RaceTec range.
Auto Tec pistons have CNC diamond turned machined skirts & ring grooves that accept 1.5, 1.5, 3mm rings (Rings Sold Separately)

GUDGEON:   927-2700-51-15C wall wrist pin included

HP Rating: 600hp to 800hp **

BORE:  + 040

ROD:    5.700

DISH:   -5.0cc (valve reliefs)

COMP HEIGH: 1.560"

TOP RING:  1.5 mm

2ND RING:  1.5 mm

OIL RING:  3.0 mm

PIN:  0.927"

RINGS:  NOT INCLUDED - we recommend the Autotech AT-4040

Compression Ratios:  10.4:1 @ 64cc  &   9.7:1 @ 72cc

4.040" Forged Flat top 

**Autotec have customers have fine tune engines that, with a bit of supercharger boost, yield 850+ horsepower in Small Block applications.

NOTE: image is not of actual product.