AUTO TEC SMALL BLOCK CHEVY 4.000 BORE INVERTED DOME PISTONS

CALL SHANON AT 507 445 3235 WITH ANY QUESTIONS. Pistons are Manufactured on 4032 High Silicone material forgings that are excellent for street and strip applications. CNC Precision machined ring grooves for 1.5, 1.5, 3.0 rings. Top ring land gas distribution grrove to enhance performance and improve ring seal. 927-2700-51-15C wrist pins (130 Grams), pin fit, wire locks, broached pin oilers, and accumulator groove are included. Diamond turned skirts. Forged side relief with external lightening cavities where available. American made. Cubic Inch Bore Size Over Size Stroke Rod Length Comp. Height 64cc 66cc 72cc Dome Volume Gram Weight Foot Notes Piston Part Number Street Ring Set 350 4.000 STD 3.480 5.700 1.560 10.2 9.5 8.9 -11.0 -- S 1000127 AT 4000 353 4.020 0.020 3.480 5.700 1.560 10.1 9.5 8.9 -11.9 -- S 1000128 AT 4020 355 4.030 0.030 3.480 5.700 1.560 10.1 9.5 8.9 -12.3 -- S 1000129 AT 4030 357 4.040 0.040 3.480 5.700 1.560 10.1 9.5 8.9 -12.7 -- S 1000130 AT 4040 360 4