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350 / 400 STANDARD FLAT TOP

These classic, race winning JE flat top pistons work with most aftermarket 23ยบ heads. They have extra deep valve pockets and a low-friction skirt design. These pistons are designed to use 1/16, 1/16, 3/16 rings or 1/16, 1/16, 3mm rings, see footnote J.

Includes:
Contact Reduction Grooves
Double Spiro Locks #927-042-CS
Double Pin Oilers
350 Series
Std Bore: 4.000
Ring package designed for: 1/16, 1/16, 3/16 Rings
Tech and Installation Tips
Valve Relief Diagram
Part # CID Bore Stroke Rod
Lgth.		 Block
Ht.		 Comp.
Ht.
Head Cubic Centimeters
58cc 64cc 76cc
Compression Ratio
Dome
Vol.		 Gram
Wt.		 Footnote Oversize Recom.
Ring Set
181920 383 4.030 3.750 5.700 9.000 1.425 11.9 11.1 9.7 -5.0 424 0.030 J10008-4030-5
181915 355 4.020 3.500 6.000 9.000 1.250 11.2 10.3 9.1 -5.0 397 A 0.020 J10008-4020-5
181916 357 4.030 3.500 6.000 9.000 1.250 11.2 10.3 9.1 -5.0 399 A 0.030 J10008-4030-5
181924 358 4.030 3.500 5.700 9.000 1.550 11.2 10.3 9.1 -5.0 439 A 0.030 J10008-4030-5
181907 357 4.030 3.500 6.250 9.000 1.000 11.2 10.3 9.1 -5.0 369 A,B 0.030 J10008-4030-5
181925 358 4.035 3.500 5.700 9.000 1.550 11.2 10.3 9.1 -5.0 442 A 0.035 J10008-4030-5
181917 358 4.035 3.500 6.000 9.000 1.250 11.2 10.3 9.1 -5.0 403 A 0.035 J10008-4030-5
181918 359 4.040 3.500 6.000 9.000 1.250 11.2 10.3 9.1 -5.0 406 A 0.040 J10008-4040-5
181926 359 4.040 3.500 5.700 9.000 1.550 11.2 10.3 9.1 -5.0 449 A 0.040 J10008-4040-5
181908 359 4.040 3.500 6.250 9.000 1.000 11.2 10.3 9.1 -5.0 370 A,B 0.040 J10008-4040-5
181909 359 4.040 3.500 6.200 9.000 1.050 11.2 10.3 9.1 -5.0 379 A,B 0.040 J10008-4040-5
181927 362 4.060 3.500 5.700 9.000 1.550 11.2 10.3 9.1 -5.0 459 A 0.060 J10008-4060-5
181919 362 4.060 3.500 6.000 9.000 1.250 11.2 10.3 9.1 -5.0 412 A 0.060 J10008-4060-5
207511 364 4.070 3.500 6.000 9.000 1.250 11.2 10.3 9.1 -5.0 416 A 0.070 J100L8-4070-5


350 Series
Std Bore: 4.000
Ring package designed for: 1/16, 1/16, 3.0mm Rings
Part # CID Bore Stroke Rod
Lgth.		 Block
Ht.		 Comp.
Ht.
Head Cubic Centimeters
58cc 64cc 76cc
Compression Ratio
Dome
Vol.		 Gram
Wt.		 Footnote Oversize Recom.
Ring Set
181911 383 4.030 3.750 6.000 9.000 1.125 11.9 11.1 9.7 -5.0 391 J 0.030 J30008-4030-5
181913 385 4.040 3.750 6.000 9.000 1.125 11.9 11.1 9.7 -5.0 394 J 0.040 J30008-4040-5
181914 388 4.060 3.750 6.000 9.000 1.125 11.9 11.1 9.7 -5.0 398 J 0.060 J30008-4060-5
181910 355 4.020 3.500 6.125 9.000 1.125 11.2 10.3 9.1 -5.0 384 A,J,M 0.020 J30008-4020-5
181911 357 4.030 3.500 6.125 9.000 1.125 11.2 10.3 9.1 -5.0 391 A,J 0.030 J30008-4030-5
181912 358 4.035 3.500 6.125 9.000 1.125 11.2 10.3 9.1 -5.0 390 A,J,M 0.035 J30008-4030-5
181913 359 4.040 3.500 6.125 9.000 1.125 11.2 10.3 9.1 -5.0 394 A,J 0.040 J30008-4040-5
181914 362 4.060 3.500 6.125 9.000 1.125 11.2 10.3 9.1 -5.0 398 A,J 0.060 J30008-4060-5


400 Series
Std Bore: 4.125 Ring package designed for: 1/16, 1/16, 3/16 Rings
Part # CID Bore Stroke Rod
Lgth.		 Block
Ht.		 Comp.
Ht.
Head Cubic Centimeters
58cc 64cc 76cc
Compression Ratio
Dome
Vol.		 Gram
Wt.		 Footnote Oversize Recom.
Ring Set
242886 428 4.125 4.000 6.000 9.000 1.000 13.1 12.2 10.7 -5.0 391 B STD J10008-4125-5
194339 434 4.155 4.000 6.000 9.000 1.000 13.3 12.3 10.8 -5.0 407 B 0.030 J10008-4155-5
194340 436 4.165 4.000 6.000 9.000 1.000 13.3 12.4 10.9 -5.0 411 B 0.040 J10008-4165-5
207512 440 4.185 4.000 6.000 9.000 1.000 13.5 12.5 11.0 -5.0 420 B 0.060 J100F8-4185-5
181938 401 4.125 3.750 6.000 9.000 1.125 12.3 11.4 10.1 -5.0 418 B STD J10008-4125-5
181939 405 4.145 3.750 6.000 9.000 1.125 12.4 11.5 10.1 -5.0 422 M,B 0.020 J10008-4145-5
181940 407 4.155 3.750 6.000 9.000 1.125 12.5 11.6 10.2 -5.0 426 B 0.030 J10008-4155-5
181944 407 4.155 3.750 5.700 9.000 1.425 12.5 11.6 10.2 -5.0 472 0.030 J10008-4155-5
181941 409 4.165 3.750 6.000 9.000 1.125 12.5 11.6 10.2 -5.0 431 B 0.040 J10008-4165-5
181942 380 4.155 3.500 6.000 9.000 1.250 11.7 10.9 9.6 -5.0 445 A 0.030 J10008-4155-5
181944 380 4.155 3.500 5.850 9.025 1.425 11.7 10.9 9.6 -5.0 472 0.030 J10008-4155-5
181943 381 4.165 3.500 6.000 9.000 1.250 11.7 10.9 9.6 -5.0 447 A 0.040 J10008-4165-5

- Denotes part # has been issued a new part #. A list referencing old part #s to their new counterparts will be available shortly.

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