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350 / 400 SMALL BLOCK INVERTED DOME PROFESSIONAL SERIES

    PISTON DESIGN
  • Advanced, lightweight FSR forging that eliminates stress concentrations for superior strength
  • Up to 20% lighter than traditional equivalent
  • High-silicon 4032 aluminum alloy for reduced piston-to-wall clearance and quiet operation
  • Accumulator grooves for improved ring seal
  • Designed for normally aspirated or moderate forced induction/nitrous applications
  • Now includes high performance skirt coating!
    RINGS INCLUDED
  • Lightweight, low friction metric ring package included
  • 1.2mm top ring, 1.5mm 2nd ring, 3.0mm standard tension oil ring
  • Minimal filing required

    PINS AND LOCKS
  • High quality 2.250" pin further reduces reciprocating weight
  • Carbon steel wire locks included
350 SMALL BLOCK INVERTED DOME PROFESSIONAL SERIES
Std Bore: 4.000
Ring package: 1.2mm, 1.5mm, 3.0mm Premium Rings Included

Click here to see matching JE Pro Seal Head Gaskets!
Part # CID Bore Stroke Rod
Lgth.
Block
Ht.
Comp.
Ht.
Head Cubic Centimeters
58cc 64cc 70cc
Compression Ratio
Dome
Vol.
Gram
Wt.
Footnote Oversize Recom.
Ring Set
329479 402 4.000 4.000 6.000 9.000 1.000 10.9 10.3 9.7 -16 332 B,M STD JG3108-4000-7
329480 403 4.005 4.000 6.000 9.000 1.000 10.9 10.3 9.7 -16 333 B,M .005 JG3108-4000-7
329481 404 4.010 4.000 6.000 9.000 1.000 11.0 10.3 9.7 -16 334 B,M .010 JG3108-4010-4
329482 406 4.020 4.000 6.000 9.000 1.000 11.0 10.3 9.8 -16 336 B,M .020 JG3108-4020-2
271060 408 4.030 4.000 6.000 9.000 1.000 11.1 10.4 9.8 -16 338 B,M 0.030 JG31F8-4030-2
329483 410 4.040 4.000 6.000 9.000 1.000 11.1 10.4 9.8 -16 341 B,M .040 JG31F8-4040-2
329484 414 4.060 4.000 6.000 9.000 1.000 11.2 10.5 9.8 -16 347 B,M .060 JG31F8-4060-0
329498 377 4.000 3.750 5.700 9.000 1.425 8.9 8.4 8.0 -31 443 M STD JG3108-4000-7
329492 377 4.000 3.750 5.700 9.000 1.425 10.3 9.7 9.1 -16 427 M STD JG3108-4000-7
329486 377 4.000 3.750 6.000 9.000 1.125 10.3 9.7 9.1 -16 370 B,M STD JG3108-4000-7
329499 378 4.005 3.750 5.700 9.000 1.425 8.9 8.4 8.0 -31 444 .005 JG3108-4000-7
329493 378 4.005 3.750 5.700 9.000 1.425 10.3 9.7 9.1 -16 428 .005 JG3108-4000-7
329487 378 4.005 3.750 6.000 9.000 1.125 10.3 9.7 9.1 -16 371 B .005 JG3108-4000-7
329500 379 4.010 3.750 5.700 9.000 1.425 8.9 8.5 8.1 -31 445 M .010 JG3108-4010-4
329494 379 4.010 3.750 5.700 9.000 1.425 10.3 9.7 9.2 -16 429 M .010 JG3108-4010-4
329488 379 4.010 3.750 6.000 9.000 1.125 10.3 9.7 9.2 -16 372 B,M .010 JG3108-4010-4
329501 381 4.020 3.750 5.700 9.000 1.425 9.0 8.5 8.1 -31 447 M .020 JG3108-4020-2
329495 381 4.020 3.750 5.700 9.000 1.425 10.4 9.8 9.2 -16 431 M .020 JG3108-4020-2
329489 381 4.020 3.750 6.000 9.000 1.125 10.4 9.8 9.2 -16 374 B,M .020 JG3108-4020-2
279580 383 4.030 3.750 5.700 9.000 1.425 9.0 8.5 8.1 -31 449 0.030
271061 383 4.030 3.750 6.000 9.000 1.125 10.4 9.8 9.3 -16 376 B 0.030
271062 383 4.030 3.750 5.700 9.000 1.425 10.4 9.8 9.3 -16 433 0.030
329502 385 4.040 3.750 5.700 9.000 1.425 9.0 8.6 8.2 -31 452 .040 JG31F8-4040-2
329496 385 4.040 3.750 5.700 9.000 1.425 10.5 9.8 9.3 -16 435 .040 JG31F8-4040-2
329490 385 4.040 3.750 6.000 9.000 1.125 10.5 9.8 9.3 -16 378 B .040 JG31F8-4040-2
329503 388 4.060 3.750 5.700 9.000 1.425 9.1 8.6 8.2 -31 460 M .060 JG31F8-4060-0
329497 388 4.060 3.750 5.700 9.000 1.425 11.6 9.9 9.4 -16 442 M .060 JG31F8-4060-0
329491 388 4.060 3.750 6.000 9.000 1.125 10.6 9.9 9.4 -16 384 B,M .060 JG31F8-4060-0
329504 350 4.000 3.480 5.700 9.000 1.560 8.9 8.4 8.0 -24 453 A,M STD JG3108-4000-7
329486 350 4.000 3.480 6.125 8.990 1.125 9.6 9.1 8.5 -16 370 A,B,M STD JG3108-4000-7
329505 351 4.005 3.480 5.700 9.000 1.560 8.9 8.4 8.0 -24 454 A,M .005 JG3108-4000-7
329487 351 4.005 3.480 6.125 8.990 1.125 9.7 9.1 8.6 -16 371 A,B .005 JG3108-4000-7
329479 350 4.005 3.480 6.250 8.990 1.000 9.6 9.1 8.5 -16 332 A,B,M STD JG3108-4000-7
329480 351 4.005 3.480 6.250 8.990 1.000 9.7 9.1 8.6 -16 333 A,B,M .005 JG3108-4000-7
329506 352 4.010 3.480 5.700 9.000 1.560 8.9 8.5 8.0 -24 455 A,M .010 JG3108-4010-4
329488 352 4.010 3.480 6.125 8.990 1.125 9.7 9.1 8.6 -16 372 A,B,M .010 JG3108-4010-4
329481 352 4.010 3.480 6.250 8.990 1.000 9.7 9.1 8.6 -16 334 A,B,M .010 JG3108-4010-4
329507 353 4.020 3.480 5.700 9.000 1.560 9.0 8.5 8.0 -24 457 A,M .020 JG3108-4020-2
329489 353 4.020 3.480 6.125 8.990 1.125 9.7 9.1 8.6 -16 374 A,B .020 JG3108-4020-2
329482 353 4.020 3.480 6.250 8.990 1.000 9.7 9.1 8.6 -16 336 A,B,M .020 JG3108-4020-2
279581 355 4.030 3.480 5.700 9.000 1.560 9.0 8.5 8.0 -24 459 A 0.030
271060 355 4.030 3.480 6.250 8.990 1.000 9.8 9.2 8.7 -16 338 A,B 0.030
271061 355 4.030 3.480 6.125 8.990 1.125 9.8 9.2 8.7 -16 376 A,B 0.030
329508 357 4.040 3.480 5.700 9.000 1.560 9.0 8.5 8.1 -24 462 A,M .040 JG31F8-4040-2
329490 357 4.040 3.480 6.125 8.990 1.125 9.8 9.2 8.7 -16 378 A,B .040 JG31F8-4040-2
329483 357 4.040 3.480 6.250 8.990 1.000 9.8 9.2 8.7 -16 341 A,B,M .040 JG31F8-4040-2
329509 360 4.060 3.480 5.700 9.000 1.560 9.1 8.6 8.2 -24 465 A,M .060 JG31F8-4060-0
329491 360 4.060 3.480 6.125 8.990 1.125 9.8 9.3 8.8 -16 384 A,B,M .060 JG31F8-4060-0
329484 360 4.060 3.480 6.250 8.990 1.000 9.8 9.3 8.8 -16 347 A,B,M .060 JG31F8-4060-0


400 SMALL BLOCK INVERTED DOME PROFESSIONAL SERIES
Std Bore: 4.000
Ring package: 1.2mm, 1.5mm, 3.0mm Premium Rings Included

Click here to see matching JE Pro Seal Head Gaskets!
Part # CID Bore Stroke Rod
Lgth.
Block
Ht.
Comp.
Ht.
Head Cubic Centimeters
58cc 64cc 70cc
Compression Ratio
Dome
Vol.
Gram
Wt.
Footnote Oversize Recom.
Ring Set
329511 428 4.125 4.000 6.000 9.000 1.000 11.4 10.8 10.2 -16 343 B STD JG31F8-4125-2
329512 429 4.130 4.000 6.000 9.000 1.000 11.5 10.8 10.2 -16 344 B,M 0.005 JG31F8-4135-2
329513 430 4.135 4.000 6.000 9.000 1.000 11.5 10.8 10.2 -16 345 B,M 0.010 JG31F8-4135-2
271067 434 4.155 4.000 6.000 9.000 1.000 11.6 10.9 10.3 -16 349 B 0.030
329515 414 4.125 3.875 6.000 9.000 1.062 11.2 10.5 9.9 -16 375 B STD JG31F8-4125-2
329516 415 4.130 3.875 6.000 9.000 1.062 11.2 10.5 9.9 -16 377 B,M 0.005 JG31F8-4135-2
329517 416 4.135 3.875 6.000 9.000 1.062 11.2 10.5 9.9 -16 376 B,M 0.010 JG31F8-4135-2
271068 421 4.155 3.875 6.000 9.000 1.062 11.3 10.6 10.0 -16 381 B 0.030
329518 401 4.125 3.750 6.000 9.000 1.125 10.8 10.2 9.6 -16 385 B STD JG31F8-4125-2
329519 402 4.130 3.750 6.000 9.000 1.125 10.9 10.2 9.6 -16 386 B,M 0.005 JG31F8-4135-2
329520 403 4.135 3.750 6.000 9.000 1.125 10.9 10.2 9.6 -16 387 B,M 0.010 JG31F8-4135-2
271069 406 4.155 3.750 6.000 9.000 1.125 11.0 10.3 9.7 -16 391 B 0.030
329518 372 4.125 3.480 6.125 8.990 1.125 10.1 9.5 9.0 -16 385 A,B STD JG31F8-4125-2
329511 372 4.125 3.480 6.250 8.990 1.000 10.1 9.5 9.0 -16 343 A,B STD JG31F8-4125-2
329512 373 4.130 3.480 6.250 8.990 1.000 10.1 9.5 9.0 -16 344 A,B,M 0.005 JG31F8-4135-2
329519 373 4.130 3.480 6.125 8.990 1.125 10.1 9.5 9.0 -16 386 A,B 0.005 JG31F8-4135-2
329520 374 4.135 3.480 6.125 8.990 1.125 10.2 9.6 9.0 -16 387 A,B,M 0.010 JG31F8-4135-2
329513 374 4.135 3.480 6.250 8.990 1.000 10.2 9.6 9.0 -16 345 A,B,M 0.010 JG31F8-4135-2
271067 377 4.155 3.480 6.250 8.990 1.000 10.3 9.6 9.1 -16 349 A,B 0.030
271069 377 4.155 3.480 6.125 8.990 1.125 10.3 9.6 9.1 -16 391 A,B 0.030

- 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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