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350 FLAT TOP 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 FLAT TOP 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
329408 402 4.000 4.000 6.000 9.000 1.000 12.4 11.6 10.8 -5 362 B,M STD JG3108-4000-7
329409 403 4.005 4.000 6.000 9.000 1.000 12.5 11.6 10.8 -5 365 B,M .005 JG3108-4000-7
329410 404 4.010 4.000 6.000 9.000 1.000 12.5 11.6 10.9 -5 367 B,M .010 JG3108-4010-4
329411 406 4.020 4.000 6.000 9.000 1.000 12.5 11.7 10.9 -5 369 B,M .020 JG3108-4020-2
271054 408 4.030 4.000 6.000 9.000 1.000 12.6 11.7 11.0 -5 372 B,M 0.030
329412 410 4.040 4.000 6.000 9.000 1.000 12.6 11.8 11.0 -5 378 B,M .040 JG31F8-4060-0
329413 414 4.060 4.000 6.000 9.000 1.000 12.7 11.8 11.1 -5 382 B,M .060 JG31F8-4060-0
329415 390 4.000 3.875 6.000 9.000 1.062 12.0 11.2 10.5 -5 375 B,M STD JG3108-4000-7
329416 391 4.005 3.875 6.000 9.000 1.062 12.1 11.2 10.5 -5 376 B,M .005 JG3108-4000-7
329417 391 4.010 3.875 6.000 9.000 1.062 12.1 11.3 10.5 -5 378 B,M .010 JG3108-4010-4
329418 393 4.020 3.875 6.000 9.000 1.062 12.2 11.3 10.6 -5 380 B,M .020 JG3108-4020-2
279578 395 4.030 3.875 6.000 9.000 1.062 12.2 11.4 10.6 -5 383 B 0.030
329419 397 4.040 3.875 6.000 9.000 1.062 12.2 11.4 10.6 -5 387 B,M .040 JG31F8-4040-2
329420 401 4.060 3.875 6.000 9.000 1.062 12.3 11.5 10.7 -5 392 B,M .060 JG31F8-4060-0
295440 377 4.000 3.750 6.000 9.000 1.125 11.7 10.9 10.2 -5 388 B STD JG31F8-4000-7
329425 377 4.000 3.750 5.700 9.000 1.425 11.7 10.9 10.2 -5 422 STD JG3108-4000-7
329426 378 4.005 3.750 5.700 9.000 1.425 11.8 10.9 10.2 -5 424 .005 JG3108-4000-7
329421 378 4.005 3.750 6.000 9.000 1.125 11.8 10.9 10.2 -5 390 B .005 JG3108-4000-7
329422 379 4.010 3.750 6.000 9.000 1.125 11.8 10.9 10.2 -5 391 B,M .010 JG3108-4010-4
329427 379 4.010 3.750 5.700 9.000 1.425 11.8 10.9 10.2 -5 427 M .010 JG3108-4010-4
329428 381 4.020 3.750 5.700 9.000 1.425 11.8 11.0 10.3 -5 430 M .020 JG3108-4020-2
329423 381 4.020 3.750 6.000 9.000 1.125 11.8 11.0 10.3 -5 393 B,M .020 JG3108-4020-2
268830 383 4.030 3.750 6.000 9.000 1.125 11.9 11.1 10.3 -5 394 B 0.030
271055 383 4.030 3.750 5.700 9.000 1.425 11.9 11.1 10.3 -5 434 0.030
279479 385 4.040 3.750 5.700 9.000 1.425 11.9 11.1 10.3 -5 435 0.040
279477 385 4.040 3.750 6.000 9.000 1.125 11.9 11.1 10.3 -5 399 B 0.040
329424 388 4.060 3.750 6.000 9.000 1.125 12.0 11.1 10.4 -5 405 B,M .060 JG31F8-4060-0
329429 388 4.060 3.750 5.700 9.000 1.425 12.0 11.1 10.4 -5 442 M .060 JG31F8-4060-0
295441 350 4.000 3.480 6.000 9.000 1.260 11.0 10.2 9.5 -5 409 A STD JG31F8-4000-7
295442 350 4.000 3.480 5.700 9.000 1.560 11.0 10.2 9.5 -5 447 A 0.030 JG31F8-4000-7
322508 351 4.005 3.480 5.700 9.000 1.560 11.0 10.2 9.5 -5 444 A,M 0.005 JG3108-4000-7
329430 351 4.005 3.480 6.000 9.000 1.260 11.0 10.2 9.6 -5 410 A .005 JG3108-4000-7
329431 352 4.010 3.480 6.000 9.000 1.260 11.0 10.2 9.6 -5 411 A,M .010 JG3108-4010-4
322509 352 4.010 3.480 5.700 9.000 1.560 11.0 10.2 9.6 -5 446 A,M 0.010 JG3108-4010-4
322510 353 4.020 3.480 5.700 9.000 1.560 11.1 10.3 9.7 -5 448 A,M 0.020 JG3108-4020-2
329432 353 4.020 3.480 6.000 9.000 1.260 11.0 10.3 9.6 -5 412 A,M .020 JG3108-4020-2
271056 355 4.030 3.480 6.000 9.000 1.260 11.1 10.3 9.7 -5 414 A 0.030
271057 355 4.030 3.480 5.700 9.000 1.560 11.1 10.3 9.7 -5 452 A 0.030
271054 355 4.030 3.480 6.250 8.990 1.000 11.1 10.3 9.7 -5 372 A,B,M 0.030
268830 355 4.030 3.480 6.125 8.990 1.125 11.1 10.3 9.7 -5 394 A,B 0.030
279477 357 4.040 3.480 6.125 8.990 1.125 11.2 10.4 9.8 -5 399 A,B 0.040
279481 357 4.040 3.480 5.700 9.000 1.560 11.1 10.3 9.7 -5 451 A 0.040
279480 357 4.040 3.480 6.000 9.000 1.260 11.1 10.3 9.7 -5 422 A 0.040
329433 360 4.060 3.480 6.000 9.000 1.260 11.2 10.4 9.8 -5 431 A,M .060 JG31F8-4060-0
329434 360 4.060 3.480 5.700 9.000 1.560 11.2 10.4 9.8 -5 459 A .060 JG31F8-4060-0

- 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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