SMALL BLOCK CHEVY
BIG BLOCK CHEVY
FORD
MOPAR
PONTIAC
HONDA/ACURA
FLAT TOP / INVERTED DOME

  • 4032 low expansion high silicon aluminum alloy heat treated to SRP specifications
  • Ring land and crown thickness specifically engineered for mild turbo, supercharged and nitrous applications
  • Forced Pin Oiler for increased wrist pin lubrication
  • Pin fitting and double spiro locks included
  • 990-2930-150 wall wrist pin (150 grams) included
  • CNC Machined ring grooves accept 1/16, 1/16, 3/16 rings (Rings Sold Seperately)
  • Optional bearing steel pins available

BBC Flat Top
Std Bore: 454 = 4.250, 502 = 4.470
Ring package designed for: 1/16, 1/16, 3/16 Rings
 Tech and Installation Tips
Part # Cubic
Inches		 Bore Stroke Rod
Length		 Compression
Distance
Head Cubic Centimeters
112cc 118cc 124cc
Compression Ratio
Dome
Volume		 Gram
Weight		 Footnote Oversize Ring Set#
139477 460 4.280 4.000 6.135 1.645 8.5 8.2 7.9 -3cc 594 0.030 S100S8-4280-5
139478 466 4.310 4.000 6.135 1.645 8.6 8.3 8.0 -3cc 611 0.060 S100S8-4310-5
139479 469 4.320 4.000 6.135 1.645 8.7 8.3 8.0 -3cc 615 0.070 J100F8-4320-5
139480 475 4.350 4.000 6.135 1.645 8.8 8.4 8.1 -3cc 630 0.100 S100S8-4350-5
139481 502 4.470 4.000 6.135 1.645 9.2 8.8 8.5 -3cc 653 .STD J100S8-4470-5
139482 508 4.500 4.000 6.135 1.645 9.3 8.9 8.6 -3cc 670 0.030 S100S8-4500-5
139483 515 4.530 4.000 6.135 1.645 9.4 9.0 8.7 -3cc 686 0.060 S100S8-4030-5
142972 460 4.280 4.000 6.385 1.395 8.5 8.2 7.9 -3cc 549 0.030 S100S8-4280-5
142973 466 4.310 4.000 6.385 1.395 8.6 8.3 8.0 -3cc 562 0.060 S100S8-4310-5
142974 469 4.320 4.000 6.385 1.395 8.7 8.3 8.0 -3cc 568 0.070 J100F8-4320-5
142975 475 4.350 4.000 6.385 1.395 8.8 8.4 8.1 -3cc 582 0.100 S100S8-4350-5
142977 508 4.500 4.000 6.385 1.395 9.3 8.9 8.6 -3cc 618 0.030 S100S8-4500-5
142978 515 4.530 4.000 6.385 1.395 9.4 9.0 8.7 -3cc 635 0.060 S100S8-4530-5
139506 489 4.280 4.250 6.135 1.520 9.0 8.6 8.3 -3cc 568 0.030 S100S8-4280-5
139507 496 4.310 4.250 6.135 1.520 9.1 8.7 8.3 -3cc 591 0.060 S100S8-4310-5
139508 498 4.320 4.250 6.135 1.520 9.1 9.8 8.4 -3cc 596 0.070 J100F8-4320-5
139509 505 4.350 4.250 6.135 1.520 9.3 8.9 8.5 -3cc 595 0.100 S100S8-4350-5
139521 540 4.500 4.250 6.135 1.520 9.8 9.4 9.1 -3cc 644 0.030 S100S8-4500-5
139522 547 4.530 4.250 6.135 1.520 9.9 9.5 9.2 -3cc 664 0.010 S100S8-4530-5
142979 489 4.280 4.250 6.385 1.270 9.0 8.6 8.3 -3cc 520 B 0.030 S100S8-4280-5
142980 496 4.310 4.250 6.385 1.270 9.1 8.7 8.4 -3cc 532 B 0.060 S100S8-4310-5
142981 498 4.320 4.250 6.385 1.270 9.1 8.8 8.4 -3cc 538 B 0.070 J100F8-4320-5
142982 505 4.350 4.250 6.385 1.270 9.3 8.9 8.5 -3cc 552 B 0.100 S100S8-4350-5
142983 533 4.470 4.250 6.385 1.270 9.7 9.3 9.0 -3cc 572 B .STD J100S8-4470-5
142984 540 4.500 4.250 6.385 1.270 9.8 9.4 9.1 -3cc 595 B 0.030 S100S8-4500-5
142985 547 4.530 4.250 6.385 1.270 9.9 9.5 9.2 -3cc 607 B 0.060 S100S8-4530-5
231513 555 4.560 4.250 6.385 1.270 10.0 9.6 9.2 -3cc NEW B 0.040 S100S8-4560-5

BBC Inverted Dome
Std Bore: 4.470
Ring package designed for: 1/16, 1/16, 3/16 Rings
Part # Cubic
Inches		 Bore Stroke Rod
Length		 Compression
Distance
Head Cubic Centimeters
112cc 118cc 124cc
Compression Ratio
Dome
Volume		 Gram
Weight		 Footnote Oversize Ring Set#
181553 540 4.500 4.250 6.385 1.270 9.4 9.0 8.7 -9cc 587 B 0.030 S100S8-4500-5

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