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EXTREME DUTY 23º INV. DOME

These pistons are specially designed for forced induction and nitrous applications. Pistons include .310" pocket depths and precision CNC machined ring grooves that accept 1/16, 1/16, 3/16 rings.

Includes:
Pin #927-2950-15-51S (140g)
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

Click here to see matching JE Pro Seal Head Gaskets!

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
232515 377 4.000 3.750 6.000 9.020 1.145 9.1 8.7 8.1 -28.0 440 B STD
338223 377 4.000 3.750 6.000 9.000 1.125 9.1 8.7 7.8 -28.0 NEW B,M STD J100F8-4000-5
338224 379 4.010 3.750 6.000 9.000 1.125 9.2 8.7 7.9 -28.0 NEW B,M 0.010 J100F8-4010-0
338225 381 4.020 3.750 6.000 9.000 1.125 9.2 8.7 7.9 -28.0 NEW B,M 0.020 J100F8-4020-5
131631 383 4.030 3.750 5.700 9.000 1.425 9.0 8.5 7.8 -31.0 485 0.030 J10008-4030-5
170817 383 4.030 3.750 6.000 9.000 1.125 9.3 8.8 8.2 -28.0 430 B 0.030 J10008-4030-5
338227 385 4.040 3.750 5.700 9.000 1.425 9.0 8.6 7.8 -31.0 NEW A,M 0.040 J10008-4040-5
338226 385 4.040 3.750 6.000 9.000 1.125 9.3 8.9 8.2 -28.0 NEW B,M 0.040 J10008-4040-5
194887 388 4.060 3.750 6.000 9.000 1.125 9.4 8.9 8.3 -28.0 445 B 0.060 J10008-4060-5
232513 352 4.000 3.500 6.000 9.020 1.270 8.8 8.3 7.5 -26.0 473 A,B,M STD J100F8-4000-5
218591 355 4.030 3.500 6.000 9.000 1.250 8.9 8.4 7.6 -26.0 458 A,B 0.030 J100F8-4030-5
131635 353 4.020 3.480 5.700 9.000 1.560 9.1 8.6 7.8 -22.0 512 A 0.020 J10008-4020-5
131636 355 4.030 3.480 5.700 9.000 1.560 9.2 8.7 7.8 -22.0 515 A 0.030 J10008-4030-5


400 Series
Std Bore: 4.125
Ring package designed for: 1/16, 1/16, 3/16 Rings

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 76cc
Compression Ratio
Dome
Vol.
Gram
Wt.
Footnote Oversize Recom.
Ring Set
232514 400 4.125 3.750 5.700 9.020 1.445 8.9 8.5 7.8 -36.0 512 STD J100F8-4125-5
338231 400 4.125 3.750 5.700 9.000 1.425 8.9 8.5 7.6 -36.0 NEW M STD J100F8-4125-5
232516 400 4.125 3.750 6.000 9.020 1.145 9.6 9.1 8.2 -28.0 466 B STD J100F8-4125-5
242885 400 4.125 3.750 6.000 9.000 1.125 9.6 9.1 8.5 -28.0 459 B STD J10008-4125-5
338232 403 4.135 3.750 5.700 9.000 1.425 8.9 8.6 7.6 -36.0 NEW M 0.010 J100F8-4135-5
338228 403 4.135 3.750 6.000 9.000 1.125 9.6 9.1 8.5 -28.0 NEW B,M 0.010 J100F8-4135-5
338233 405 4.145 3.750 5.700 9.000 1.425 9.0 8.6 7.7 -36.0 NEW M 0.020 J10008-4145-5
338229 405 4.145 3.750 6.000 9.000 1.125 9.7 9.2 8.5 -28.0 NEW B,M 0.020 J10008-4145-5
131633 407 4.155 3.750 5.700 9.000 1.425 9.1 8.7 7.8 -36.0 518 0.030 J10008-4155-5
170818 407 4.155 3.750 6.000 9.000 1.125 9.7 9.2 8.6 -28.0 476 B 0.030 J10008-4155-5
338234 409 4.165 3.750 5.700 9.000 1.425 9.1 8.7 7.8 -36.0 NEW M 0.040 J100F8-4165-5
194888 409 4.165 3.750 6.000 9.000 1.125 9.8 9.2 8.6 -28.0 483 B 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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