Share |
F.S.R. SUPERFLY GP (GAS PORTED)

The ultimate light-weight piston for Late Model Stock two-barrel and similar applications up to 400 horsepower. FSR forging provides reduced skirt contact that lowers friction for optimum HP gains. Pistons feature a .190" deep intake valve pocket for maximum compression. The ring grooves are machined for .043, .043, 3mm back cut rings with lateral gas ports provided for superior ring seal.

Includes:
Pin #927-2350-15-51C (111g)
Wire lock #927-073-MW
Lateral gas ports
Double Pin Oilers
Accumulator Groove
Contact Reduction Grooves
Rated up to 400 horsepower
350 Series
Std Bore: 4.000
Ring package designed for: .043, .043, 3MM 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
170687 357 4.030 3.500 6.125 9.000 1.125 11.6 10.8 9.4 -1.8 323 A 0.030
170684 357 4.030 3.500 6.000 9.000 1.250 11.6 10.8 9.4 -1.8 334 A 0.030
300245 357 4.030 3.500 6.250 9.000 1.000 11.6 10.8 9.4 -1.8 310 A,M .030 J71408-4030-5
300247 357 4.030 3.500 6.125 9.000 1.125 11.6 10.8 9.4 -1.8 CALL A,M .030 J71408-4030-5
300249 357 4.030 3.500 6.000 9.000 1.250 11.6 10.8 9.4 -1.8 334 A .030 J71408-4030-5
300252 357 4.030 3.500 5.700 9.000 1.550 11.6 10.8 9.4 -1.8 CALL A .030 J71408-4030-5
300253 358 4.035 3.500 5.700 9.000 1.550 11.6 10.8 9.4 -1.8 CALL A,M .035 J71408-4030-5
300250 358 4.035 3.500 6.000 9.000 1.250 11.6 10.8 9.4 -1.8 334 A,M .035 J71408-4030-5
300251 359 4.040 3.500 6.000 9.000 1.250 11.6 10.8 9.4 -1.8 338 A,M .040 J71408-4040-5
300248 359 4.040 3.500 6.125 9.000 1.125 11.6 10.8 9.4 -1.8 CALL A,M .040 J71408-4040-5
300246 359 4.040 3.500 6.250 9.000 1.000 11.6 10.8 9.4 -1.8 311 A .040 J71408-4040-5
300254 359 4.040 3.500 5.700 9.000 1.550 11.6 10.8 9.4 -1.8 372 A .040 J71408-4040-5
170680 359 4.040 3.500 6.250 9.000 1.000 11.6 10.8 9.4 -1.8 312 A,M 0.040

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


JE Pistons 10800 Valley View Street Cypress, California 90630 - Sales/Technical Assistance | Careers @ JE
Copyright © 2017 JE Pistons Inc. All Rights Reserved - Use of this site is subject to the following list of Terms & Conditions.