ECONOMICAL "H" BEAM STEEL RODS - learn more about our connecting rods
Manley "H" Beam connecting rods are manufactured from 4340 forgings to the same exacting standards developed and approved by our original equipment customers. There is a vast difference in quality between a Manley "H" Beam and the "other" inexpensive H-Beams on the market. Weight matched to +/- 1.5 grams. Perfectly round big and small ends. Bend and twist is tightly controlled. Cap fasteners are 7/16" ARP cap screws.
Part No.
Center-to Center
Big End Bore
Big End Width
Pin End Width
Pin Bore
Gram Weight
Chrysler/Dodge HEMI 5.7L / 6.1L / 6.4L Stock Length with ARP 8740 Cap Fasteners
14085-8
6.240"
2.252"
.933"
1.000"
.9281" (SB Chevy)
670
14086-8
6.240"
2.252"
.933"
1.000"
.9457" (Stock 5.7L)
675
14087-8
6.240"
2.252"
.933"
1.000"
.9848" (Stock 6.1L)
665
14088-8
6.200" (6.4L)
2.252"
.933"
1.000"
.9281" (SB Chevy)
665
14089-8
6.200" (6.4L)
2.252"
.933"
1.000"
.9457" (Stock 6.4L)
670
14055-8
6.125" Stroker
2.225"
.941"
1.060"
.9281"(SB Chevy)
650
14056-8
6.125" Stroker
2.125"
.941"
1.060"
.9281" (SB Chevy)
650
14057-8
6.125" Stroker
2.125"
.941"
.930"
.8671"
620
Chrysler/Dodge HEMI 5.7L / 6.1L / 6.4L Stock Length with ARP 2000 Cap Fasteners
14085R-8
6.240"
2.252"
.933"
1.000"
.9281" (SB Chevy)
671
14086R-8
6.240"
2.252"
.933"
1.000"
.9457" (Stock 5.7L)
676
14087R-8
6.240"
2.252"
.933"
1.000"
.9848" (Stock 6.1L)
666
14088R-8
6.200" (6.4L)
2.252"
.933"
1.000"
.9281" (SB Chevy)
666
14089R-8
6.200" (6.4L)
2.252"
.933"
1.000"
.9457" (Stock 6.4L)
671
14055R-8
6.125" Stroker
2.225"
.941"
1.060"
.9281"(SB Chevy)
651
14056R-8
6.125" Stroker
2.125"
.941"
1.060"
.9281" (SB Chevy)
651
14057R-8
6.125" Stroker
2.125"
.941"
.930"
.8671"
621
PRO SERIES "I" BEAM STEEL RODS - learn more about our connecting rods
Manley Pro Series connecting rods are forged from aircraft quality 4340 vacuum degassed material. Each rod is fully machined in the Manley Lakewood, NJ factory to the highest standards. Our signature "Pro Series Lightweight" design combines the appropriate weight and rugged strength for ultimate horsepower applications. Each rod is shot peened after machining and magnafluxed. Bores are held to exacting tolerances. Bend and twist is tightly controlled. Cap fasteners are 7/16" ARP 2000 or optional 7/16" ARP Custom Age 625 cap screws.
These rods are also available with ARP 625+ fasteners. To order, affix an "R6" to the part number.
The above connecting rods are supplied with 1.450" under head length 7/16" ARP 2000 cap screw fasteners P/N 42390. Upgraded 7/16" ARP Custom Age 625+ cap screws P/N 42252 are available. To order upgraded fasteners, affix "R6" after the rod part number.
