Page 480 - 2021-22_EngineCatalogAP

OEM REPLACEMENT BEARINGS
Pontiac 326-455
Description
326/350/389/400/421/428/455
Main Bearings, 326/350/389/400 Main Bearings, 421/428/455 Rod Bearings
Cam Bearings
FORGED PISTONS
Pontiac 326-455
Part No. Description
389 - 4.100" Bore - Flat-Top
DSS6100CX-4100 GSX / 2 Reliefs, -5cc, .980" Pin Dia.
Clevite P-Series
M77MS483G M77MS667P M77CB758P M77SH292S
Federal Mogul
SEA4040M
SEA4221M SEA1555CPA SEA1220M
Dura-Bond
— — — DURP-4
PONTIAC V8 326-455
400 - 4.150" Bore -
SEAL2262F30
400 - 4.160" Bore -
SEAL2262F40
400 - 4.180" Bore -
SEAL2262F60
455 - 4.180" Bore -
ICNIC888.030
455 - 4.185" Bore -
SRP149721
P/F - PRESS-FIT / FLOATING
Flat-Top
4 Reliefs, -6.7cc
Flat-Top
4 Reliefs, -6.7cc
Flat-Top
4 Reliefs, -6.7cc
Flat-Top
2 Reliefs, - 5.5cc
Flat-Top
2 Reliefs, -5cc
Stroke
3.750" 3.750"
3.750" 3.750" 4.210" 4.210"
Rod Length
6.625" 6.625"
6.625" 6.625" 6.630" 6.625"
Comp Height
1.710" 1.714"
1.714" 1.714" 1.490" 1.480"
Wrist Pin Type
P/F PRESS PRESS PRESS P/F P/F
Comp Ratio
10.28 @ 72cc 10.1 @ 72cc
10.1 @ 72cc 10.2 @ 72cc 11.3 @ 72cc 11.4 @ 72cc
Cubic Inch
389 406
408 412 462 463
Piston Ring Package
1/16", 1/16", 3/16"v 5/64", 5/64", 3/16"
5/64", 5/64", 3/16" 5/64", 5/64", 3/16" 1/16", 1/16", 3/16" 1/16", 1/16", 3/16"
PISTON PIN LOCKS
Piston Pin (Spiral) Locks
Part No. Qty.
.990" x .042"
JEP990-042-CS 1 WISCS-25 4
.990" x .050"
SEALR261-16 16
JEP990-042-CS
PISTON RINGS - See Page 523-537 478 2021-22 ENGINE BUILDER CATALOG
WISCS-25