MAIN CAP GIRDLES
PRW Steel Main Cap Girdles PRW Billet Steel Main Girdles are engineered to help eliminate the block flex and cap walk that occurs as a result of stress while under extreme loads, including nitrous oxide power bursts in high-performance engines. PRW main girdles are manufactured from premium 1045 billet steel. These kits include high-quality steel studs, spacers, and nuts (limited machining may be required for proper fitment). Part No. Description Chevrolet PQX0935000 350 Small Block Chevrolet PQX0940000 400 Small Block Chevrolet
PQX0935000
MAIN BEARING CAPS
Billlet Speedworks Billet Main Bearing Caps Billet main caps offer increased bottom end strength. Many of the billet caps listed are for converting a two-bolt main block to the more durable four-bolt main configuration. Part No. Description Caps Block Register Chevrolet Small Block 327-400 PGESB350F 327-350 Front Cap, Large Journal 2-Bolt 2 and 4-Bolt Stock Step PGESB400F 400 Front Cap 2-Bolt 2 and 4-Bolt Stock Step PGESB350CFS4 350 Center Caps, OEM Rep. 4-Bolt 4-Bolt Stock Step PGESP350C15S 350 Splayed Center Caps 4-Bolt 2-Bolt Stock Step PGESB350CFA 350 Splayed Center Caps 4-Bolt 2 and 4-Bolt Flat PGESB350CSA2 350 Splayed Center Caps 4-Bolt 2-Bolt Stock Step PGESB350CSA4 350 Splayed Center Caps 4-Bolt 4-Bolt Stock Step PGESB400CFA 400 Splayed Center Caps 4-Bolt 2-Bolt Flat PGESP400CSR 400 Center Caps Sportsman 4-Bolt 4-Bolt Stock Step PGESB400CSA 400 Splayed Center Caps 4-Bolt 2-Bolt Stock Step PGESB350RWS 350 Rear Main Cap, Wet Sump 2-Bolt 2 and 4-Bolt Stock Step PGESB350RWSL 350 Rear Main Cap, Wet Sump, 1-Pc. 2-Bolt 2 and 4-Bolt Stock PGESB400RWS 400 Rear Main Cap, Wet Sump 2-Bolt 2 and 4-Bolt Stock Step Steel Main Caps Ductile main caps use splayed outside bolts which pull from the side walls of the block instead of flimsy main web area. Main caps, bolts, washers, and a drill bushing are included in each kit. In addition to engines listed, main cap kits are available on a special order basis for many Chrysler, Oldsmobile, and Pontiac engines. Part No. Application Caps Block Register MIL11050 283-327 Small Block Chevrolet 4-Bolt 2 or 4-Bolt — MIL11150 350 Small Block Chevrolet 4-Bolt 2-Bolt only Narrow MIL11160 350 Small Block Chevrolet 4-Bolt 4-Bolt only 4.450" Wide MIL11180 400 Small Block Chevrolet 4-Bolt 2 or 4-Bolt 4.450" Wide PGESB350CFS4
MIL11050
Dart Main Caps Dart’s steel and ductile iron main caps are designed for maximum strength, stability, and balance. Part No. Application Caps Block Register DRT32731030H SBC Steel “Little M” 350 Mains, Interior Cap, Ea. 4-Bolt 4-Bolt Standard DRT32751030H SBC Ductile Iron “Little M” 350 Mains, Interior Cap, Ea. 4-Bolt 4-Bolt Standard
Howards Main Caps Billet main caps are CNC-machined from low-carbon 1020 material. They come available as stock replacements (straight bolt) or with splayed outer bolt holes. Splayed caps feature 10° angled outer holes to positively reinforce and tie the block together. Part No. Application Caps Block Register HRCH350F SBC Front Main Cap 2-Bolt 2 or 4-Bolt Stock HRCH350FS SBC Front Main Cap Support Strap — — — HRCH350RSWS SBC 350 Rear Main Cap Support Strap — — — HRCH350RWS SBC 350 Rear Main Cap - Wet Sump 2-Bolt 2 or 4-Bolt Stock HRCH350R SBC 350 Center Main Caps 4-Bolt 4-Bolt Stock HRCH350S SBC 350 Splayed Center Caps 4-Bolt 2-Bolt Stock HRCH350F
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2021-22 ENGINE BUILDER CATALOG
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