Page 197 - 2021-22_EngineCatalogAP

CHEVROLET BIG BLOCK
Steel Main Caps - Cont.
Billet 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
Chevrolet Big Block 396-454
Caps
4-Bolt 4-Bolt 4-Bolt
Block
4-Bolt
2 and 4-Bolt Flat 2 and 4-Bolt Flat
PGEBB454C PGEBB454CFA PGEBB454F
Direct Rep. Main Caps (4) Splayed Center Caps (3) Front Cap
Stock
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
HRCH454 BBC Center Main Caps
PRW Billet Steel Main Bearing Caps
Part No. Description
Chevrolet Big Block 396-454
Caps
4-Bolt
Caps Block
4-Bolt 2-Bolt 4-Bolt 2-Bolt 4-Bolt 4-Bolt
Block
2-Bolt
Register
Stock Step Stock Step Stock Step
Register
Stock
PQX1745401 PQX1745402 PQX1745403
396-454 2-Bolt to 4-Bolt Block Conv. (4 Each) 396-454 2-Bolt to 4-Bolt Block Conv. (3 Each) 396-454 Splayed Center Caps (4 Each)
Chevrolet Big Block “W” 409 Engine
Eagle Forged Steel Crankshafts
“ESP” features SAE 4340 steel non-twist forging, multi-stage heat-treated, stress-relieved, .125" radii for use with narrowed bearings, chamfered oil holes, shot-peened, nitride hardened, X-rayed, magnafluxed, and sonic tested. Recommended for use up to 1500 HP.
Part No. Description
EAG440940026135 Standard Weight
Chevrolet Big Block
Eagle Cast Steel Crankshafts
Stroke
4.000"
Min. Rod Length 6.135"
Rod Rear
Pin Main Main Seal
2.200" 2.500" 2-Piece
Balance
Int.
Balance
Target Bobweight Grams 2350
Target Bobweight Grams
Approx. Weight Lbs. 70-78
Approx. Weight Lbs.
“ESP” features 092" radius on rod and main journals, rear seal and snout, compatibility with standard OEM-style bearings.
Part No.
EAG104544000 EAG104564000 EAG104544250 EAG104564250
Description
Early Style Late Style Early Style Late Style
Min. Rod Stroke Length
4.000" 6.135" 4.000" 6.285" 4.250" 6.385" 4.250" 6.385"
Rod Rear Pin Main Main Seal
2.200" 2.749" 2.200" 2.749" 2.200" 2.749" 2.200" 2.749"
2-Piece 1-Piece 2-Piece 1-Piece
Ext. 2440 65-67 Ext. 2420 65-67 Ext. 2420 65-67 Ext. 2420 65-67
Register
MAIN BEARING CAPS
CRANKSHAFTS
2021-22 ENGINE BUILDER CATALOG 195