Build a 415 or 427 small block, or a big 454-incher with maximum ease by using a complete short block assembly. Starting with a race-prepped World MOTOWN II block and top quality components, experienced technicians individually assemble each short block to exacting standards. Add your own heads, cam and intake system.
Want to put it together yourself? Our short block assemblies are also available as kits! You'll get a race-prepped block, a digitally balanced rotating assembly and the satisfaction of knowing you built it yourself!
TECHNICAL SPECS
Deck Height: 9.025”
Bore/Stroke: 4.125" x 3.875" (415), 4.125” x 4.000” (427), 4.250" x 4.000" (454)
Main Caps: 4-bolt nodular splayed
Crankshaft: 4340 Eagle/Scat internally balanced
Connecting Rods: 4340 Eagle/Scat
Pistons: Manley/Mahle
Piston Rings: Total Seal
Main Bearings: Clevite H Series
Internal Hardware: ARP
Compression Ratios (calculated with 64cc combustion chamber head, .041" gasket, and piston dome as indicated)
415 Street: 9.7:1, -20cc dome
415 Race: 13.6:1, 10cc dome
427 Street: 10.1:1, -20cc dome
427 Race: 13.6:1, 8cc dome
454 Street: 11.1:1, -12cc dome
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