Series Aluminum Chevy Small Block
Series Aluminum small block Chevy Block, 350 mains, 9.025 deck,
4.000 cylinder bore, BBC cam
up to 455 cubic inches, a Dart aluminum block is ideal for sprint
cars, modifieds, late model stock cars, dragsters and unlimited
Standard 9.025" and tall deck 9.325" versions allow
for greater versatility.
Raised camshaft .391" (4.912" camshaft to crankshaft
centerlines) provides more clearance for stroker cranks and eliminates
need for fragile small base circle cams. Option for .434 raised
cam also available.
Relocated oil pan rails are spread .400" per side (.800"
wider than stock) to increase crank/rod clearance and reduce windage
Siamesed cylinders: Standard 4.000" or 4.125" cylinder
can be safely bored to 4.185". Extra thick walls prevent
cracking and produce excellent ring seal.
Oil pan bolt holes are relocated in line with main caps to eliminate
interference with rotating assembly.
Main bearing bores are available for 350 (2.45") and 400
(2.65") bearings allow engine builders to maximize crankshaft
strength and minimize friction.
4 bolt billet steel main caps have splayed outer bolts minimize
bearing bore distortion.
Big block camshaft bearings allow use of cams with larger base
circle diameter to improve strength and rescue twisting with cam
Dual starter mounts allow starter to be mounted on either side
of block for chassis and oil pan clearance.
Front and rear external oil inlets, crossover and restrictor provisions
to simplify plumbing with external pump.
Scalloped outer water jacket walls improve coolant flow around
the cylinder barrels to equalize temperatures.
Coated cam bearings, freeze plugs and dowels are included.
Dart blocks are available fully finish prepped.