LS NEXT BLOCK – 4.125″ BORE 9.240″ DECK, CAST IRON

Description

Dart’s LS Next block isthe first significant change in the architecture of the LS engine platform. By eliminating the “Y-block”design and utilizing conventional style main caps and oil pans, Dart has addressed the problems resulting from the LS engine’s separated crankcasebays. Windage is greatly reduced, resulting in increased power along with a much stronger main web area.
Features:
Dart’sLS Next block is cast in the USA with premium cast iron alloy
Conventional style 4-bolt steel main caps with 7/16” bolts are used
Full main webbingfor maximum bottom end strength
Cylinder barrels are extended by .375” at the bottom, providing greater piston support for all combinations
9.240”deck height, with options of 9.450″ are available which allows for a possible effective barrel length of 9.825” deck block
Extra thick Siamese cylinder bores allow for large displacement capacity, and a max bore size of at least 4.200”
A5/8” thick full deck designwith a 9.240” deck height
Six head bolts per cylinder provide secure clamping for power adder applications
Head bolts are upgraded to 7/16”for increased strength
Blind head bolt holes don’t go throughinto the water jacket
Provision for oil restrictors in the lifter valley
Revised low restriction priority main oiling system
Pro-Stock / Pro-Mod big block style stepped main oil galley
An external oilfilter must be used with stockor aftermarket oil pumps
Dual starter mounts
The water jacket on the #1 cylinder has been expanded for additional cooling capacity
LSX style lifter bosses and dog bone provision are provided
Moroso oil pan suit DART LS NEXT BLOCK
MO20144
Oil pickup suit DART LS NEXT BLOCK
MO24144