Dart's LS Next blocks are a big jump over their OE counterparts. Their features outlined down below allow them to reliably handle far more power. The aluminum LS Next blocks carry a significant price premium over their iron counterparts but offer substantial benefits. They weigh 100 lbs less and cool far better than iron. The weight reduction shifts also shifts the vehicle's center of gravity. This noticeably affects steering, braking and launch. The downside is that iron blocks are stronger.
LS Next Features:
- Dart priority main oiling system with provisions for stock oil filter mounting.
- Siamesed cylinder bores with thick walls.
- Cylinder barrels extended 0.375" at the bottom of the bores relative to OEM.
- Thick decks ensure reliable head gasket seal.
- Blind head bolt holes.
- 6 bolt per cylinder capability.
- Scalloped water jackets increase flow around cylinders for better cooling.
- Splayed outer bolts on middle main bearing caps.
- Provisions for LSX roller lifters and cam.
- Uses OE front and rear covers.
- All OE bolt holes for starter, water pump, etc.
- Parts kit sold separately
Specifications from Dart
- Deck Height: 9.240" (Stock), 9.450", 9.750"
- Cylinder Bores: 4.000", 4,125"
- Main Bearings Size: Stock LS
- Main Caps: Steel 4-Bolt
- Cam Location: Stock or Raised 0.388"
- Lifter Bores: Stock .842" Diameter
We can supply these blocks as-received from Dart, or fully machined by us at our all-CNC shop. The fully machined option gives you a precision-machined, assembly-ready, painted block with cam bearings and oil galley plugs installed. It doesn't end there. How about available upgrades like piston oilers or provisions for 1/2" head studs? Thinking you need more? Dart's LS Next2 block comes with 1/2" main studs with either 2.55 or 2.75 inch main journals.
Give us a call at 815-725-2727 to discuss your needs from parts to complete crate engines and everything in between.
Note: Our Purchase Order for standard deck blocks was entered in February, so we are at the front of the line. Please place your order now if you want assured delivery. We should be able to amend our PO to substitute tall decks without losing our place in line if that is what you want.
Can't wait? We have RHS aluminum LS blocks in stock.
BUY YOUR PARTS FROM PEOPLE WHO USE THEM!
