For Sale: Dart Pro1 LS3 Heads, 6-Bolt (Bare

Also as CNC Ported, Fully Assembled to Suit



1545 Mound Road, Rockdale, IL View Map


Dart's long awaited 6-bolt LS3 heads have arrived! We here at Borowski Race Engines received the first set shipped, paired the heads with a Dart LS Next block and added nitrous. Engine Labs online magazine ran the story as a tech feature

Quoting the article": "By creating a cylinder head casting that performs like a ported design right out of the box, Dart has developed a serious advantage—especially when you take the price point of these cylinder heads into account, which Maskin says will hit the marketplace approximately $200 less per head than competing designs, while offering better performance."

LS3 Style cylinder head
Available Bare or Complete (call for options and pricing)
LS3 Exhaust port locations and bolt pattern
2.165-inch Intake Valve, 1.600-inch Exhaust Valve
RMR virgin heat treated 355-T61 cast aluminum material
280cc intake runners, 102cc exhaust runners
Accepts OEM or LS3 aftermarket intake manifolds
Accepts OEM or aftermarket LS3 valve-train
0.500-inch thick decks for stability in boosted and nitrous applications

Dart's all-new Pro1 LS3 cylinder head features the latest in port and combustion chamber design. The company's investment in casting and tooling capabilities allows them to produce a cylinder head design that is unrivaled in the market.

Assembled cylinder heads are available with 1.290-inch beehive or 1.295-inch dual valve springs to suit nearly any application. The valve seats feature a five-angle design for the intake valve and a three-angle design for the exhaust valves to promote excellent flow.

Cylinder heads work on LS and LS Next-style blocks with a four or six-bolt configuration for maximum clamping ability.
Racing inspired combustion chamber improves flame propagation and increases air flow.

Dart has designed these as-cast cylinder heads to perform like ported cylinder heads--maximizing performance and minimizing your investment.

Internal Borowski testing with these cylinder heads prove they are capable of well over 1,000 horsepower and 1,000 pound feet of torque.

Part Number 110300000-11030153
Material RMR virgin heat treated 355-T61 cast aluminum
Combustion Chambers 68cc
Intake Valve Diameter 2.165-inch
Intake Port Volume 280cc
Intake Port Dimensions Stock LS3 location and bolt pattern
Intake Port Location Stock LS3 location and bolt pattern
Intake Gasket OE or Fel-Pro LS3
Exhaust Valve Diameter 1.600-inch
Exhaust Port Volume 102cc
Exhaust Port Dimensions 1.750-inch x 1.550-inch
Exhaust Port Location Stock LS3 port location and pattern
Exhaust Gasket OE or Fel-Pro 1438
Flow, Intake 370 cfm @ .800-inch lift, 28” water
Flow, Exhaust 252 cfm @ .800-inch lift, 28” water


Not Accepted
Payment Options
Paypal, Money Order, Credit Card, Cash
Phone #
Message Seller

Ad #182536238
Expires on: 05/29/2017
Posted: 05/22/2017, ad expires in 1 days
From:    To: 
Message Seller
Business Information
Ad posted by:
BorowskiRace (#327877)

Borowski Race Engines, Inc.
1545 Mound Rd
Rockdale, IL 60436

Member Since: 10/23/2008
Phone Number: 877-678-6448

Enter Friend’s Email:
  • Member has no other classified ads.

Report the sale - click here
106 Main Street, North Adams, MA 01247
Toll Free: 866.326.9227 • Tel: 413.663.3496 • Fax: 413.663.3615 • Email:

Execution Stats: 0.195 sec / 8.8 MB used / 9.0 MB peak