LS1 408 Engine Packages
Platinum Series Engine

Need more power?  A Darton Sleeved Aluminum block, Streetable 6.0 L Iron Block, or LS2 can power your “F” Body or Corvette into the VERY low 11’s at the Drag Strip.

 Need even more power??  Nitrous or turbo charging can make Streetable horsepower (750-1000) that will leave EVERBODY in the dust.  We take no shortcuts and use no off brand parts, and then we put YOUR  engine on the Dyno to certify the power. 

WE CARE ABOUT YOUR RESULTS!!!

Listed below are some of our standard engine configuration packages.  Please call 815-725-2727 to discuss a custom package.  Financing is available.  We will meet any advertised price if you provide a written quote specifying the parts included the parts manufacturer and the machine work performed.

Borowski Race Enterprises
Call 815-725-2727 for other packages not shown

Callies Crank & Rods, Diamond Pistons, Cloyes Timing Set, ARP Studs,
(Twin Turbo Application)

LS1 422 – 440 CID Big Bore

Application: Naturally Aspirated / NO2 / Blower / Turbo
* 427ci with 4.120” Bore is for Naturally Aspirated Application Only.

Darton Sleeved LS1 or LS2 Aluminum Block

4.100” – 4.120” Bore x 4.000” Stroke

Lunati/Callies Crankshaft

Lunati/Callies Connecting Rods - 6.125” Length

Custom Diamond/JE Forged Pistons

Diamond File Fit Ring Set

Clevite Bearings

Custom Cam

Cloyes / Rollmaster Roller Timing Chain

GM Modified Oil Pump

Fully Balanced Rotating Assembly

Engine Fully Clearanced

ARP Main Studs

Cylinder Heads

5 Angle Valve Job

Custom Manley Valves

Comp Double Valve Springs

Titanium Retainers

Full Competition Race Port and Polish Intake / Exhaust Ports

Fully CNC Ports & Chambers then Hand Finish to Equalize Airflow

Unshroud Combustion Chamber

Hardened Valve Seats

Bronze Valve Guides

Viton Valve Seals

Set Combustion Chamber CC

Set Valve Spring Pressures and Heights

Flow Test

Price: Call for Competitive Pricing Includes Dyno Certified & Leak Checked

Darton Sleeved Blocks To 440 Cubic Inches

LS1 Aluminum 347 CID Long Block ( 500 h.p. +)

Application: Stock replacement / Up to 8# Boost / Heads and Cam / 150 Long Block H.P. NO2

3.905” Bore x 3.622” Stroke

Refinished & Magnafluxed Factory GM Crankshaft with Radiused Oil Holes

Crower On-Center Rods

Diamond/JE Forged Pistons

File Fit Ring Set

Clevite Bearings

Cloyes / Rollmaster Roller Timing Chain

GM Modified Oil Pump

Fully Balanced Rotating Assembly

Engine Fully Clearanced

Cylinder Heads

3 Angle Valve Job

Comp Cams Valve Springs

Factory Locks and Retainers

Port and Polish Intake / Exhaust

Viton Valve Seals

C.C. Cylinder Heads

Set Valve Spring Pressures and Heights

Flow Test

Pushrods /  Lifters

Price: Call for Competitive Pricing Includes Dyno Certified & Leak Checked

ARP Head Studs

ARP Main Studs

Assembled Short Blocks Available

LS1 408 Twin Turbo

402-408 LS1 Engine Assembly (Short/Long Block Assembly) Low or High Compression The Borowski 402 uses the GM LQ9 6.0 liter block (or LS2 Aluminum), a 4.00" forged steel crank, and 4.00" - 4.030” forged aluminum pistons. This package is sold, minus manifolds, camshaft, oil pump, and other equipment. You can choose the combination best for you. We can provide the heads and cam, and we’d be happy to recommend the best combination and build it for you. Normally aspirated this engine will develop over 575 horsepower.   You won’t find a higher-quality, better value LS1 stroker motor anywhere! Features 4.000" Eagle 4340 forged steel crankshaft, balanced to rotating assembly 4.000" – 4.030” Diamond forged alloy pistons (includes new rings and full-float pins) 402 – 409 CID Eagle 6.125" H-beam rods Includes new Clevite “H” rod and main bearings You specify the compression ratio (from 9.0:1 to 12.0:1) Capable of supporting up to 700hp Meticulously assembled AND Q.C. CHECKED to OEM tolerances and specifications. Oil pump, timing chain, camshaft, pans, plates, and covers not included. Price: Call for Competitive Pricing Financing available through First Midwest Bank 90 days same as cash Optional 1/2" Head Stud Installation

Cylinder-Head-and-Cam Package LS1 / LS6

Borowski’s LS1/LS6 top-end package offers substantial increases in horsepower and torque from a naturally aspirated stock-displacement engine. Call our technical sales representatives at (815) 725-2727 for more information on this performance package.

Borowski Stage II LS6-Style Cylinder Heads

Ported and blended chambers, ports, and bowls
Swirl-polished 2.02"/1.57" stainless steel valves
LS6 Intake flows 320cfm / LS1 Intake flows 290cfm
Radius exhaust seats
High-performance, multi-angle valve job (Serdi)
Heavy-duty dual valve springs
Titanium valve-spring retainers
Resurface heads to desired compression and CC
Set all valve spring pressures and heights
Flow test with print out
Heavy-duty valve locks

Borowski High-Performance Camshaft Engineered to provide the best possible combination of performance and drivability.

NOTES

• Some applications will require new pushrods.
• 1997-1998 models require LS6 cylinder-head conversion.
• For off-road use only.

Price: Call for Competitive Pricing

SuperFlow Flow Bench

402-408 LS1 Rotating Assembly

For those who wish to supply their own engine block.  We offer our 6.0L stroker kits. They incorporate the same top-quality components as our short-block assemblies, all for the lowest prices on the market.  We can also perform the machine work and assembly IN HOUSE using your serviceable core!  

4.000" Eagle 4340 forged steel crankshaft, balanced to rotating assembly
4.000” – 4.030" Diamond forged alloy pistons (includes new rings and full-float pin)
Eagle 6.125" H-beam rods
402-409 CID
9.0:1 - 12.0:1 compression ratio
Designed for naturally aspirated, nitrous, or turbo applications
Includes new Clevite “H” rod and crank main bearings

Options:

Crower or Callies Components

This item must be prepaid with a certified check or money order.
Please call 815-725-2727 for more information.

Borowski Race Enterprises
Call 815-725-2727 for other packages not shown

Part Number Description Price   Eagle Rotating Assemblies - Strokes 3.622 thru 4.100 Available JE Pistons & Clevite Bearings   Call Today   Balanced Eagle Rotating Assemblies - Strokes 3.622 thru 4.100 Available JE Pistons & Clevite Bearings   Call Today   CF4081BK Stage 1 Balanced Rotating Kit - Callies 4340 Crankshaft 4.00" Stroke (3.622/4.125 Available), Callies Rods 6.125", Diamond Forged Pistons (3.905/4.030 Bore) (Dished Pistons Available) & Plasma Moly Rings, Clevite Rod & Main Bearings, Computer Balanced Call Today

Borowski Race Enterprises
Call 815-725-2727 for other packages not shown