The BMW S65 is already a legendary platform--engineered by BMW's dedicated motorsport engineers and engine builders as a high-revving, naturally aspirated V8 with exceptional capability right out of the box.
What separates a VAC-built S65 from the rest isn't potential--it's reliability, longevity, and execution.
The VAC NA S65 476HP Engine Package takes BMW's proven foundation and elevates it through precision machining, engineered clearances, and disciplined assembly practices developed over decades of race-winning experience. The result is a naturally aspirated S65 that delivers repeatable power on pump gas, with the durability required to win races--and keep customers loyal.
VAC engines are winning races in SCCA, NASA, and BMW CCA Club Racing, as well as rally, hill climb, and vintage racing around the world, because they last.
ENGINE PACKAGE HIGHLIGHTS
-
476 HP naturally aspirated on pump gas
-
BMW S65 platform, refined by VAC, supplied by Customer
-
Precision-machined flanged sleeved block
-
Fully forged rotating assembly
-
VAC Stage 1 Performance Cylinder Heads
-
Built, balanced, and assembled in-house by VAC Motorsports
-
Designed for street, track, endurance, and competitive racing
WHAT'S INCLUDED - DETAILED LINE ITEMS
BLOCK, ROTATING ASSEMBLY & INTERNALS
VAC-FCS-S65-G1
VAC Flanged Cylinder Sleeve Set - S65 (92-92.5mm)
Precision flanged sleeves installed to increase cylinder strength, stability, and long-term durability--especially critical for sustained high-RPM naturally aspirated operation.
$1,439.95
CP-FPS-S65-92.5-12
CP Forged Piston Set - S65, 92.5mm, 12:1 Compression
Forged pistons optimized for naturally aspirated performance, thermal stability, and pump gas reliability.
$1,799.95
CP-U-Coat-Skirt
CP Teflon Skirt Coating (8 pistons)
Reduces friction, improves cold-start wear characteristics, and extends piston life under race conditions.
$320.00
SP-CRS-S65
SP Connecting Rod Set - S65, Standard Length
High-strength forged rods designed for sustained high-RPM and endurance use.
$1,599.95
VAC-HPMBS-S65
VAC High Performance Main Bearing Set - S65
Engineered bearing clearances tailored for durability and consistent oil control.
$599.95
VAC-HPRBS-S65-X
VAC High Performance Rod Bearing Set - S65 (Extra Clearance)
Designed for high-load, high-RPM naturally aspirated builds that see real track time.
$559.95
FASTENERS, GASKETS & TIMING COMPONENTS
(unchanged)
CYLINDER HEADS & MACHINING
VAC-S1PCH-S65
VAC Stage 1 Performance Cylinder Heads - BMW S65
The VAC Stage 1 Performance Cylinder Head is a precision OEM-plus solution designed to improve durability, valve stability, and sealing accuracy while retaining BMW's original port geometry.
Stage 1 is ideal for naturally aspirated S65 builds where longevity and consistency matter more than peak airflow numbers--making it the correct choice for endurance racing, HPDE, and street-driven performance cars.
All Stage 1 cylinder heads are machined, assembled, and quality-controlled in-house at VAC Motorsports.
Stage 1 Includes:
-
New valve guides (all positions)
-
New valve seals
-
Precision multi-angle performance valve job
-
Resurfaced cylinder head mating surface
-
Complete cylinder head assembly, ready for installation
$2,100.00
LABOR & ASSEMBLY
LAB-11-CER-8-4V
BMW "All Aluminum" V8 Engine Rebuild Labor
Full teardown, inspection, machining prep, rotating assembly, cylinder head installation, timing, and final assembly--performed entirely in-house.
$8,995.00
LAB-11-BC-V-8
Crankshaft Balancing - V8
Precision balancing ensures smooth operation and long-term reliability at sustained high RPM.
$499.95
CREDITS & ADJUSTMENTS (APPLIED)
TOTAL ENGINE PACKAGE INVESTMENT
$21,589.03
(Naturally Aspirated undefined Pump Gas undefined 476 HP)
Sales tax not included. Pricing subject to change based on configuration or optional upgrades. Customer Supplied Engine
WHY VAC ENGINES WIN
BMW built the S65 to be capable.
VAC builds it to last.
Our engines are trusted worldwide because they combine BMW's engineering with VAC's obsessive attention to machining accuracy, oil control, clearances, and assembly discipline. That's why VAC-built engines continue to win races across multiple disciplines--and why customers come back build after build.
WHO THIS PACKAGE IS FOR
-
BMW E9X M3 owners seeking maximum naturally aspirated performance
-
Track-day, endurance, and club racing competitors
-
Drivers who value throttle response, durability, and consistency
-
Customers who want VAC-level execution--not shortcuts
OPTIONAL UPGRADES
-
Performance camshafts
-
Intake and exhaust optimization
-
ECU calibration
-
Stage 2 or Stage 3 cylinder heads
-
Future forced-induction readiness
READY TO BUILD YOUR S65 THE RIGHT WAY?
Contact VAC Motorsports to discuss lead time, options, and scheduling.
Built in-house. Proven on track. Trusted worldwide.