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Promar High Performance Crate
Engines |
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We offer a complete line
of High Performance Crate and custom engines. Our
Crate engines are designed for increased horsepower
and torque with a price that won’t empty your
wallet. If you need more serious performance or are
looking for something specific just give us a call
to quote you a custom performance engine build.
We offer several levels of performance engines.
High Output: Moderate performance increase
from stock.
Stroker: Bigger cubic inch and performance
without the cost of a racing engine
Street/Strip: Stroker with forged internals
for increased strength.
Racing: Big cubic inch, High Compression, and
Forged Internals. High HP and Torque output.
Marine Performance: Big cubic inch Marine
engines for more HP and Lots of Torque.
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Click Here To View
Our High Performance Website
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High
Performance Engine Packages
350HP 350CI Small Block Chevy w/ Vortec Heads
340HP 420 ft/lbs Torque 383CI Stroker Small Block Chevy for 96-99 Vin R
405HP 450 ft/lbs Torque 383CI Stroker Small Block Chevy w/ Cast Iron Heads
415HP 440 ft/lbs Torque 383CI Stroker Small Block Chevy w/ Aluminum Heads
430HP 450 ft/lbs Torque 383CI Stroker Small Block Chevy w/ Cast Iron Heads
370HP 347CI Stroker Small Block Ford Double Hump Pan w/ Cast Iron Heads
370HP 347CI Stroker Small Block Ford Front Sump w/ Cast Iron Heads
420HP 460TQ 408CI Stroker Windsor Alum Heads Double Sump For 79-95 Mustang
420HP 460TQ 408CI Stroker Windsor Cast Heads Double Sump For 79-95 Mustang
420HP 460TQ 408CI Stroker Windsor Cast Heads Front Sump
420HP 460TQ 408CI Stroker Windsor Aluminum Heads Front Sump
420HP 460TQ 408CI Stroker Windsor Cast Heads Rear Sump
320HP 390TQ 5.0 Modular OHC Ford
240HP 320 ft/lbs Torque 4.6 Jeep Stroker Engine
600HP 700TQ 540CI Big Block Chevy
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350HP
350CI Small Block Chevy w/ Vortec Heads
Block
Bored and honed with torque plate
One piece rear main seal 4 bolt main
Premium core max .040 bore. No repairs. No sleeves
Cylinder Heads
New Vortec Heads 1.94 Int 1.50 170 cc int runners
Adjustable rockers with screw in studs
7 degree hardened locks and chrome Moly retainers
New Stainless Performance Valves
High Performance Springs
3 angle competition valve job
Valve Train
HP Cam 224/224@.050" .450/.461 Valve Lift 114/114
Lobe Separation
High Intensity Lifters.
True Double Roller timing chain..
1.5 ratio rockers
Rotating Assembly
Hypereutectic coated flat top pistons 9.5:1 C.R.
OEM rods with ARP rod bolts
10/10 OEM crankshaft
Externally Balanced
Intake and Tinware
Professional Products Crosswind Vortec Manifold
Professional Products 8 in Harmonic Balancer
OEM Oil Pan
Chrome Valve covers
Timing cover
Flex Plate
Assembled with all grade 8 hardware.No Core
Return Required
Cost: $2999 |
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340HP 420 ft/lbs Torque 383CI
Stroker Small Block Chevy (replacement for 96-99 Vin R)
Block
Bored and honed with torque plate
One piece rear main seal 4 bolt main 880 casting
Premium core max .040 bore. No repairs. No sleeves
Cylinder Heads
New Vortec Heads 1.94 Int 1.50 170 cc int runners
7 degree hardened locks and chrome Moly retainers
New Stainless Performance Valves
High Performance Springs
3 angle competition valve job
Valve Train
Roller Cam 196/206 431/451 GM performance
New Roller Lifters
True Double Roller timing chain
1.5 adjustable rockers
Screw in studs
Rotating Assembly
Speed Pro Hypereutectic coated pistons 9.2:1 C.R.
Powder metal rods w/ ARP rod bolts
Scat 3.750 Stroke Cast Steel Crank
Balanced rotating assembly within 1 Gram
Moly Rings
Externally Balanced
OE front cover suppliedCore return must be 880 block with 906 heads
Cost: $3099 |
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405HP
450 ft/lbs Torque 383CI Stroker Small Block Chevy w/ Cast Iron
Heads
Block
Bored and honed with torque plate
One piece rear main seal 4 bolt main
Premium core max .040 bore. No repairs. No sleeves
Cylinder Heads
Dart S/S Cast Iron 23 deg Heads 2.02 Int / 1.60 Exh
165cc runners 72cc chamber
7 degree hardened locks and chrome Moly retainers
New Stainless Performance Valves
High Performance Springs
3 angle competition valve job
ARP Performance Head Bolts
Valve Train
HP Cam 234/244dur@50 deg 488/509 Valve Lift 107/117
Lobe Separation
High Intensity Lifters.
True Double Roller timing chain
Scorpion Roller Rockers 1.5
Screw in studs and guide plates
Rotating Assembly
Speed Pro Hypereutectic coated pistons 9.5:1 C.R.
Eagle I Beam Connecting Rods w/ ARP rod bolts
Scat 3.750 Stroke Cast Steel Crank
Balanced rotating assembly within 1 Gram
Moly Rings
Externally Balanced
Intake and Tinware
Professional Products Crosswind Manifold
Professional Products 8 in Harmonic Balancer
OEM Oil Pan
Polished Alum Valve Covers
OEM Timing cover
OEM Flex Plate
Assembled with all grade 8 hardware.No Core
Return Required
Cost: $4199 |
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415HP 440 ft/lbs Torque 383CI
Stroker Small Block Chevy w/ Aluminum
Heads
Block
Bored and honed with torque plate
One piece rear main seal 4 bolt main
Premium core max .040 bore. No repairs. No sleeves
Cylinder Heads
ProComp Aluminum 23 deg. Heads 2.02 Int / 1.60 Exh
190cc runners
7 degree hardened locks and chrome Moly retainers
New Stainless Performance Valves
High Performance Springs
3 angle competition valve job
ARP Performance Head Bolts
Valve Train
Cam 234/244dur@50 deg 488/509 Valve Lift 107/117
Lobe Separation
High Intensity Lifters.
True Double Roller timing chain
Scorpion Roller Rockers 1.5
Screw in studs and guide plates
Rotating Assembly
Speed Pro Hypereutectic coated pistons 9.5:1 C.R.
Eagle I Beam Connecting Rods w/ ARP rod bolts
Scat 3.750 Stroke Cast Steel Crank
Balanced rotating assembly within 1 Gram
Moly Rings
Externally Balanced
Intake and Tinware
Professional Products Crosswind Manifold
Professional Products 8 in Harmonic Balancer
OEM Oil Pan
Polished Alum Valve Covers
OEM Timing cover
OEM Flex Plate
Assembled with all grade 8 hardware.No Core
Return Required
Cost: $4199 |
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430HP 450 ft/lbs Torque 383CI
Stroker Small Block Chevy w/ Cast Iron Heads
Block
Bored and honed with torque plate
One piece rear main seal 4 bolt main
Premium core max .040 bore. No repairs. No sleeves
Cylinder Heads
New World Products Sportsman II Heads 2.02 int /
1.60 exh valves
7 degree hardened locks and chrome Moly retainers
New Stainless Performance Valves
High Performance Springs
3 angle competition valve job
ARP Performance Head Bolts
Valve Train
HP Cam 246/246dur@50 deg 509/509 Valve Lift 106/112
Lobe Separation
High Intensity Lifters.
True Double Roller .250 timing chain
Scorpion Roller Rockers 1.5
Screw in studs and guide plates
Rotating Assembly
Keith Black FORGED Pistons 10.3 C.R. 92 octane and
heigher
Eagle I Beam Full Floating Connecting Rods w/ ARP
rod bolts
Scat 3.750 Stroke Cast Steel Crank
Balanced rotating assembly within 1 Gram
Moly Powerforged Rings
Externally Balanced
Intake and Tinware
Professional Products Crosswind Manifold
Professional Products 8 in Harmonic Balancer
OEM Oil Pan
Polished Alum Valve Covers
OEM Timing cover
OEM Flex Plate
Assembled with all grade 8 hardware.No Core
Return Required
Cost: $4499 |
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370HP 347CI
Stroker Small Block Ford Double Hump Pan w/ Cast Iron Heads
Block
Bored and honed with torque plate
One piece rear main seal 4 bolt main
Premium core max .040 bore. No repairs. No sleeves
Cylinder Heads
New World Products Sportsman II Heads 2.02 int /
1.60 exh valves
7 degree hardened locks and chrome Moly retainers
New Stainless Performance Valves
High Performance Springs
3 angle competition valve job
Valve Train
HP Cam 230/230@50 deg 512/512 lift 110/110
separation
High Performance lifters
True Double Roller timing chain
Scorpion Roller Rockers 1.6
Screw in studs and guide plates
Hardened Push Rods
Rotating Assembly
Keith Black Hypereutectic Pistons 10:1 C.R. 92
octane and higher
Scat I Beam Full Floating Connecting Rods w/ ARP rod
bolts
Scat 3.400 Stroke 9000 series stroker Crank
Balanced rotating assembly within 1 Gram
Hastings Powerforged Moly Rings
Externally Balanced
Intake and Tinware
Professional Products Dual Plane Crosswind Manifold
1500-6500 rpm usage
Professional Products Harmonic Balancer 28 oz.
OEM Double Hump Oil Pan
Chrome Valve Covers
OEM Aluminum Timing cover
OEM Flex Plate
Assembled with all grade 8 hardware.No Core
Return Required
Cost: $4999 |
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370HP 347CI
Stroker Small Block Ford Front Sump w/ Cast Iron Heads
Block
Bored and honed with torque plate
One piece rear main seal 4 bolt main
Premium core max .040 bore. No repairs. No sleeves
Cylinder Heads
New World Products Sportsman II Heads 2.02 int /
1.60 exh valves
7 degree hardened locks and chrome Moly retainers
New Stainless Performance Valves
High Performance Springs
3 angle competition valve job
Valve Train
HP Cam 230/230@50 deg 512/512 lift 110/110
separation
High Performance lifters
True Double Roller timing chain
Scorpion Roller Rockers 1.6
Screw in studs and guide plates
Hardened Push Rods
Rotating Assembly
Keith Black Hypereutectic Pistons 10:1 C.R. 92
octane and higher
Scat I Beam Full Floating Connecting Rods w/ ARP rod
bolts
Scat 3.400 Stroke 9000 series stroker Crank
Balanced rotating assembly within 1 Gram
Hastings Powerforged Moly Rings
Externally Balanced
Intake and Tinware
Professional Products Dual Plane Crosswind Manifold
1500-6500 rpm usage
Professional Products Harmonic Balancer 28 oz.
OEM Front Sump Oil Pan
Chrome Valve Covers
OEM Aluminum Timing cover
OEM Flex Plate
Assembled with all grade 8 hardware.No Core
Return Required
Cost: $4999 |
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420HP 460TQ 408CI
Stroker Windsor Aluminum Heads Double Sump For 79-95 Mustang
Block
Bored and honed with torque plate
1 Pc seal design
Premium core max .040 bore. No repairs. No sleeves
Cylinder Heads
ProComp Aluminum Heads w 215cc runners
7 deg hardened locks and retainers
2.02 int 1.60 exh Stainless valves
1.260 O.D. Performance springs
3 angle competition valve job
ARP Head Bolts
Valve Train
Cam Specs 230/230 @ 050deg 512/512 Lift 106/114 Sep
HP flat hydraulic lifters.
True Double Roller timing chain
Scorpion Roller Rockers 1.6 ratio
Screw in studs and Hardened guide plates
Rotating Assembly
Keith Black Hyperutectic Pistons
Eagle Fordged Steel Rods w/ ARP rod Bolts bushed
Scat Pro Comp Light weight stroker crank
Balanced rotating assembly within 1 Gram
Moly Rings
External Balance
Intake and Tinware
Professional Products Dual plane Manifold
Professional Products Damper 28oz
Canton Street/Strip oil Pan and sump for rear sump
mustang
Tall Chrome Valve Covers
Aluminum timing cover for v belt or serpentine
28 oz OEM flex plate
Assembled with all grade 8 hardware.No Core
Return Required
Cost: $5699 |
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420HP 460TQ 408CI
Stroker Windsor Cast Heads Double Sump For 79-95 Mustang
Block
Bored and honed with torque plate
1 Pc seal design
Premium core max .040 bore. No repairs. No sleeves
Cylinder Heads
World Products Roush cast iron heads w/ 200cc
runners
7 deg hardened locks and retainers
2.02 int 1.60 exh Stainless valves
1.260 O.D. Performance springs
3 angle competition valve job
ARP Head bolts
Valve Train
Cam Specs 230/230 @ 050deg 512/512 Lift 106/114 Sep
HP flat hydraulic lifters.
True Double Roller timing chain
Scorpion Roller Rockers 1.6 ratio
Screw in studs and Hardened guide plates
Rotating Assembly
Keith Black Hyperutectic Pistons
Eagle Fordged Steel Rods w/ ARP rod Bolts bushed
Scat Pro Comp Light weight stroker crank
Balanced rotating assembly within 1 Gram
Moly Rings
External Balance
Intake and Tinware
Professional Products Dual plane Manifold
Professional Products Damper 28oz
Canton Street/Strip oil Pan and sump for rear sump
mustang
Tall Chrome Valve Covers
Aluminum timing cover for v belt or serpentine
28 oz OEM flex plate
Assembled with all grade 8 hardware.No Core
Return Required
Cost: $5899 |
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420HP 460TQ 408CI
Stroker Windsor Cast Heads
Front Sump
Block
Bored and honed with torque plate
1 Pc seal design
Premium core max .040 bore. No repairs. No sleeves
Cylinder Heads
World Products Roush 200cc runner cast iron heads
7 deg hardened locks and retainers
2.02 int 1.60 exh Stainless valves
1.260 O.D. Performance springs
3 angle competition valve job
ARP Head Bolts
Valve Train
Cam Specs 230/230 @ 050deg 512/512 Lift 106/114 Sep
HP flat hydraulic lifters.
True Double Roller timing chain
Scorpion Roller Rockers 1.6 ratio
Screw in studs and Hardened guide plates
Rotating Assembly
Keith Black Hyperutectic Pistons
Eagle Fordged Steel Rods w/ ARP rod Bolts bushed
Scat Pro Comp Light weight stroker crank
Balanced rotating assembly within 1 Gram
Moly Rings
External Balance
Intake and Tinware
Professional Products Dual plane Manifold
Professional Products Damper 28oz
OEM Front sump Pan
Tall Chrome Valve Covers
Aluminum universal timing cover for v belt
28 oz OEM flex plate
Assembled with all grade 8 hardware.No Core
Return Required
Cost: $5699 |
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420HP 460TQ 408CI
Stroker Windsor Aluminum Heads
Front Sump
Block
Bored and honed with torque plate
1 Pc seal design
Premium core max .040 bore. No repairs. No sleeves
Cylinder Heads
ProComp Aluminum Heads w 215cc runners
7 deg hardened locks and retainers
2.02 int 1.60 exh Stainless valves
1.260 O.D. Performance springs
3 angle competition valve job
ARP Head Bolts
Valve Train
Cam Specs 230/230 @ 050deg 512/512 Lift 106/114 Sep
HP flat hydraulic lifters.
True Double Roller timing chain
Scorpion Roller Rockers 1.6 ratio
Screw in studs and Hardened guide plates
Rotating Assembly
Keith Black Hyperutectic Pistons
Eagle Fordged Steel Rods w/ ARP rod Bolts bushed
Scat Pro Comp Light weight stroker crank
Balanced rotating assembly within 1 Gram
Moly Rings
External Balance
Intake and Tinware
Professional Products Dual plane Manifold
Professional Products Damper 28oz
OEM Front sump Pan
Tall Chrome Valve Covers
Aluminum universal timing cover for v belt
28 oz OEM flex plate
Assembled with all grade 8 hardware.No Core
Return Required
Cost: $5599 |
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420HP 460TQ 408CI
Stroker Windsor Cast Heads Rear Sump
Block
Bored and honed with torque plate
1 Pc seal design
Premium core max .040 bore. No repairs. No sleeves
Cylinder Heads
World Products Roush 200cc runner cast iron heads
7 deg hardened locks and retainers
2.02 int 1.60 exh Stainless valves
1.260 O.D. Performance springs
3 angle competition valve job
ARP Head Bolts
Valve Train
Cam Specs 230/230 @ 050deg 512/512 Lift 106/114 Sep
HP flat hydraulic lifters.
True Double Roller timing chain
Scorpion Roller Rockers 1.6 ratio
Screw in studs and Hardened guide plates
Rotating Assembly
Keith Black Hyperutectic Pistons
Eagle Fordged Steel Rods w/ ARP rod Bolts bushed
Scat Pro Comp Light weight stroker crank
Balanced rotating assembly within 1 Gram
Moly Rings
External Balance
Intake and Tinware
Professional Products Dual plane Manifold
Professional Products Damper 28oz
OEM Rear sump Pan w/ dip provision in pan for early
and late truck
Tall Chrome Valve Covers
Aluminum timing cover for v belt or Serpentine
28 oz OEM flex plate
Assembled with all grade 8 hardware.No Core
Return Required
Cost: $5699 |
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320HP 390TQ 5.0 Modular OHC Ford
Block
Bored and honed with torque plate
4.6 Based Modular V8 For 95-06 Mustang SOHC 2v with
use of PI intake
Premium core max .030 bore. No repairs. No sleeves
Cylinder Heads
Power Improved OHC Heads 51cc chambers
New Valves 1.780/1.450
HP springs for .550 lift
3 angle competition valve job
Valve Train
Comp Cams 226/230 550/550 113
New OE Lifters
New Timing Chain Assembly
Roller Followers
Rotating Assembly
Diamond Racing Pistons 10.5:1
Manley H Beam forged Rods
4340 Forged Steel 3.750 Stroke Crank
Balanced rotating assembly within 1 Gram
Diamond Racing Piston Rings
Internal Balance
OE 8 Bolt Flex Plate
No Core
Return Required
Cost: $6699
Note: Customer must reuse existing
Tinware, Front Cover and Balancer along with a PI
intake to complete installation
Computer Upgrade Will Be needed for Use.
Minimum 92 Octane Fuel |
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240HP 320 ft/lbs Torque 4.6 Jeep Stroker Engine
Block
Bored and honed to exacting tolerances
4.0 L Block Any year
Premium core max .040 bore. No repairs. No sleeves
Cylinder Heads
OE 4.0 Head
OE locks and retainers
OE valves
HP springs
3 angle competition valve job
Valve Train
Comp Cam
OE lifters
True Roller timing chain
OE Rockers
Rotating Assembly
Pistons Hyperutectic Coated Pistons 9.6:1
OE Rods w/ ARP rod bolts
OE crank
Moly Low tension Rings
No Core
Return Required
Cost: $2849
Note: Customer must reuse existing
Tinware. Please specify Year and Model when
ordering. |
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600HP 700TQ 540CI Big Block Chevy
Marine Engine
Block
NEW Dart BIG M Block 4.500 bore
4 bolt main 2 pc seal design
Cylinder Heads
World Products Rectangular port heads 320cc intake
runners
Chrome Moly locks and retainers
Stainless Valves 2.300 intake 1.88 exhaust
HP springs Springs to handle 650 lift
3 angle competition valve job
Valve Train
Crane Hyd Roller Cam 610/632 lift 234/242 107/117
Crane Hyd Roller lifters
True Double Roller timing chain
Scorpion Aluminum Roller Rockers 1.7 ratio
Hardened studs and plates
Rotating Assembly
J&E Forged Pistons
H beam rods
4340 Forged Steel Crank 4.250 stroke
Balanced rotating assembly within 1 Gram
Hastings Plasma Moly Rings
Clevite Bearings
Intake and Tinware
World Marine Intake w 4500 base
Professional Products Balancer
Canton 10qt marine offshore pan
Chrome tall valve covers
New OE style timing cover
New OE Style Flywheel
Assembled with all grade 8 hardware.
Holley 850 cfm marine carburetor
Mallory Marine Distributor
Accel Plug wires
Champion Spark Plugs
Airtex Water PumpNo Core
Return Required
Cost: $12999 |
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| High Performance Testimonials |
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375HP 420TQ 396CI Big Block Chevy
When it came time to rebuild the big block in my
1969 Chevelle, I chose Promar due to their
competitive pricing and excellent customer service.
Their website provides an outstanding look into
their rebuild process, and everyone I dealt with was
professional and responsive. The performance options
selected gave me the combination of horsepower and
driveability I was looking for in my restoration
project.Sincerely,
Richard Gronback |
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| Disclaimer
Promar Reserves the right to change manufacturers
and specs without notice. HP and TQ ratings are
based on actual results on a engine dyno with open
headers in controlled environment tuned for maximum
performance. |
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