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PI 4.6 naturally aspirated cams

2V PI and NPI blower, turbo, and nitrous cams

NPI 4.6 and 5.4 naturally aspirated cams

PI 5.4 naturally aspirated cams

TFS specific cams

3V MODULAR CAMSHAFTS

4V MODULAR CAMSHAFTS

 
 

Bullet Cams were found inside 7 modular engines that won their class championships, and set 5 modular world records in the 2008 race reason alone.  You may not have heard of them but you see cars using their cams covering over 50% of the fastest modular lists on the forums.  We worked extensively with Bullet to develop these new proprietary profiles which utilize the latest technology for the modular engines.  They are designed and optimized for the unique airflow characteristics of both stock and ported heads.

Please read the detailed explanations below before choosing a cam.  These are not your typical off the shelf one size fits all cam lobe like the other guys.  The lobes are designed for specific duty be it on the intake or exhaust and/or if the application is naturally aspirated, blower, or turbo.  They have very aggressive install centerlines and asymmetrical lobes which make their specs very different than typical cams you are used to seeing.  Duration is important in determining a cam's suitability but just as important is the installation location (centerline) of the lobes.  This is something that many other modular cams have not done properly, and hence you usually don't see it listed in their specs.

If you have any questions about what is best for your combination please contact us.  We have learned what works and what doesn't, and its sometimes different that what is discussed in the forums and magazines. 

We have found (the hard way) that most all other 2V cams on the market have unacceptable intake valve to piston clearance.  Our 2V cams are designed with a minimum of 0.035" of intake to valve clearance for 4.6 engines with PI heads with stock pistons.  While that sounds small it is a safe spec for this engine.  We found 0.000" - 0.005" when we actually measured the other guys cams, and many cases of bent valves. 
 
Don't become a bent valve statistic!
 
All 2V and 4V cam specs are rated with a 1.80 ratio rocker.  The Ford rocker is actually a variable ratio and 1.80 is closer to reality in these lift ranges.  Thus our 0.550" lift spec is a true 0.550" lift in the engine rather than the 0.545" you find from some of the other guys.  These lobe designs are the most aggressive that can be made with the stock Ford rocker system.

 

2V matched set of cam gears

We do not offer these separately any longer, however we do offer a complete cam degree service for $149 return freight included as we learned the cams have as much variance as the gears.  Please go to this page for more information.

 

2V MODULAR CAMSHAFTS - $580 a set

Flat rate shipping of $10 on all orders to lower 48 states!

 

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NPI 4.6 and 5.4 naturally aspirated cams

PI 4.6 naturally aspirated cams

PI 5.4 naturally aspirated cams

NPI and PI blower, turbo, and nitrous cams

TFS specific cams

 

 

3V MODULAR CAMSHAFTS - $780 a set

Flat rate shipping of $10 on all orders to lower 48 states!

We include our custom cam phaser lockouts with all 3V cams!

 

4V MODULAR CAMSHAFTS - $1190 a set

Flat rate shipping of $10 on all orders to lower 48 states!

Due to the various head designs and applications all 4V camshafts are custom made to order as per your engine build.  Typical turnaround time is 2 weeks once the order is finalized.

 
 
 

 
 

NPI 4.6 and 5.4 naturally aspirated cams

Here is a FAQ on the 2V cams for the detailed questions.

 
NPI heads have different needs than PI heads so we now offer NPI specific cams.  NPI heads have much more piston to valve clearance than a PI engine, this allows more freedom in camshaft design.  They have more restricted exhaust ports so the exhaust duration is made longer to compensate.  The 525 intake lift cams will work on stock NPI heads, the 550 lift version will need raised retainers on the intake valves or other modification to work.  500 exhaust lift is used for Stage 1 and 2 as the stock exhaust port stalls at 400 lift.  Stage 2.5 and higher cams are designed for modified/ported NPI heads with aftermarket intake manifolds.  Please contact us if you have any questions on this. 
 
All NPI NA cams are designed to use the stock NPI valve springs up to 6500RPM, above that upgraded valve springs are highly recommended.
 
Please contact us if you have any questions on choosing the correct cam for your application.
 
These NPI specific cams will NOT work in a stock 4.6 PI engine as they will bend the intake valves due to their aggressive intake centerline location!
 
 
 
2V 4.6 AND 5.4 NPI NA CAMS PART NUMBER
0.050 Duration
Lift at valve
Centerlines
LSA
STOCK PI CAMS  (for reference)
200/209
505/531
114/116
115
         
NPI TORQUER 215/218 525/500 106/114 110

Will give good low and midrange torque increase.  Good cam for stock torque converter Crown Victoria/Marquis/Town Car, Thunderbird/Cougar, and trucks on stock NPI and PI intakes.

 

NPI STAGE 1    - NATURALLY ASPIRATED 220/223 525/500 106/114 110

Max effort cam for Crown Victoria/Marquis/Town Car, Thunderbird/Cougar, and trucks with the stock torque converter.  Should be used with the PI intake.  Good cam for automatic Mustang with stock rear end gears.

 

NPI STAGE 2    - NATURALLY ASPIRATED
225/228 525/500 106/114 110

Max effort cam for stock NPI heads, 5 speed or 3000 stall torque converter recommended.  Crown Victoria/Marquis/Town Car, Thunderbird/Cougar, and trucks should have the torque converter changed and better rear end gears.

 

NPI STAGE 2.5 - NATURALLY ASPIRATED
228/230 550/525 106/114 110

Aftermarket intake, ported heads, headers, and higher flow fuel injectors are recommended at this point.

 

NPI STAGE 3    - NATURALLY ASPIRATED
233/235 550/525 106/112 109

Aftermarket intake, ported heads, headers, and higher flow fuel injectors are required.

 

NPI STAGE 3.5 - NATURALLY ASPIRATED 238/240 550/525 106/112 109

Aftermarket intake, ported heads, headers, and higher flow fuel injectors are required.  This cam will be best suited with extreme intakes such as the Logan, Edelbrock or TFS.

 

NPI STAGE 4   - NATURALLY ASPIRATED 241/243 550/540 106/112 109

Aftermarket intake, ported heads, headers, and higher flow fuel injectors are required.  This cam will be best suited with extreme intakes such as the Logan, Edelbrock or TFS.

 

NPI STAGE 4.5 - NATURALLY ASPIRATED 245/248 550/540 106/112 109

Aftermarket intake, ported heads, headers, and higher flow fuel injectors are required.  This cam will be best suited with extreme intakes such as the Logan, Edelbrock or TFS.

 

NPI STAGE 5   - NATURALLY ASPIRATED 250/253 540/540 106/112 109

Aftermarket intake, ported heads, headers, and higher flow fuel injectors are required.  This cam will be best suited with extreme intakes such as the Logan, Edelbrock or TFS.

 

 


 

PI 4.6 naturally aspirated cams

Here is a FAQ on the 2V cams for the detailed questions.

2V piston intake valve notching is available for $129 per set of 8 return freight included!

Allows you to fit a much bigger and better performance cam with the 4.6 PI motor!

4.6 PI motors with stock pistons has severe intake valve to piston clearance problems.  If using the stock heads only the Torquer, Stage 1, and Stage 2 cams will fit safely.  All larger cams require either modified intake valves and/or piston notches.  The exhaust duration is made shorter on PI head NA cams as the exhaust port be it stock or ported is highly overactive compared to the PI intake port.
 
All NA cams below Stage 3 are designed for use with the stock valve springs up to 6500RPM, above that upgraded springs are required.
 
Please contact us if you have any questions on choosing the correct cam for your application.

 

2V 4.6 PI NA CAMS PART NUMBER
0.050 Duration
Lift at valve
Centerlines
LSA
STOCK PI CAMS  (for reference)
200/209
505/531
114/116
115
         
46PI TORQUER 215/213 525/500 108/112 110

Will give good low and midrange torque increase.  Good cam for stock torque converter Crown Victoria/Marquis/Town Car, Thunderbird/Cougar, and trucks.

 

46PI STAGE 1       - NATURALLY ASPIRATED 220/218 525/500 110/110 110

Max effort cam for Crown Victoria/Marquis/Town Car, Thunderbird/Cougar, and trucks with the stock torque converter.  Should be used with the PI intake.  Good cam for automatic Mustang with stock rear end gears.

 

46PI STAGE 2       - NATURALLY ASPIRATED
225/223 550/500 110/110 110

Max effort cam for stock PI heads, 5 speed or 3000 stall torque converter recommended.  Crown Victoria/Marquis/Town Car, Thunderbird/Cougar, and trucks should have the torque converter changed.  Rear gear of 3.73 minimum recommended.

If you have a PI head swapped vehicle with stock valves still in it, this is the cam for you!

 

46PI STAGE 2P    - NATURALLY ASPIRATED
225/223 550/500 108/110 109

Advanced intake lobe version of the Stage 2 cam.  This is the cam to use if you are willing to remove the cylinder head and replace the intake valve as it will give more midrange torque than the Stage 2 with no loss of top end power.  PTV is very tight with the stock valve and this cam, you only have about 0.005" of clearance with the stock valve and piston with this cam.  With the modified intake valve you are safe.  Rear gear of 3.73 minimum recommended.

 

46PI STAGE 2.5    - NATURALLY ASPIRATED
228/226 550/500 110/110 110

This will need modified intake valves to work with the stock pistons.  In comparison to the Stage 2P cam this would be the cam to choose if you are more concerned with 5000-6500 power and are willing to lose some torque below 4000RPM.  This cam should be used with long tube headers.  This is the largest cam recommended with the stock pistons and stock valve springs.  Rear gear of 4.10 minimum recommended.

 

46PI STAGE 3       - NATURALLY ASPIRATED
233/230 550/525 106/110 108

Notched pistons and higher flow fuel injectors are required.   Aftermarket intake, ported heads, and long tube headers are recommended.  Mild to rough idle, good low end torque with matching compression.  Rear gear of 4.30 minimum recommended.

 

46PI STAGE 3.5    - NATURALLY ASPIRATED 238/235 550/525 106/110 108

Ported heads, notched pistons, headers, and higher flow fuel injectors are required.  This cam will be best suited with extreme intakes such as the Logan, Edelbrock or TFS.    This is probably the max effort cam possible with the 4R70W transmission before a C4 or similar conversion is warranted.  Expect shift points of 6500-7000RPM with the stock PI intake and 7000-7200RPM with more extreme intakes.  Rough idle.  Rear gear of 4.56 minimum recommended.

 

46PI STAGE 4.0    - NATURALLY ASPIRATED 241/238 550/540 106/110 108

Aftermarket intake, ported heads, notched pistons, headers, and higher flow fuel injectors are required.  This cam will be best suited with extreme intakes such as the Logan, Edelbrock or TFS and is designed for shift points 7000-7300RPM.  Rough idle.  Rear gear of 4.56 minimum recommended.

 

46PI STAGE 4.5    - NATURALLY ASPIRATED 245/243 550/540 106/110 108

Aftermarket intake, ported heads, notched pistons, headers, and higher flow fuel injectors are required.  This cam will be best suited with extreme intakes such as the Logan, Edelbrock or TFS and is designed for shift points 7200-7500RPM.  Rough to radical idle.  Rear gear of 4.88 minimum recommended.

 

46PI STAGE 5.0    - NATURALLY ASPIRATED 250/248 540/540 106/110 108

Aftermarket intake, ported heads, notched pistons, headers, and higher flow fuel injectors are required.  This cam will be best suited with extreme intakes such as the Logan, Edelbrock or TFS and is designed for shift points 7500~7800RPM.  Radical idle.  Rear gear of 4.88 minimum recommended.  Cams bigger than this are race only and need to contact Bullet directly!

 

 


 

 

PI 5.4 naturally aspirated cams

Here is a FAQ on the 2V cams for the detailed questions.

5.4 PI motors have much more freedom with designing a NA cam as the piston to valve clearance is a full 0.1" larger than a stock 4.6 PI motor.  If using the stock style piston you should be able to safely fit any of these cams however with the Stage 3 and larger you need to check piston to valve clearance of the intake valve to ensure you have safe clearance with your particular engine.  The exhaust duration is made shorter on PI head NA cams as the exhaust port be it stock or ported is highly overactive compared to the PI intake port.
 
All NA cams are designed for use with the stock valve springs up to 6500RPM, above that upgraded springs are highly recommended.
 
Please contact us if you have any questions on choosing the correct cam for your application.

 

2V 5.4 PI NA CAMS PART NUMBER
0.050 Duration
Lift at valve
Centerlines
LSA
STOCK PI CAMS  (for reference)
200/209
505/531
114/116
115
         
54PI TORQUER 215/213 525/500 106/112 110
54PI STAGE 1       - NATURALLY ASPIRATED 220/218 525/500 106/110 108
54PI STAGE 2       - NATURALLY ASPIRATED
225/223 550/500 106/110 108
54PI STAGE 2.5    - NATURALLY ASPIRATED
228/226 550/500 106/110 108
54PI STAGE 3       - NATURALLY ASPIRATED
233/230 550/525 106/110 108
54PI STAGE 3.5    - NATURALLY ASPIRATED 238/235 550/525 106/110 108
54PI STAGE 4       - NATURALLY ASPIRATED
241/238 550/540 106/110 108
54PI STAGE 4.5    - NATURALLY ASPIRATED
245/243 550/540 106/110 108
54PI STAGE 5       - NATURALLY ASPIRATED 250/248 540/540 106/110 108

 


 

NPI and PI blower, turbo, and nitrous cams

Here is a FAQ on the 2V cams for the detailed questions.

Once under heavy boost and/or nitrous the various heads and shortblocks need close to the same cam specification.  The larger big bore, stroker, and 5.4 based engines can use the next size cam bigger than a 4.6 based motor.  If you look closely the exhaust centerline has been advanced considerably to help blowdown the cylinder and release as much heat as possible.
 
Upgraded valve springs are highly recommended with all blower applications that rev over 6000RPM, and all turbo applications that rev over 5000RPM.
 
Please contact us if you have any questions on choosing the correct cam for your application.

 

 
2V CUSTOM CAMS PART NUMBER
0.050 Duration
Lift at valve
Centerlines
LSA
STOCK PI CAMS  (for reference)
200/209
505/531
114/116
115
         
NPI STAGE 1   - BLOWER/NITROUS
220/226 525/500 108/116 112
NPI STAGE 2   - BLOWER/NITROUS
225/229 525/500 108/118 113
         
PI STAGE 1      - BLOWER/NITROUS 225/230 550/525 110/118 114
PI STAGE 2      - BLOWER/NITROUS
228/232 550/540 110/118 114
         
STAGE 2.5 - BLOWER/NITROUS
233/238 550/540 111/119 115
STAGE 3    - BLOWER/NITROUS
238/243 550/540 111/119 115
         
STAGE 1    - TURBO
217/213 525/500 109/119 114
STAGE 2    - TURBO
222/218 525/500 110/120 115
STAGE 2.5 - TURBO 227/223 525/500 110/120 115
STAGE 3    - TURBO
230/226 525/500 111/121 116

 


 

TFS specific cams

The TFS 2V heads are slightly different with what is needed for a cam grind.  Even though some of the cam specs are the same as the NPI/PI specs these cams are ground specifically for TFS heads.

You can use the stock TFS springs for all Stage 1 and Stage 2 cams, above that higher seat pressure springs are highly recommended.

Please contact us if you have any questions on choosing the correct cam for your application.

 

2V TFS CUSTOM CAMS PART NUMBER
0.050 Duration
Lift at valve
Centerlines
LSA
         
STAGE 1    - NATURALLY ASPIRATED
222/225 550/550 106/112 109
STAGE 2    - NATURALLY ASPIRATED
225/228 550/550 106/112 109
STAGE 2.5 - NATURALLY ASPIRATED
228/231 550/550 106/112 109
STAGE 3    - NATURALLY ASPIRATED 233/236 550/550 106/112 109
STAGE 3.5 - NATURALLY ASPIRATED 238/241 550/550 106/112 109
STAGE 4    - NATURALLY ASPIRATED 241/243 550/540 106/112 109
STAGE 4.5 - NATURALLY ASPIRATED 245/248 550/540 106/112 109
STAGE 5    - NATURALLY ASPIRATED 250/253 540/540 106/112 109
         
STAGE 1    - BLOWER/NITROUS
222/227
550/525
110/118
114
STAGE 2    - BLOWER/NITROUS
225/232 550/540 110/118 114
STAGE 2.5 - BLOWER/NITROUS
231/238 550/540 110/118 114
STAGE 3    - BLOWER/NITROUS
236/243 550/540 111/119 115
STAGE 3.5 - BLOWER/NITROUS
241/248 550/540 111/119 115
         
STAGE 1    - TURBO
217/213 525/500 109/119 114
STAGE 2    - TURBO
222/218 525/500 110/120 115
STAGE 2.5 - TURBO 227/223 525/500 110/120 115
STAGE 3    - TURBO
230/226 525/500 111/121 116

 

 


 

 

3V MODULAR CAMSHAFTS - $780 a set

Flat rate shipping of $10 on all orders to lower 48 states!

 
 
We include our custom cam phaser lockouts with all 3V cams!
 
The stock cam phaser will allow up to 50 degrees of cam timing retard at cruise for a small gas mileage increase.  This lessens the available cam size you can run in the engine and is the weak spot when higher spring pressures are used.  While they are only recommended with our Stage 1 cams, they are required for all Stage 2 and higher 3V cams.
 
Stage 1 and 2 cams are designed to be used with the stock valve springs. 
 
 
3V CUSTOM CAMS PART NUMBER
Advertised
0.050 Duration
Lift at valve
Centerlines
LSA
STAGE 1 243/258 205/220 450/450 110/114 112
STAGE 2
258/276
220/238
450/450
110/114
112
STAGE 2.5 - BLOWER/NITROUS 263/280 225/242 500/525 110/118 114
STAGE 3    - BLOWER/NITROUS 268/286 230/248 525/550 111/119 115
STAGE 3.5 - BLOWER/NITROUS 272/292 234/252 550/550 111/119 115

 

 

 

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