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Home :: Pontiac :: Pontiac V8 326-455 1955-1981
Pontiac V8 326-455 1955-1981

2-Pontiac-V8--1955-1981-HFTC-HRC 41xxx1
cam recommendation_btnAll Howards™ Cams use the highest-grade race quality cores available. All hydraulic and mechanical flat tappet camshafts are 100% Rockwell checked and Parkerized to ensure the highest quality control standards available anywhere. Howards™ Cams are manufactured on dedicated high precision cam grinding machines. Most Howards™ Cams are packaged and shipped in our unique, hard, high impact plastic reusable cases. This ensures that the high quality camshaft that went into the case comes out in the same condition, when delivered, as when it was packed.







Cam Part No. Cam & Lifter Set Part No. Duration
IN
Advertised
EX
Duration
IN
@.050"
EX
Valve w/1.50
IN
Lift Rockers
EX
Lobe Separation Angle Intake Centerline Valve
IN
Lash
EX
Notes
410011-12 NA 259 269 205 215 .420 .446 112 108 Hyd. Hyd. 1
800-4800  Smooth idle, Great upgrade from stock cam.      
410931-11 CL410931-11 267 267 213 213 .450 .450 111 107 Hyd. Hyd. 1
1500-5500  Good idle, Strong low & mid-range torque.      
410021-12 CL410021-12 267 277 213 223 .450 .450 112 108 Hyd. Hyd. 1
1500-5800  Super low & mid-range torque. Excellent driveability.      
411421-08 CL411421-08 275 275 221 221 .470 .470 108 104 Hyd. Hyd. 1
1800-5800  Fair idle, Street performance, good low end & mid range torque.     
410991-10 NA 277 277 223 223 .465 .465 110 106 Hyd. Hyd. 1
2000-6000  Nice single pattern cam for Hot Street/Strip performance.     
411161-10 CL411161-10 277 289 223 235 .465 .470 110 106 Hyd. Hyd. 1
2000-6000  Mild rough idle, Street/Strip, Strong mid range performance.     
410961-08 CL410961-08 285 285 231 231 .480 .480 108 104 Hyd. Hyd. 1
2200-6200  Hot Street, improved mid-range. Best with 9.5:1+ comp., 4-barrel.     
410961-10 NA 286 286 231 231 .480 .480 110 106 Hyd. Hyd. 1
2400-6200  Exceptional mid-range & top end with 389 or larger.      
410051-08 NA 285 295 231 241 .480 .470 108 104 Hyd. Hyd. 1
2400-6000  Lopey idle, Hot Street/Brackets, very strong mid range. 2500+ stall, 9.0:1 CR.    
410051-14 NA 285 295 231 241 .480 .470 114 112 Hyd. Hyd. 1
2600-6400  Excellent RAM Air IV replacement. Will work well with NOS.     
410361-08 NA 289 294 235 241 .488 .503 108 104 Hyd. Hyd. 1
2700-6500  Rough idle, Street/Strip. Needs 9.0:1+ CR, 2500+ stall, good intake, gears & headers.   
411391-08 NA 294 301 241 247 .503 .510 108 104 Hyd. Hyd. 1
3000-6800  Rough idle, Hot Street/Bracket, Nice upper mid range & top end.     
419991 NA Custom Grind Camshaft
Hydraulic Flat Tappet Special Order Camshaft.       
Hyd. Hyd. 1


OE Muscle Hydraulic Flat Tappet Camshafts          
417561-11 NA 273 282 198 207 .405 .410 111 106 Hyd. Hyd. 1
1600-5000  Near duplicate of the Pontiac 325HP/389 cam (GM #9779066).     
417701-11 NA 271 280 198 208 .404 .408 111 98 Hyd. Hyd. 1
1600-5000  Near duplicate of the Pontiac Ram Air I/II 375HP/400 cam (GM #9779067).    
417131-11 NA 273 282 200 210 .407 .411 111 106 Hyd. Hyd. 1
1700-5200 Near duplicate of the Pontiac Tri-Power 318HP/389 cam (GM #529472).    
417591-15 NA 288 302 212 225 .408 .408 115 113 Hyd. Hyd. 1
1800-5200  Near duplicate of the Pontiac 390HP/428 cam (GM #9779068).     
417251-15 NA 301 313 224 236 .407 .407 115 112 Hyd. Hyd. 1
1800-5400  Near duplicate of the Pontiac Ram Air III 366HP/400 cam (GM #9785744).    


Max Certified Hydraulic Flat Tappet Cam & Lifter Sets
MC410931-11 NA 267 267 213 213 .450 .450 111 107 Hyd. Hyd. 1
1500-5500  Good idle, Strong low & mid-range torque.      
MC410021-12 NA 267 277 213 223 .450 .450 112 108 Hyd. Hyd. 1
1500-5800  Super low & mid-range torque. Excellent driveability.      
MC410961-08 NA 285 285 231 231 .480 .480 108 104 Hyd. Hyd. 1
2200-6200  Hot Street, improved mid-range. Best with 9.5:1+ comp., 4-barrel.     

Camshaft Notes Master List

1. Stock (O.E.) valve springs cannot be used.
2. Requires thrust button.
3. Cam and lifter sets with "DL" suffix feature Direct Lube™ lifters.
4. Ignition firing order must be changed to 1-8-7-3-6-5-4-2.
5. Requires upgraded distributor gear.
6. Requires 3-Bolt timing set.
7. Requires use of Retro-Fit Tie Bar Hydraulic Roller Lifters.
8. Includes 2 camshafts.
9. Includes 4 camshafts.
10. Ignition firing order must be changed to 1-3-7-2-6-5-4-8.
11. Ignition firing order must be changed to 1-8-7-2-6-5-4-3.
12. Requires custom programmer/tuning.
13. Requires adjustable valvetrain.
14. No specific vacuum rating is guaranteed.
15. Lobes designed to take maximum advantage of .904" dia. lifter.
16. Lobes designed to take maximum advantage of .875" dia. lifter. 

 


3-Pontiac-V8-1955-1981-4-7-Swap-Retro-Fit-Hydraulic-Roller-Camshafts-HRC 41xxx5
cam recommendation_btnPremium materials and advanced engineering to deliver unbelievable power. These cams offer significant advantages of additional lift and more power compared to flat tappet designs. The latest in lobe design produces better throttle response and top end horsepower. Designed with fast ramp speeds to give you the most power possible while maintaining the easy maintenance of a hydraulic cam.




4/7 Swap Retro-Fit Hydraulic Roller Camshafts          
Cam Part No. Cam & Lifter Set Part No. Duration
IN
Advertised
EX
Duration
IN
@.050"
EX
Valve w/1.50
IN
Lift Rockers
EX
Lobe Separation Angle Intake Centerline Valve
IN
Lash
EX
Notes
414645-10 NA 266 274 213 221 .485 .475 110 106 Hyd. Hyd. 1,4
1400-5600  Noticeable idle, broad low to mid range power band. Needs 2000+ stall.    
414145-10 NA 272 282 219 229 .525 .520 110 106 Hyd. Hyd. 1,4
1800-6000  Mild idle, Street Performance, good low to mid range torque & power.     
414345-10 NA 280 290 227 237 .560 .560 110 106 Hyd. Hyd. 1,4
2000-6200  Choppy idle, Saturday nite special, Street/Strip. Needs good intake, headers & 2500+.   
414495-08 NA 290 296 237 243 .560 .566 110 106 Hyd. Hyd. 1,4
2500-6500  Good idle, great mid range performance. 10.0:1+ CR, 2600+ stall & 3.73 or lower gears.   
414655-08 NA 296 302 243 249 .600 .600 108 104 Hyd. Hyd. 1,4
3000-6800  Rough idle, Hot Street/Strip, good mid range torque & power.     
414455-08 NA 306 312 253 259 .600 .600 108 104 Hyd. Hyd. 1,4
3200-7000  Hot Street/Bracket, major mid range & top end performance. 11.0:1+ CR, 3500+ stall.   
419995 NA Custom Grind Camshaft
Retro-Fit Hydraulic Roller Special Order Camshaft.       
Hyd. Hyd. 1,4

4-Pontiac-V8--1955-1981-MFTC-HRC 41xxx1
cam recommendation_btnAll Howards™ Cams use the highest-grade race quality cores available. All hydraulic and mechanical flat tappet camshafts are 100% Rockwell checked and Parkerized to ensure the highest quality control standards available anywhere. Howards™ Cams are manufactured on dedicated high precision cam grinding machines. Most Howards™ Cams are packaged and shipped in our unique, hard, high impact plastic reusable cases. This ensures that the high quality camshaft that went into the case comes out in the same condition, when delivered, as when it was packed.




Cam Part No. Cam & Lifter Set Part No. Duration
IN
Advertised
EX
Duration
IN
@.050"
EX
Valve w/1.50
IN
Lift Rockers
EX
Lobe Separation Angle Intake Centerline Valve
IN
Lash
EX
Notes
411742-06 NA 283 289 248 254 .535 .550 106 102 .022 .022 1
2500-6500  Street/Strip, powerful through entire rpm range.      
410202-08 NA 295 299 260 264 .565 .555 108 104 .022 .022 1
3000-6800  Hot Pro-Street & Bracket Racing. Great mid-range & top end performer.    
419992 NA Custom Grind Camshaft
Mechanical Flat Tappet Special Order Camshaft.         
1

5-Pontiac-V8-1955-1981-MRC-HRC 41xxx5
cam recommendation_btnAll Howards mechanical roller cams are made from premium billet steel. Mechanical roller cams are designed and mainly used in full competition applications. Real race conditions are extremely punishing to the valvetrain and the camshaft. So why would you use a cast core? No matter how good the heat-treatment, a cast core (SADI) will not provide the performance or durability of an American steel billet cam. At Howards Cams we will not skimp on materials for higher profits.




Cam Part No. Cam & Lifter Set Part No. Duration
IN
Advertised
EX
Duration
IN
@.050"
EX
Valve w/1.50
IN
Lift Rockers
EX
Lobe Separation Angle Intake Centerline Valve
IN
Lash
EX
Notes
411123-08 NA 293 301 261 269 .620 .620 108 104 .024 .024 1,5
3500-6500  400-455. Hot street & bracket race.       
411133-08 NA 307 317 275 285 .630 .630 108 104 .024 .024 1,5
4000-6600  450+CID. 12:1. Good heads. Best with 1.65 rockers.      
419993 NA Custom Grind Camshaft
Mechanical Roller Special Order Camshaft.         
1,5
Home :: Pontiac :: Pontiac V8 326-455 1955-1981


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