Page 28 - Classic
P. 28
1948-84 Big Twin Cam
Duration Valve Lift
VT No. Year Grind Timing Application
@ .053 Shovel Pan
CAMS FOR STREET AND DRAG APPLICATIONS
-6/46 220 .390 .412 Stock H/D front cylinder timing
Stock (Front Cyl.) H/D Cams 44/20 244 .390 .412 Listed for Comparison
14/38 232 .390 .412 Stock H/D front cylinder timing
Stock (Rear Cyl.) H/D Cams 44/20 244 .390 .412 Listed for Comparison
10-2011 1948-69 J 21/41 242 .405 .425 Mild street; Panheads and Shovelheads, smooth idle more power through
10-2020 1970-77 R.P.M. range. Bolts in with no head work.
10-2030 1978-84
10-2260 1948-69 A2 19/43 242 .450 .470 Bolt in cam that requires no head work. More mid range and hi end power. Idle unaffected.
10-2263 1970-77
10-2267 1978-84
10-2310 1948-69 AB 21/43 244 .450 .470 “A” Intake and long duration exhaust for cooler running and more high-end power.
10-2320 1970-77 Both in street cam (except 80-81).Okay. for Hydraulic Lifters.
10-2331 1978-84
10-2351 1948-69 B2 26/50 256 .485 .507 Street Drags: More mid range and high end power, smooth idle. Best cam for modified 74/80
10-2353 1970-77 cubic inch and small strokers. Spring spacing required.
10-2358 1978-84
10-2430 1970-77 BH 24/52 256 .450 .470 Hydraulic version of a “B” cam. Usually a bolt in but spring spacing may be required on 1980-81
10-2440 1978-84 Shovelheads.
1948-69 7 29/53 262 .510 .535 Upgraded version of original #6 Grind. Great street cam for 84/88 inch strokers. Maximum
10-2265 1970-77 Torque available from 2200 to 6500 R.P.M
10-2266 1978-84
10-2600 1948-69 C 37/61 278 .525 .550 Best production cam made for big street engines. Strokers from 84” to 96” will really turn on with
10-2610 1970-77 this cam. Broad torque range pulls from 2000 to 7000+ R.P.M.
10-2620 1978-84
CAMS FOR LOW COMPRESSION ENGINES
10-2420 1948-69 B Bolt In
10-2130 1948-69 1 16/36 232 .427 .450 This is the low compression piston version of “A” grind cam for 74 and 80 cubic inch for engines
10-2140 1970-77 with 7.5 compression pistons.
10-2150 1988-84
10-2350 1978-84 2 15/35 230 .490 .512 Low compression piston version of a “B” grind cam. Cam features more power through R.P.M.
range
10-2630 1948-69 3 23/43 246 .514 .540 High lift, short duration for motors 84 cubic inch engines or larger. More power for small strokers
10-2640 1970-77 with 7.5 compression pistons
10-2650 1978-84
HIGH PERFORMANCE & DRAGSTER CAMS
10-2740 1948-69 M 28/56 264 .590 .210 Street Drags: 88+ cubic inch engines maximum mid-range torque cam 3000/6500 RPM. OK for low
10-2750 1970-77 compression on street. Andrews springs and collars make installation easy.
1978-84
10-2850 1948-69 9 32/64 276 .530 .222 Drags: Broad tip design for maximum mid-range power for strokers from 88 cubic inches and larg -
10-2860 1970-77 er. Requires Andrews springs and collars for head set up and installation.
10-2870 1978-84
10-2890 1948-69 10 34/70 284 .580 .230 Maximum output dragster cam for BIG motors from 92” cubic inch and up.
10-2900 1970-77 70/34 284 .580 This cam is for best torque up to 6500 R.P.M. Requires Andrews springs and collars.
Competition Cams
VT No. Year P/N Duration Valve Lift Valve Timing Lift @ TDC
Application @ 053 Open/Close
Hydraulic
Intake Exhaust Intake Exhaust Intake Exhaust Intake Exhaust
10-5009 78-84 Very good torque and mid- SHV4000 236 236 .450” .450” 14/42 42/14 .093” .093”
10-5010 70-77 range. Good roll on power. SHV-4001
10-5011 78-84 Good torque strong mid- SHV4010 236 236 .485” .485” 14/42 42/14 .093” .093”
range and good roll on power.
10-5016 70-77 Performance cam. Use with carb, SHV-4031 252 252 .485” .485” 22/50 50/22 .120” .120”
pipes and valve springs.
The Leader in Performance Technology
Specifications
VT No. Year DURATION @ .053” Gross Valve Lift Series TYPE & APPLICATION
Grind
OPEN/CLOSE a Number
INT. EXH. INT. EXH.
10-4374 1948-69 286 286 .575 b .575 b Hi-Roller MECHANICAL - Drag cam for large cubic engines. Head work required for proper spring travel,
41/65 73/33 .606 c .606 c 330B piston-to-valve, and valve-to-valve clearances, also to insure maximum performance Camshafts
Cam lift at TDC: Int: .192” Exh: .164”* having over .450” valve lift in 1948-69 engines, will need to have front
496
Duration Valve Lift
VT No. Year Grind Timing Application
@ .053 Shovel Pan
CAMS FOR STREET AND DRAG APPLICATIONS
-6/46 220 .390 .412 Stock H/D front cylinder timing
Stock (Front Cyl.) H/D Cams 44/20 244 .390 .412 Listed for Comparison
14/38 232 .390 .412 Stock H/D front cylinder timing
Stock (Rear Cyl.) H/D Cams 44/20 244 .390 .412 Listed for Comparison
10-2011 1948-69 J 21/41 242 .405 .425 Mild street; Panheads and Shovelheads, smooth idle more power through
10-2020 1970-77 R.P.M. range. Bolts in with no head work.
10-2030 1978-84
10-2260 1948-69 A2 19/43 242 .450 .470 Bolt in cam that requires no head work. More mid range and hi end power. Idle unaffected.
10-2263 1970-77
10-2267 1978-84
10-2310 1948-69 AB 21/43 244 .450 .470 “A” Intake and long duration exhaust for cooler running and more high-end power.
10-2320 1970-77 Both in street cam (except 80-81).Okay. for Hydraulic Lifters.
10-2331 1978-84
10-2351 1948-69 B2 26/50 256 .485 .507 Street Drags: More mid range and high end power, smooth idle. Best cam for modified 74/80
10-2353 1970-77 cubic inch and small strokers. Spring spacing required.
10-2358 1978-84
10-2430 1970-77 BH 24/52 256 .450 .470 Hydraulic version of a “B” cam. Usually a bolt in but spring spacing may be required on 1980-81
10-2440 1978-84 Shovelheads.
1948-69 7 29/53 262 .510 .535 Upgraded version of original #6 Grind. Great street cam for 84/88 inch strokers. Maximum
10-2265 1970-77 Torque available from 2200 to 6500 R.P.M
10-2266 1978-84
10-2600 1948-69 C 37/61 278 .525 .550 Best production cam made for big street engines. Strokers from 84” to 96” will really turn on with
10-2610 1970-77 this cam. Broad torque range pulls from 2000 to 7000+ R.P.M.
10-2620 1978-84
CAMS FOR LOW COMPRESSION ENGINES
10-2420 1948-69 B Bolt In
10-2130 1948-69 1 16/36 232 .427 .450 This is the low compression piston version of “A” grind cam for 74 and 80 cubic inch for engines
10-2140 1970-77 with 7.5 compression pistons.
10-2150 1988-84
10-2350 1978-84 2 15/35 230 .490 .512 Low compression piston version of a “B” grind cam. Cam features more power through R.P.M.
range
10-2630 1948-69 3 23/43 246 .514 .540 High lift, short duration for motors 84 cubic inch engines or larger. More power for small strokers
10-2640 1970-77 with 7.5 compression pistons
10-2650 1978-84
HIGH PERFORMANCE & DRAGSTER CAMS
10-2740 1948-69 M 28/56 264 .590 .210 Street Drags: 88+ cubic inch engines maximum mid-range torque cam 3000/6500 RPM. OK for low
10-2750 1970-77 compression on street. Andrews springs and collars make installation easy.
1978-84
10-2850 1948-69 9 32/64 276 .530 .222 Drags: Broad tip design for maximum mid-range power for strokers from 88 cubic inches and larg -
10-2860 1970-77 er. Requires Andrews springs and collars for head set up and installation.
10-2870 1978-84
10-2890 1948-69 10 34/70 284 .580 .230 Maximum output dragster cam for BIG motors from 92” cubic inch and up.
10-2900 1970-77 70/34 284 .580 This cam is for best torque up to 6500 R.P.M. Requires Andrews springs and collars.
Competition Cams
VT No. Year P/N Duration Valve Lift Valve Timing Lift @ TDC
Application @ 053 Open/Close
Hydraulic
Intake Exhaust Intake Exhaust Intake Exhaust Intake Exhaust
10-5009 78-84 Very good torque and mid- SHV4000 236 236 .450” .450” 14/42 42/14 .093” .093”
10-5010 70-77 range. Good roll on power. SHV-4001
10-5011 78-84 Good torque strong mid- SHV4010 236 236 .485” .485” 14/42 42/14 .093” .093”
range and good roll on power.
10-5016 70-77 Performance cam. Use with carb, SHV-4031 252 252 .485” .485” 22/50 50/22 .120” .120”
pipes and valve springs.
The Leader in Performance Technology
Specifications
VT No. Year DURATION @ .053” Gross Valve Lift Series TYPE & APPLICATION
Grind
OPEN/CLOSE a Number
INT. EXH. INT. EXH.
10-4374 1948-69 286 286 .575 b .575 b Hi-Roller MECHANICAL - Drag cam for large cubic engines. Head work required for proper spring travel,
41/65 73/33 .606 c .606 c 330B piston-to-valve, and valve-to-valve clearances, also to insure maximum performance Camshafts
Cam lift at TDC: Int: .192” Exh: .164”* having over .450” valve lift in 1948-69 engines, will need to have front
496
