Page 225 - 2020-2021 Racecar Engineering Drag Racing Parts and Accessories Catalog

2020 DRAG RACING

Drag Race Camshafts
SB Chevy V8
1957-87 262, 267 (4.4 L), 283, 302, 305 (5.0 L), 307, 327, 350 (5.7 L), 400
Cam Lifter Basic Recommended Duration @ .050" Adv. Dur. Lobe Valve Lash Gross Lift
Application Part No. Part No. RPM Comp. Ratio Int. Exh. Int. Exh. Sep. Int. Exh. Int. Exh.
Hydraulic Camshafts For Drag Racing
Good Low/Mid-Range Torque
And HP, 8.75-10.0:1 Comp. Ratio, CRN100172 B CRN99277-16 1800-5400 8.75-10.0:1 218° 218° 274° 274° 106° .000" .000" .450" .450"
2500+ Converter
Good Mid-Range Torque And HP,
9.5-10.75:1 Comp. Ratio, CRN100132 B CRN99277-16 2000-5800 9.5-10.75:1 222° 222° 278° 278° 110° .000" .000" .467" .467"
2500+ Converter
Good Mid/Upper-Range Torque CRN10008
And HP, 9.5-11.1: Comp Ratio CRN100082 B CRN99277-16 2400-6200 9.5-11.0:1 226° 226° 282° 282° 106° .000" .000" .470" .470"
3000+ Converter
Good Mid/Upper-Range Torque
And HP, 9.5-11.0:1 Comp. Ratio CRN100072 B CRN99277-16 2800-6200 9.5-11.0:1 228° 228° 284° 284° 112° .000" .000" .480" .480"
3000+ Converter
Good Mid-Range Torque And HP,
10.0-11.5:1 Comp. Ratio, CRN110591 CRN99277-16 2800-6400 10.0-11.5:1 228° 234° 284° 290° 106° .000" .000" .480" .494"
3000+ Converter
Good Upper-Range Torque And HP, CRN10011
10.5-12.0:1 Comp. Ratio, CRN100112 B CRN99277-16 3400-7000 10.5-12.0:1 246° 246° 302° 302° 106° .000" .000" .500" .500"
3500+ Converter
Mechanical Camshafts For Drag Racing
Good Mid-Range Torque And HP, CRN110921
10.5-12.0:1 Comp. Ratio, CRN110922 B CRN99250-16 3200-6800 10.5-12.0:1 244° 252° 280° 288° 106° .026" .026" .518" .536"
3000+ Converter
Good Mid-Range Torque And HP,
11.5-12.5:1 Comp. Ratio, CRN110981 CRN99250-16 3800-7200 11.5-12.5:1 252° 260° 288° 296° 106° .026" .026" .536" .554"
Race Converter
Roller Camshafts For Drag Racing
Good Mid/Upper-Range Torque
And HP, 11.5:1 Comp. Ratio CRN118831 C CRN11570-16 4200-8000 11.5:1 Min. 260° 264° 292° 296° 106° .020" .020" .630" .630"
Race Converter

BB Chevy V8
1967-95 396, 402, 427, 454, 502, Rodeck 481 Aluminum
Cam Lifter Basic Recommended Duration @ .050" Adv. Dur. Lobe Valve Lash Gross Lift
Application Part No. Part No. RPM Comp. Ratio Int. Exh. Int. Exh. Sep. Int. Exh. Int. Exh.
Hydraulic Camshafts For Drag Racing
Good Mid-Range Torque And HP,
9.5-10.75:1 Comp. Ratio, CRN133801 CRN99277-16 2000-5800 9.5-10.75:1 222° 234° 278° 290° 114° .000" .000" .529" .525"
2500+ Converter
Good Mid/Upper-Range Torque And
HP, 9.5-11.0:1 Comp. Ratio, CRN103072 B CRN99277-16 2200-5600 9.5-11.0:1 226° 226° 282° 282° 108° .000" .000" .533" .533"
2500+ Converter
Good Mid/Upper-Range Torque And
HP, 9.5-11.0:1 Comp. Ratio, CRN103062 B CRN99277-16 2800-6200 9.5-11.0:1 228° 228° 284° 284° 112° .000" .000" .544" .544"
2500+ Converter
Good Mid-Range Torque And HP, 10.0- CRN134561 CRN99277-16 3000-6800 10.0-11.5:1 236° 246° 296° 306° 114° .000" .000" .553" .571"
11.5:1 Comp. Ratio, 3000+ Converter

B: Cam and lifter kit, includes assembly lubricant.
C: Requires cam button spacer and a .489" I.D. (CRN11990-1) or .500" I.D. (CRN11989-1) aluminum-bronze distributor gear. For engines equipped with a mechanical fuel pump, (CRN11985-1)
pushrod is highly recommended to prevent fuel pump lobe wear.
SB Chevy Notes:
When using 1955-56 265 C.I. blocks, late model cam bearings must be installed. 1988-99 Chevy 305 and 350 C.I. engines (and some 1987 350 C.I. engines) use a different configuration
cam core than the 1957-87 engines and can’t interchange.
BB Chevy Notes:
Use cams and components in 1991-95 Gen. V engines only if lifter preload is checked, or they have been converted to adjustable rocker arms. For 1965-66 big block Chevy engines, a groove
3/16" wide and 7/64" deep must be machined in the center of the rear cam bearing journal. When using dual valve springs in 1973-1981 454 C.I. engines, exhaust valve rotators must be
eliminated and spring spacers (CRN99459-8) or valve spring retainers (CRN99948-2) must be substituted on the exhaust side only to prevent excessive valve spring shimming.
These listings are just a sampling of the many popular Crane Cams we have in stock.

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