Page 222 - 2018 Racecar Engineering Drag Racing Parts and Accessories Catalog

Drag Race Camshafts
BB Chevy V8
1967-95 396, 402, 427, 454, 502, Rodeck 481 Aluminum
Duration @ .050" Adv. Dur. Valve Lash Gross Lift
Cam Lifter Basic Recommended Lobe
Application Part No. Part No. RPM Comp. Ratio Int. Exh. Int. Exh. Sep. Int. Exh. Int. Exh.
Roller Camshafts For Drag Racing
Good Low/Mid Range Torque And
HP, 11.0-12.5:1 Comp. Ratio, CRN138101 1 CRN13570-16 4 3600-7200 11.0-12.5:1 254° 262° 286° 294° 112° .020" .020" .714" .714"
3500+ Converter
Good Mid Range Torque And HP,
11.5:1 Minimum Comp. Ratio, CRN138131 1 CRN13570-16 4 4200-7600 11.5:1 Min. 262° 270° 294° 302° 114° .020" .020" .714" .714"
4000+ Converter
Good Mid/Upper
Range Torque And HP, CRN138291 1 4600-8000 12.5:1 Min. 274° 284° 314° 324° 110° .026" .026" .737" .726"
12.5:1 Min. Comp. Ratio CRN13570-16 4
Race Converter
500+ Cu. In. Bracket CRN13570-16 4
Racing,12.5:1 Comp. Ratio, CRN138351 CRN13574-16 7 4600-8200 12.5:1 Min. 274° 284° 314° 324° 114° .026" .026" .737" .726"
Race Converter
Ford-Mercury V8
1962-87 221-255-260-289-302 (5.0L) (Except 1982-95 302 (5.0L) HO)
Duration @ .050" Adv. Dur. Valve Lash Gross Lift
Cam Lifter Basic Recommended Lobe
Application Part No. Part No. RPM Comp. Ratio Int. Exh. Int. Exh. Sep. Int. Exh. Int. Exh.
Mechanical Camshafts For Drag Racing
Good Mid/Upper Range Torque
And HP, 11.0-12.5:1 Comp. Ratio, CRN364681 CRN99257-16 3200-7000 11.0-12.5:1 244° 252° 280° 288° 108° .026" .026" .553" .572"
Race Converter
1: Requires cam button spacer. Cam has an integral cast iron distributor 4: Ultra Pro Series vertical locking bar roller lifters.
drive gear. For engines with mechanical fuel pumps, fuel pump pushrod 7: Ultra Pro Series vertical locking bar roller lifters for .904" dia. lifter bores.
CRN11985-1 is recommended to prevent fuel pump lobe wear.
BB CHEVY NOTES:
1991-95 Gen. V engines can use these camshafts and components if the lifter preload is checked, or they are converted to adjustable rocker arms.
Machine the cylinder heads for screw-in 7/16" studs CRN99157-16 and pushrod guideplates CRN13650-1 and install appropriate rocker arms. For 1965-
66 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 on
engines where exhaust valve rotators have been eliminated, spring spacers CRN99459-8 or four valve spring retainers CRN99948-2 must be used 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.

Cam Lock Plate And Bolt Kit Valvetrain Organizer Tray
CRN99168-1 CRN99015-1
Prevents cam timing sprock et bolts Lightweight tray accepts rock ers,
from coming loose. Fits 90° V6 Chevy, pushrods, adjusting nuts, lifters, and
SB and BB Chevy 1957-95. spark plugs. Keeps valvetrain parts in
the cor rect order for proper replace-
ment in the en gine.
Vacuum Reserve System
CRN99590-1 Camshaft Buttons
And Thrust Bearings
Radical cams reduce vacuum, causing
power brake problems on street/strip cars. Prevents roller cam shaft “walk ing” dur ing en-
Compact 5" x 7" canister’s one-way check gine op er a tion. Unique ly designed roll er bear ing
valve stores vacuum until it’s needed. Com- reduces bind ing at the cam nose, elim i nat ing
plete with fittings. horse pow er rob bing friction. Alu mi num buttons
are also available.
Aluminum Roller
De scrip tion Part No. Part No.
Chevrolet V8 262 thru 400, 90° V6 CRN99001-1 CRN99164-1
Chevrolet V8 396 thru 454 CRN99005-1 CRN99165-1
Chrysler V8 “B” And 426 Hemi With 3-Bolt Gear CRN99163-1 —

220