Camshafts

“Dedicated to excellence, Erson Cams offers a commitment to quality and         ingenuity that will keep you in the Winner’s Circle!”

•Quality - Erson Cams has unsurpassed quality control standards, precise cam grinding and testing resulting in a Superior Camshaft!                                                     

•Special Services - Custom camshaft design and grinding. Custom cam journals,roller bearing and bushing 1.875, 1.9487, 50mm, 55mm & 60mm, 4-7 firing order swap.  Professional design recommendations.

CUSTOM CAMSHAFTS ARE OUR SPECIALTY

BENEFITS OF ERSON'S PREMIUM ROLLER CAM CORES: •8660 STEEL CORE WITH RADIUS BETWEEN LOBES •EVERWEAR DISTRIBUTOR GEAR •ALTERED FIRING ORDERS 4-7 SWAP & 4X7X3X2 •STANDARD CAM JOURNAL •1.875 ROLLER BEARING JOURNAL •1.949 BIG BLOCK ROLLER BEARING JOURNAL •50MM 1.969 ROLLER CAM JOURNAL •55MM 2.165 ROLLER CAM JOURNAL

AMC

199-258 L6 1964-1997

290/304/343/360/390/401 cubic inch V8 1966-1992

Buick

CAUTION: Do not attempt to operate an engine with less than .150” retainer-to-guide clearance. If you are using valve seals, check the clearance from the top of the seal rather than the top of the guide.

CAUTION: Due to the unusual chamber design in the Buick cylinder head, valve-to-piston interference is always a problem. We recommend checking clearance on any camshaft of 290 degrees of duration or more.

WARNING--Some early Buick engines used 11/32” valve stems with 11° steel retainers. Only use matched components. Failure to do so may
result in serious engine damage.

181/196/231/252CID V6 1978-1987 (even Fire w/integral dist. drive gear)

1961-67 BUICK 215-300-340 CID / 1968-94 ROVER 215/3.5L 240/3.9L 256/4.2L

CAUTION:
Not all optional high-performance parts for early Buick, Oldsmobile and Rover engines are interchangeable. Please call Erson’s Technical Service Team at 775-882-1622 for assistance selecting additional components

WARNING--
Some early Buick engines used 11/32” valve stems with 11° steel retainers. Only use matched components. Failure to do so may result in serious engine damage.

TECH TIP:
When installing these cams, valve-to-piston clearance must be checked as there is a possibility of valve-to-piston interference. We recommend .080” intake and .100” exhaust minimum clearance.

1967-76 400/430/455 CID V8

TECH TIP:
When installing a hydraulic lifter racing camshaft in an engine that does not have adjustable rocker arms, care must be taken to ensure that the lifter is still able to adjust itself. If the camshaft has more than .500” valve lift or the heads or block have been milled excessively, the engine must be converted to adjustable rockers or adjustable pushrods.

CAUTION:
 Due to the unusual chamber design in the Buick cylinder head, valve-to-piston interference is always a problem. We recommend checking clearance on any camshaft of 290 degrees of duration or more.

1968-80 350 CID “H”, “J” SERIES

TECH TIP:
When installing these cams, valve-to-piston clearance must be checked as there is a possibility of valve-to-piston interference. We recommend .080” intake and .100” exhaust minimum clearance.

WARNING--
Some early Buick engines used 11/32” valve stems with 11° steel retainers. Only use matched components. Failure to do so may result in serious engine damage.

NOTE:
It may be necessary to use stock OEM style valve locks due to an atypical 11° taper at the retainer.

NOTE:
Late Model Buick 350 cubic inch V8 engines have several different valve spring installed heights. The two most common are 1.727” and 1.670” using a 1.300 O.D. spring. For assistance, in selecting these and other Buick valvetrain components, call Erson’s Technical Service Team at 775-882-1622.

1975-77 231 CID DAUNTLESS ODDFIRE

1.53:1 STOCK ROCKER RATIO

1977 1/2-88 196-231-252 CID EVENFIRE

1.55:1 STOCK ROCKER RATIO

Cadillac

1968-84 368/425/472/500 CID V8

Camshaft Kits

ENERGIZE YOUR PERFORMANCE!  ERSON CAMSHAFTS ARE DESIGNED TO DELIVER THE MOST USEABLE POWER & RELIABILITY FROM LOW RPM TORQUE TO HOT STREET & STRIP PERFORMANCE. PUT THE ENERGY BACK IN PERFORMANCE WITH ENERGY HYDRAULIC FLAT TAPPET CAMS AND LIFTER KITS.

ALL CAM KITS COME ATTRACTIVELY PACKAGED WITH CAMSHAFT, LIFTERS AND ASSEMBLY LUBE.

Big Block Chevrolet

Small Block Chevrolet

Chevrolet

1962-84 194/230/250 CID V6

1978-84 200-229 CID V6 (90° ODD Fire)

CAUTION:
When using high-pressure springs (springs having more than 130 pounds of seat load or more than 330 pounds of nose load) with a flat tappet camshaft, Erson Cams requires that you break the camshaft in for 30 minutes while using just the outer spring. Only after the break-in period should the inner spring be installed. Following this procedure will greatly reduce any chance of camshaft or lifter failure.

1985-86 262 cubic inch (4.3L) V6 (90° ODD Fire)

1987-97 262/4.3L CID

1990-94 189( 3.1L) V6 / 1980-89 173( 2.8L) V6

292 CID TRUCK INLINE 6 CYL

SBC 1955-1995 NON-ROLLER

262/265/267/283/302/305/307/327/350/400 CID V8
NON-ROLLER

Drag Race Competition Roller Camshafts

Energy Plus Series Camshafts

ENERGIZE your performance. Erson Camshafts are designed to deliver the most useable Power & Reliability from low RPM torque to Hot Street & Strip performance.

Big Block Chevrolet

Ford 351W/HO 302

Small Block Chevrolet

Small Block Ford

FORD

351W

HR ENERGY PLUS 4-7 SWAP HYDRAULIC ROLLER CAMSHAFTS

THE CAM PROFESSIONALS AT ERSON CAMS HAVE DEVELOPED THE FIRST 4-7 SWAP FIRING ORDER HYDRAULIC ROLLER CAMSHAFT SERIES FOR THE SMALL BLOCK AND BIG BLOCK CHEVROLET. ERSON CAMS, A LEADER IN VALVE TRAIN DESIGN BRINGS THE LATEST IN CAM TECHNOLOGY TO THE STREET WITH ITS HI REV/HI TECH SERIES OF HYDRAULIC ROLLER CAMSHAFTS AVAILABLE WITH STANDARD FIRING ORDER OR 4-7 SWAP. REAP THE BENEFITS OF FASTER ACCELERATION, SMOOTHER PERFORMANCE AND BETTER FUEL DISTRIBUTION...CALL ERSON CAMS NOW FOR ALL THE DETAILS.

SMALL BLOCK CHEVROLET 262-400 CI 8 CYL HYDRAULIC ROLLER RETRO-FIT 1955-87

HR Engery Plus Std Firing Order Hyd Roller Camshafts

Small Block Chrvrolet 262-400 Cid 8 Cyl Retro-Fit 1955-87

Mechanical Roller Camshafts - Oval Track

CHEVROLET 1955-97 262-400 CU IN 50MM 1.968 ROLLER CAM

ERSON'S NEW RXR .422 PROFILES DELIVER HIGH RPM HP USING HIGH ROCKER RATIOS 1.7, 1.8 AND 1.9 WITH LESS DYNAMIC STRESS FOR RELIABLE OPERATION. ERSON'S RXS .430B PROFILES WORK WELL ON THE EXHAUST. LISTED BELOW ARE BASELINE CAMSHAFTS, CUSTOM GRINDS ARE AVAILABLE WITH OTHER JOURNAL SIZES. OPTIONAL FIRING ORDERS, 4-7 SWAP, 18736542 4-7-3-2-C FIRING ORDER, 18726543. RXR .422 GROSS VALVE LIFT 1.6=.675, 1.7=.718, 1.8=.760, 1.9=.802.

Cams listed below are with 50mm cam journal and STD firing order

Oval track FXR Series Flat Tappet Camshafts Std firing Order

Oval Track FXR Series Flat Tappet 4-7 Swap

CHEVROLET 1955-98 262-400 CUBIC INCH .375 LOBE LIFT CALCULATED WITH 1.5 ROCKER RATIO

FXR LOBE PROFILES ARE DESIGNED WITH MORE AREA UNDER THE CURVE WITH A MORE AGGRESSIVE OPENING RATE AND YET MAINTAINING VALVE TRAIN STABILITY. THESE PROFILES OFFER A SUBSTANTIAL INCREASE INHP AND TORQUE OVER CONVENTIONAL DESIGNS. HIGHER ROCKER ARM RATIO MAY BE USED 1.6 RATIO = .600 GROSS LIFT. ALL CAMS AVAILABLE WITH 4-7 SWAP FIRING ORDER 18736542. BELOW IS A PARTIAL LISTING OF OUR FXR CAMSHAFTS.

Oval Track Roller Camshafts

Chevrolet SMALL BLOCK V8 262-400CID ENGINES

Lift calculated with 1.5 ratios. Cams are designed for high rocker ratios, can be used with 1.6, 1.7 and 1.8 rockers. Camshafts are made from alloy steel billet.

Stroker Power Hydraulic Camshafts

SMALL BLOCK CHEVY V8
1957-94  262/305/350/400 CID Hydraulic Flat Tappet Engines

Small Base Circle for Stroker Applications

_Cam Cards

List of Erson Camshaft Cam Cards.
Please click on cam number to download the pdf file.