Advertised Exhaust Duration |
296 |
Advertised Intake Duration |
278 |
Amazon ASIN |
B0046ZLFSQ |
Assembly Lubricant Included |
Yes |
Basic Operating RPM Range |
2,000-5,800 |
C.A.R.B. E.O. Number |
N/A |
C.A.R.B. Exempt for California Certified Vehicles Manufactured Before 1965? |
Yes, but must meet tailpipe emission standards for year of vehicle. |
C.A.R.B. Exempt for Federally Certified Vehicles Manufactured Before 1967? |
Yes, but must meet tailpipe emission standards for year of vehicle. |
C.A.R.B. Exempt for Foreign Vehicles Manufactured Before 1967? |
Yes, but must meet tailpipe emission standards for year of vehicle. |
C.A.R.B. Exempt for On-Road Vehicles? |
No |
C.A.R.B. Exempt for Racing and Off-Road Only Vehicles? |
Yes, but must be a race/competition only vehicle. |
C.A.R.B. Exemption Reason |
N/A |
California Proposition 65 |
WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov |
Cam Type |
Hydraulic Flat Tappet |
Camshaft Material |
Cast Iron |
Camshaft Series |
Thumpr |
Description_ASM |
Fits 1967+ Oldsmobile 260, 307, 350, 403, 400, 425 and 455 V8 |
Description_DEF |
Engine Camshaft Kit |
Description_DES |
10 Superlock Steel Retainer Set of 16 for 1.437"-1.500" OD Valve Spring |
Description_DES |
Engine Valve Spring Kit |
Description_DES |
High Energy Hydraulic Flat Lifters for Oldsmobile 260-455 and Pontiac 265-455 |
Description_DES |
Magnum Double Row Timing Set for '65-'83 Oldsmobile 260-455 |
Description_DES |
Set of 16 - 10 Degree, 11/32", Single Groove Locks w/ Lash Cap Recess |
Description_DES |
Set of 16 PTFE Valve Seals for .530" Guide Size, 11/32" Valve Stem |
Description_DES |
Thumpr 226/241 Hydraulic Flat Cam for Oldsmobile 260-455 |
Description_DES |
Thumpr 226/241 Hydraulic Flat Cam K-Kit for Oldsmobile 260-455 |
Description_EXT |
High performance street, stock converter ok, best with 2000+ converter and gears. Choppy/thumping idle. |
Description_INV |
Thumpr 226/241 H-Flat K-Kit Olds 260-455 |
Description_KEY |
260 |
Description_KEY |
307 |
Description_KEY |
350 |
Description_KEY |
400 |
Description_KEY |
403 |
Description_KEY |
425 |
Description_KEY |
442 |
Description_KEY |
455 |
Description_KEY |
88 |
Description_KEY |
98 |
Description_KEY |
Calais |
Description_KEY |
Ciera |
Description_KEY |
Custom Cruiser |
Description_KEY |
Cutlass |
Description_KEY |
Cutlass Supreme |
Description_KEY |
Delta 88 |
Description_KEY |
Firenza |
Description_KEY |
Olds |
Description_KEY |
Oldsmobile |
Description_KEY |
Rocket |
Description_KEY |
Rocket 88 |
Description_KEY |
Starfire |
Description_KEY |
Vista Cruiser |
Description_MKT |
K-KIT - Complete Kit Includes: Camshaft, Lifters, Valve Springs, Retainers, Valve Locks, Valve Stem Seals, Timing Chain Set, Assembly Lube (in flat tappet applications), Decals and Instructions. |
Description_SHO |
Engine Camshaft Kit |
Description_SHP |
None |
Engine Family |
Oldsmobile 260-455 c.i. 8 Cylinder (1967-1990) |
Exhaust Duration at .050 inch Lift |
241 |
Exhaust Valve Lift |
0.476 |
Gaskets Included |
No |
height |
5.0 |
Intake Duration at .050 Inch Lift |
226 |
Intake Valve Lift |
0.491 |
Kit Type |
K-Kit - Complete Kit |
length |
26.0 |
Lifter Type |
Hydraulic Flat Tappet |
Lifters Included |
Yes |
Lobe Separation |
107 |
LTL |
N |
Title |
Thumpr 226/241 Hydraulic Flat Cam K-Kit for Oldsmobile 260-455 |
Usage |
Street/Performance |
Valve Springs Included |
Yes |
weight |
26.25 |
width |
10.5 |