Sale
CAMSHAFT,364-425 287T H-107 T THUMPR (91-601-5)
036584213284
$299.28
MSRP
$325.95
You save $26.67
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In Stock
Compatibility
- Platform
- Universal
- Vehicle-specific fitment
- Review application details below
- Need help?
- Confirm fitment with us before ordering — (714) 202-7886
We list the engine platform a part is built for. That is not year-and-trim application data, so it does not confirm a fit on your specific vehicle.
- Est. install labor: 11.0 hrs — $1,375 at $125/hr. Pick Install at HRC and a 20% labor deposit ($275) is due at checkout; the balance is due at completion.
- An estimate for a stock vehicle, not a quote — we confirm it in writing when you book, before any labor is authorized. Seized hardware, prior modifications, diagnosis and machine work are quoted separately; tuning is arranged through our tuning partner. Questions: (714) 202-7886.
- Warranty & track disclaimer — read before you race it.
- Shipping & returns — rates and RMA terms.
- Installed in-house in Huntington Beach, CA — labor & service policy.
- Affirm and PayPal available at checkout.
More ways to pay at checkout
Classic Mutha' Thumpr 227/241 Hydraulic Flat Cam Buick 364, 401, 425 Nailhead. Street/strip, needs 9:1 compression, 2500+ stall, intake, Gears and headers, very rough idle.
| Part Type | Engine Camshaft |
|---|---|
| Camshaft Series | Classic Thumpr |
| Usage | Street/Strip |
| Cam Type | Hydraulic Flat Tappet |
| Grind Number | 287TH7 |
| Basic Operating RPM Range | 2,200-6,100 RPM |
| Intake Duration at .050 Inch Lift | 235° |
| Exhaust Duration at .050 inch Lift | 249° |
| Advertised Intake Duration | 287° |
| Advertised Exhaust Duration | 305° |
| Lobe Separation | 107° |
| Intake Valve Lift | 0.49" |
| Exhaust Valve Lift | 0.475" |
| Lifters Included | No |
| Valve Springs Required | Yes |
| Assembly Lubricant Included | Yes |
| Camshaft Material | Cast Iron |
| Engine Family | Buick Nailhead 364, 401, 425 c.i. 8 Cylinder (1957-1966) |
| Lifter Type | Hydraulic Flat Tappet |
| California Proposition 65 | WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov |
| Title | Classic Mutha' Thumpr 227/241 Hydraulic Flat Cam Buick 364, 401, 425 Nailhead |
| Amazon ASIN | B005H89RKO |
| 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. 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 California Certified Vehicles Manufactured Before 1965? | 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. Exemption Reason | N/A |
| 10602 | 287TH7 |
| C.A.R.B. E.O. Number | N/A |
| Weight | 7.547 lb |
| UPC | 036584213284 |
| Country of Origin | USA |
Verified fitment · 131 applications
- Buick Century Base 6.0L (1957–1958)
- Buick Electra 225 6.6L (1959–1962)
- Buick Electra Base 6.6L (1959–1966)
- Buick Electra Base 7.0L (1964–1966)
- Buick Electra Custom 6.6L (1966)
- Buick Electra Custom 7.0L (1966)
- Buick Estate Wagon Base 6.0L (1959–1961)
- Buick Estate Wagon Base 6.6L (1959–1964)
- Buick Estate Wagon Base 7.0L (1964)
- Buick Gran Sport Base 6.6L (1965–1966)
- Buick Invicta Base 6.6L (1959–1963)
- Buick LeSabre Base 6.0L (1959–1961)
- Buick LeSabre Base 6.6L (1959–1964)
- Buick LeSabre Base 7.0L (1964)
- Buick Limited Base 6.0L (1958)
- Buick Riviera Base 6.6L (1963–1965)
- Buick Riviera Base 7.0L (1963–1966)
- Buick Riviera Gran Sport 7.0L (1965–1966)
- Buick Roadmaster 75 6.0L (1957)
- Buick Roadmaster Base 6.0L (1957–1958)
- Buick Skylark Base 6.6L (1965–1966)
- Buick Special Base 6.0L (1957–1958)
- Buick Super Base 6.0L (1957–1958)
- Buick Wildcat Base 6.6L (1962–1966)
- Buick Wildcat Base 7.0L (1964–1966)
- Buick Wildcat Custom 6.6L (1965–1966)
- Buick Wildcat Custom 7.0L (1965–1966)
- Buick Wildcat Deluxe 6.6L (1965)
- Buick Wildcat Deluxe 7.0L (1965)
- Buick Wildcat Gran Sport 6.6L (1966)
- Buick Wildcat Gran Sport 7.0L (1966)
| Part No. | 91-601-5 |
|---|---|
| Brand | COMP Cams |
| Part Type | Engine Camshaft |
| Weight | 7.547 lb |
| UPC | 036584213284 |
| Country of Origin | USA |
Platform-level fitment (Ford + GM, Phase 1). We publish the engine platform a part is built for — not year-and-trim application data — so nothing here confirms a fit on a specific vehicle. Confirm fitment with us before ordering: (714) 202-7886.