Fits '87+ GEN 1 Chevrolet 305-350 Small Blocks w/ Factory Roller Camshafts (Not LT-1/LS1 etc)
Notes- Fits only 1987 and newer blocks that have provisions (spider tray) for a roller camshaft.
Documents
Attributes
Camshaft Series: | Thumpr |
Usage: | Street/Strip |
Cam Type: | Hydraulic Roller |
Grind Number: | 299THR7 |
Basic Operating RPM Range: | 1,900-5,600 R3 |
Intake Duration at .050 Inch Lift: | 243 DD |
Exhaust Duration at .050 inch Lift: | 257 DD |
Advertised Intake Duration: | 299 DD |
Advertised Exhaust Duration: | 319 DD |
Lobe Separation: | 107 DD |
Intake Valve Lift: | 0.533 IN |
Exhaust Valve Lift: | 0.519 IN |
Valve Springs Required: | Yes |
Camshaft Gear Attachment: | 3-Bolt |
Camshaft Material: | Austempered Ductile Iron |
Title: | Big Mutha' Thumpr 243/257 Hydraulic Roller Cam for OE Roller SBC |
California Proposition 65: | WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov |
Cam and Lifter Kit Upgrade: | CL08-602-8 |
Cam, Lifter and Gear Drive Upgrade: | GK08-602-8 |
Lifter Type: | Hydraulic Roller |
Engine Family: | Chevrolet 305-350 c.i. 8 Cylinder O.E. Roller (1987-1998) |
K-Kit Upgrade: | K08-602-8 |
Amazon ASIN: | B002EDWNQ0 |
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. Exemption Reason: | N/A |
C.A.R.B. E.O. Number: | N/A |
Package Information
Orderable Status:YesQuantity:1Package UOM:Smallest Pack (Consumer Level)Package Level GTIN:00036584171997Package Bar Code:036584171997Weight Variance:0.000000000Stacking Factor:0Inner Quantity:1 Each
Extended Information
Core Return Days to Expiry:0Country of Origin (Primary):USEmission Code:Not in CAHarmonized Tariff Code (HTS):8409914000Harmonized Tariff Code (Schedule B):8409914000Life Cycle Status Code:Available to OrderLife Cycle Status Description:Available to OrderMSDS Required Flag:NoMSDS Sheet Number:N/ANAFTA Preference Criterion Code:Criteria BNational Popularity Code:Top 60% of Product Group Sales Value (Units x $, Hits, etc.)National Popularity Description:Top 60% of Product Group Sales Value (Units x $, Hits, etc.)OEM’s Part Number:NOriginal Equipment Manufacturer:NOriginal Supplier:NOriginal Supplier Part Number:NPart Number – Old:N/APart Number Superseded To:N/ARefurbished Part:NoRemanufactured Part:NoStock Status:Shelf StockTaxable:YesWarranty Time:12Warranty Time UOM:Month