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Mutha' Thumpr 235/249 Hydraulic Flat Cam for AMC 290-401

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UPC:
00036584212751
Availability:
This part ships direct from the manufacturer, lead times, stock and shipping may vary.
Weight:
10.50 LBS
$351.32

#SAVETHEFULLSIZEJEEP

A Portion Of The Proceeds From Your Purchase Supports The Development & Reproduction Of High Quality 1963-1991 Restoration Parts.

Mutha' Thumpr 235/249 Hydraulic Flat Cam for AMC 290-401

Mutha' Thumpr 235/249 Hydraulic Flat Cam for AMC 290-401

$351.32
High performance street/strip, needs 9:1 compression, 2500+ stall, intake, gears and headers, rough idle.

Installation Instructions

Installation Instructions



This Part Fits:

YearMakeModelSubmodel
1974-1975JeepCherokeeBase
1976JeepCherokeeBase
1977JeepCherokeeBase
1978-1983JeepCherokeeBase
1981-1982JeepCherokeeChief
1983JeepCherokeePioneer
1974-1977JeepCherokeeS
1978-1980JeepCherokeeWide Track
1984-1991JeepGrand WagoneerBase
1984-1985JeepGrand WagoneerLimited
1971JeepJ-100Base
1972-1973JeepJ-100Base
1970JeepJ-2500Base
1971JeepJ-2500Base
1972-1973JeepJ-2500Base
1970JeepJ-2600Base
1971JeepJ-2600Base
1972-1973JeepJ-2600Base
1970-1971JeepJ-3800Base
1971JeepJ-4500Base
1972JeepJ-4500Base
1973JeepJ-4500Base
1971JeepJ-4600Base
1972JeepJ-4600Base
1973JeepJ-4600Base
1971-1973JeepJ-4700Base
1971-1973JeepJ-4800Base
1974JeepJ10Base
1975JeepJ10Base
1976JeepJ10Base
1977-1988JeepJ10Base
1974JeepJ20Base
1975JeepJ20Base
1976JeepJ20Base
1977JeepJ20Base
1978-1988JeepJ20Base
1972-1974JeepWagoneerBase
1975-1976JeepWagoneerBase
1977JeepWagoneerBase
1978JeepWagoneerBase
1979-1982JeepWagoneerBase
1982-1983JeepWagoneerBrougham
1973-1974JeepWagoneerCustom
1975JeepWagoneerCustom
1976JeepWagoneerCustom
1979-1983JeepWagoneerLimited


Advertised Exhaust Duration304
Advertised Intake Duration287
ApplicationsFits AMC 290, 304, 343, 360, 390 and 401
Assembly Lubricant IncludedYes
Basic Operating RPM Range2,200-6,100
C.A.R.B. E.O. NumberN/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 ReasonN/A
California Proposition 65WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov
Cam and Lifter Kit UpgradeCL10-603-5
Cam TypeHydraulic Flat Tappet
Camshaft Gear Attachment1-Bolt
Camshaft MaterialCast Iron
Camshaft SeriesThumpr
DescriptionHigh performance street/strip, needs 9:1 compression, 2500+ stall, intake, gears and headers, rough idle.
Engine FamilyAmerican Motors 290-401 c.i. 8 Cylinder (1966-1991)
Exhaust Duration at .050 inch Lift249
Exhaust Valve Lift0.486
Grind Number287TH7
Intake Duration at .050 Inch Lift235
Intake Valve Lift0.5
K-Kit UpgradeK10-603-5
Lifter TypeHydraulic Flat Tappet
Lifters IncludedNo
Lobe Separation107
UsageStreet/Strip
Valve Springs RequiredYes

To submit a return or exchange request, please go to our Contact Us page to submit order information. Photos of any damaged products may be requested and required to process any full or partial refund. If approved, we will provide you with an RMA number along with a return label for shipping.

Parts returned that are not defective, are subject to a 25% restocking charge. JeepRecyclers.com/McDaniel Motor Co. is NOT responsible for any parts that have been altered, modified, disassembled, or damaged by misuse or an accident subsequent to the parts purchase.

Reconditioned parts come with a minimum warranty of 90 days, unless otherwise stated (Refer to product listing for warranty duration). The warranty is void if the parts are not returned in the same condition in which they are sold. Warranties for aftermarket parts are covered by the manufacturer.

What Are My Shipping Fees?

For orders delivered within the continental US where reason for return isn't a result of a JeepRecyclers.com/McDaniel Motor Co. error, the cost of the initial shipping charge and a return fee will be deducted from your refund. A prepaid shipping label(s) will be provided. The flat fee for each item being returned can be found in the chart below:

Retail cost of the item Per Item Return Fee
Less than $25.00 $3.75
From $25.00-$49.99 $5.75
From $50.00-$99.99 $7.75
More than $100.00 $9.75

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