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COMP Cams Big Mutha" Thumpr Hydraulic Flat Tappet Camshaft Lift .500"/.486" Duration 295/313 RPM Range 2500 to 6400

249-12-602-4


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Big Mutha" Thumpr Hydraulic Flat Tappet Camshaft Lift .500"/.486" Duration 295/313 RPM Range 2500 to 6400
$272.95
4 left in stock
Big Mutha' Thumpr Hydraulic Flat Tappet Camshaft
Lift .500"/.486"
Duration 295/313
RPM Range 2500 to 6400
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12-602-4 - Comp Cams Thumpr Hydraulic Flat Tappet Cams is rated 5.0 out of 5 by 2.
Rated 5 out of 5 by from Very happy good sounds great performance Put it in my 54 bel air
Date published: 2020-02-15
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I just purchased the cam and lifter kit from here but I’m wondering what springs I need to order. It says nothing about the springs although it does say they are required but nothing else. 

Asked by: Anonymous
The Comp 249-12-602-4 camshaft uses Comp 986-16 valve springs.
Answered by: jshook
Date published: 2023-03-07

What kind of vacuum should I expect out of this cam. 

Asked by: Drew
Comp Cams does not have a stated amount of vacuum on the 249-12-602-4 camshaft.
Answered by: jshook
Date published: 2023-03-07

With this cam do you have to get bigger valve springs?

Asked by: Jim22
The Comp 249-12-602-4 camshaft requires a double valve spring.
Answered by: jshook
Date published: 2022-11-23

Will it work with 194/150 heads that have been ported polished with double valve springs

Asked by: Clyde
The 249-12-602-4 Comp Cam should work fine. We recommend setting the spring pressure to match the requirements of the cam.
Answered by: jshook
Date published: 2023-10-24

Will this cam fit 1986 Chevrolet caprice classic

Asked by: Nick31
This will fit if your engine is a hydraulic flat tappet engine. You will need some other valvetrain components to make it work
Answered by: Rusty B
Date published: 2018-06-18

Will this cam work in stock 95 GMC Sierra 350 5.7liter 

Asked by: john1995
This cam is not compatible with your stock engine.
Answered by: Jon Jegs Tech
Date published: 2019-01-10

Does this come with lifters?

Asked by: Kutsuju
This does not include lifter. You would want part #CL12-602-4
Answered by: Dean R
Date published: 2024-01-29
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