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Engine Family Chrysler 383-440 c.i. 8 Cylinder (1959-1980) RPM Operating Range 2,000-5,800 Cam Type Hydraulic Flat Tappet Camshaft Series Thumpr Usage Street/Performance California Proposition 65 WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov Advertised Intake Duration 279...

Maybe if you tell us your complete drivetrain and what you want out of it we can better help you. If you have a low compression motor and want it to sound nasty then this may be the cam for you. I don't generally like to see that much of a split in duration but it may work in certain setups.

My first thought would be why do you think this is the right cam for you?

Headers are my preference in the quest for the most my engine could produce. That being said if I had a car with manifolds and it needed nothing then I would have no problem running them. I would also rather have a better intake manifold and better heads with manifolds than stock heads and...

You have a 24.1" tall tire now.How much room do you have to grow up? 225/70 is 27.4 and 235/70 is 27.8, that is a lot of room to grow. Mind your width on the rear also. If it doesn't have a enough room maybe a 215/65/15(26") on the front and a 225/70/15(27.4) on the rear will work. Hopefully...

Nice Belvedere! I would think a 4" backspace would work also but measuring is your friend. What size tires are on there now?

Love it !

I would degree the cam before I did anything else.

You didn't say what heads will be used? I would want to know that before I picked a cam.

A street dominator and some 1 7/8 headers would put you right up there.Just the intake swap would be worth a comparison.

I like a lot of the Howards cams specs I see. With a good set of heads don't know that it would want that much extra exhaust duration though. I am about to do a similar pump gas build with a 4.25 stroke crank and I have cnc ported edlebrocks. Trying to decide if I want hyd or solid roller. I...

550hp would be my guess. On the street it may like a 1 7/8 header more unless you have deep gears and a stall.

The cam you have should make good low end. It is not a " large " cam. I would degree it and see where it is. Installing it at the recommended centerline if it is retarded should improve low end and midrange.

Or put a pair of glasspacks before the mufflers.I would be surprised if the drone isn't gone.

Oversight on my part. They made the same cam for big blocks as well.

Hydraulic Flat Tappet Camshaft; 1959 - 1980 Chrysler 383-440 1600 to 5400 Howards Cams 721141-08 | Howards Cams Hydraulic Flat Tappet Street Force 2 Camshaft; 1959 - 1980 Chrysler 383-440 1400 to 5200 Howards Cams 720031-12 | Howards Cams Mopar Hydraulic Flat Tappet Camshaft

Go with the aluminum heads regardless. Advancing the cam generally raises cranking compression. Someone smarter than me will be along with the math.

Very nice. Will keep it in mind although mainly looking for an assembled shortblock. Already have a 4.25 stroke crank if I decide to build.

Just about ready to do a bb stroker for my Duster. Before building I thought I would see if anyone has a shortblock with a 4.15 or 4.25 stroke crank ready to go. Would consider a low deck with 3.91 stroke crank as well. I have the top end already. Pump gas motor as this is a street car. Cam is...

If you are building for torque you have a good start. I will say any work you do to the heads will be returned an power/torque everywhere. For something with a good idle and plenty of vacuum something like the comp xe274 will have a stock idle,use stock rockers if needed and make torque...