The Mopar purple shaft cams designed years ago are no where near as good as some other grinds the bigger cam company are making now
As already pointed out we need more information on your car and its running gear to give you a good guess

You can cheat on the 284/484 and run the rhoads high bleed lifters with a stock vert.

Its a 9/1 compression with stock iron heads , 323 rear gears and a 727 auto trans.
I bought a edelbrock rpm manifold for it replacing the stock one and possibly a holley 750 replacing the edelbrock 650 on it.

This is a street car that im looking at doing some mild upgrades to it and looking for advice on cam selection that's got a nice idling sound to it that will perform.

it was mentioned a Comp 268H , 270H , ex268 however I have no idea what that means. I looked up Comp Cam 270H and it came up as a Chevrolet cam...be easy on me Im learning lol

it was mentioned a Comp 268H , 270H , ex268 however I have no idea what that means. I looked up Comp Cam 270H and it came up as a Chevrolet cam...be easy on me Im learning lol

Go to the Comp Cams web site, click on products, click on camshafts, hover over AMC/CHRYSLER/DODGE and click on Big block 383-440. When the next page opens look through the hydraulic flat tappet camshafts choices and you will find the suggested cams.

Hmm mine must have been an oddball. Didn't have any of those problems. Idled well ran power brakes with no problem, ran about 2600 stall, stock 906 heads. I ran 3.23 gears for several yrs. Compression 9.5,Intake Holley street dominator. Carbs AVS, AFB , Holleys all worked well. Actually liked the holley 750 dbl pumper best. When I decided to add a little more gear I ran it at the track and had a best of 12.80 at close to 3700lbs.

[quote=EV2Bird] You can cheat on the 284/484 and run the rhoads high bleed lifters with a stock vert. [/quote

^^^ This will help.

I have a question that is related. Its 2019- How does one get a hyd flat tappet system to last like in the 70s and 80s? I know about correct oil but should I buy Tool Steel lifters? Regular lifters but with the EDM oiling hole? Many knowledgeable people running all makes have flattened a lobe in recent times.

I think its really a crapshoot, I like to find vintage cams with gentle lobes that were known to work.

Most will say normal edm lifters is your best bet, I rather think some might step up to a better cam like a hydro roller for the street.

Nothing like skidding metal off of metal and expecting good results every time, not.

Ran the Cam Dyna. 484 lift in my runner. Runner 440-6 four speed 410. I knew this cam had lower vac but a lumpy idle. The Runner had factory 6 pack intake and carbs, headers, better ignition and no Power B-S when I ran this cam. The Runner ran 13.01 all stock and I wanted to go deep into the 12s or high 11s for a street car. I had a race car and wanted to have some fun on the street and not get beat every weekend so these few changes made that work back in the early 80s. One friend of mine has used all the mopar cams in his 1968 Charger all stock with 355s and 2500 convertor. All three cams ran OK but the 484 and 509 wanted a few more changes like intake and carb and headers. He still has the 509 in the car now but runs an aftermarket intake and carb. You have to play a little if you want the higher RPM cam to work but all these cams have there purpose.

Dragula I have a few cams much like the one in your link and these 484 509 cams are just puppies compared to the link but they are a good street use cam that works pretty good.