383 Mopar Purple Cam

[That_1_71_Dodge]

Hello, I have a 383 Mopar that I am completely rebuilding, we are planning to put in a Purple Cam which should be a step higher than the stock one. If we do this would we have to change the pistons or would stock work better? I did some research and I believe the compression ratio for a 383 Mopar is 9.5.1, not 100% sure. I also read that it's recommended to keep stock pistons because otherwise, it'll run crappy unless running a high idle with a purple cam. If someone can let me know whether to keep stock pistons or get a different kind? Thank you

 

[R413]

They have dozens of different "purple cams". Ranging from mild to full race. Can you supply some specifications on the one you want?

 

[Curiousyellow71]

What year of 383? 68-69 had high compression pistons. Heads also changed through the years affecting the compression.

 

[493 Mike]

No commonly used pistons should make an engine run "crappy". Too much cam will.
Mike

 

[icetech]

Hello, I have a 383 Mopar that I am completely rebuilding, we are planning to put in a Purple Cam which should be a step higher than the stock one. If we do this would we have to change the pistons or would stock work better? I did some research and I believe the compression ratio for a 383 Mopar is 9.5.1, not 100% sure. I also read that it's recommended to keep stock pistons because otherwise, it'll run crappy unless running a high idle with a purple cam. If someone can let me know whether to keep stock pistons or get a different kind? Thank you

Depends what you are looking for exactly.. but i will say i ran a .484 purple shaft and it was by far my favorite cam i ran.. decently drivable and pulled great. I switched to a .509 in the same car and hated it soo much after that

 

[BeepBeepRR]

Mancini is selling their Purple cams in these flavors.

B/RB 361-440, 474/280 Hyd Flat Tappet

B/RB 361-440, 284/484 Hyd Flat Tappet

B/RB 361-440, 292/509 Hyd Flat Tappet

B/RB 361-440, 312/590 Mechanical Tappet

 

[AR67GTX]

Back about 1970 I put a 280 degree Crowler (I think) cam in my 64 Sport Fury 383 and it really hurt it off the line. I’m not sure a bit more compression will help much. More like better heads and looser converter or bit better gearing.

 

[BeepBeepRR]

I just purchased the 284/484 for the 440 I'm putting together. I'm currently waiting on the cam which was 4 weeks out. They didn't say that on the site when I paid for it.
I assume they get them in batches of 10 or so.

 

[RemCharger]

Mancini is selling their Purple cams in these flavors.

B/RB 361-440, 474/280 Hyd Flat Tappet

B/RB 361-440, 284/484 Hyd Flat Tappet

B/RB 361-440, 292/509 Hyd Flat Tappet

B/RB 361-440, 312/590 Mechanical Tappet

That .590 will reeeeeally wake it up!
after 5500 rpm.

 

[That_1_71_Dodge]

They have dozens of different "purple cams". Ranging from mild to full race. Can you supply some specifications on the one you want?

Oh yes sorry, it's going in a 1971 dodge charger and I don't want a racing cam. More of just a step or two up from the stock cam

 

[That_1_71_Dodge]

What year of 383? 68-69 had high compression pistons. Heads also changed through the years affecting the compression.

It's going in a 1971 dodge charger 500, sorry forgot to include that

 

[That_1_71_Dodge]

Depends what you are looking for exactly.. but i will say i ran a .484 purple shaft and it was by far my favorite cam i ran.. decently drivable and pulled great. I switched to a .509 in the same car and hated it soo much after that

Not really a race cam but something a step or two up from the stock cam, but I will keep that in mind. Did that go in a 383 Mopar as well?

 

[That_1_71_Dodge]

Mancini is selling their Purple cams in these flavors.

B/RB 361-440, 474/280 Hyd Flat Tappet

B/RB 361-440, 284/484 Hyd Flat Tappet

B/RB 361-440, 292/509 Hyd Flat Tappet

B/RB 361-440, 312/590 Mechanical Tappet

Thank you, I will look into those and find out which one best suits me, I'm looking for something just a little higher than the stock cam.

 

[That_1_71_Dodge]

Back about 1970 I put a 280 degree Crowler (I think) cam in my 64 Sport Fury 383 and it really hurt it off the line. I’m not sure a bit more compression will help much. More like better heads and looser converter or bit better gearing.

Oh yea were definitely upgrading it, I don't wanna keep the motor very stock I want it to run like a muscle car but have some of them luxuries too.

 

[That_1_71_Dodge]

That .590 will reeeeeally wake it up!
after 5500 rpm.

So does he have these from lowest to highest? I have not a clue about cams but if so that'll definitely be nice.

 

[icetech]

Not really a race cam but something a step or two up from the stock cam, but I will keep that in mind. Did that go in a 383 Mopar as well?

yeah for me it would be the .484.. it has a slight lope to it but nothing bad... the .474 if you wanted a little softer but i really loved that 484

 

[icetech]

Here is the 484... i know it's just a video.. but just to get an idea of idle quality..


And you don't want a .590 He was being sarcastic...thing sounds amazing though

 

[RemCharger]

So does he have these from lowest to highest? I have not a clue about cams but if so that'll definitely be nice.

Here is the 484... i know it's just a video.. but just to get an idea of idle quality..


And you don't want a .590 He was being sarcastic...thing sounds amazing though

It wasn't really sarcasm,, just a true statement. But not applicable to this build..
Yes the 284 mopar is a decent choice for basic hot street cam

 

[icetech]

It wasn't really sarcasm,, just a true statement. But not applicable to this build..
Yes the 284 mopar is a decent choice for basic hot street cam

ahah true... a .590 would wake it up but suck in this instance thing sounds amazing though, kinda want one

 

[R413]

Do you have power brakes?
Do you care about fuel mileage?
Can you tune a carburetor?

The 484 isn't very stock and too big for most street cars. Mileage will be Gone!