2nd design Purple 284-484 BB cam

[mrhp]

Does anyone have the specs for the 2nd design Purple 284-484 BB cam? The one that gives better idle quality for the street.

 

[PRHeads]

Same as the first design, but on a 114lsa instead of a 108lsa, which results in 12deg less overlap.

 

[moparedtn]

I have a "first gen" one in my 440 now and it idles just fine (800-850RPM).
Just a bit of rumpity rump:

 

[MWbirdLOVER70]

I have a "first gen" one in my 440 now and it idles just fine (800-850RPM).
Just a bit of rumpity rump:

First gen here and love it but the power discs didn’t but remedied that

 

[70bigblockdodge]

Ed yours sounds great.
That original grind needs compression and stroke.
I have a original one in a low compression 400. It leaves a lot to be desired. I'm not sure if 114° LSA would help mine.

 

[lewtot184]

I'm thinking neither for an 8:1 engine. One has too much overlap, the other closes the intake valve too late.

 

[70bigblockdodge]

I'm thinking neither for an 8:1 engine. One has too much overlap, the other closes the intake valve too late.

They both close it too late. It was a bad choice for my engine, but...... It was $free.99. Maybe I should not have been so cheap?
I would not put a 114° lobe speration in anything I expected decent mid range out of.

 

[mrhp]

I've this cam in my .030 over 9:1 440 (built around 25 years ago; I've owned about 10 years now) runs excellent. Decent idle, pulls strong, lots of torque, never seems to drop off. 906 heads, 727, slightly warmer than stock converter, 3:55s. Not sure which version it is but leaning toward the 114lsa as it's very streetable to drive. Pic from earlier this year. Sounds crisper now since I rebuilt the carbs, etc., but here's an older link of it running:

 

[PRHeads]

Back in the late 80’s I ended up building a few low buck re-ring type 400’s.
One got some 516 heads, a SD intake/650DP, and the 484-108 cam.
Modded the carb for 4 corner idle, redid the dist curve……. And sold it to a guy who put it in a 71 charger with headers, 4.10’s and a 10” converter.
Mid-13’s at 103-104 with slicks in decent air @3900 lbs.

Bumpity bump idle, but not horrible.
Of course, my tolerance for that type of thing was pretty high back then.

 

[BSB67]

I have an original one in a low compression 400. It leaves a lot to be desired. I'm not sure if 114° LSA would help mine.

Idle will improve, but everything else will likely be worse.

 

[BSB67]

One thing is for sure, opinions vary greatly on what is good idle quality.

 

[AR67GTX]

You can say that again.

 

[BSB67]

You can say that again.

 

[Cranky]

What was y'all's cams installed at? Years ago I built a 440 with the 108 484 for a guy's 69 Charger with a 4 speed and 3.55 gears. Installed the cam 4 degrees advanced and the guy loved it.