Yes, mine is the 60303. It's a great mid-range power cam.

No, I try to hold the motor at 2500 and apply throttle at the same time as clutch.

Correct me if im wrong, but it sounds like you’re saying its not too good on the low end. How is it as a normal driver, does it take much revving to move from a stoplight?

I can take off from a dead stop as slow or as fast as I want. I can cruise along at say 25-35 mph at 1500 just fine, but I can't mash the pedal unless it's 1900 or above or it will lag. If it was an auto it wouldn't matter. It's a stump puller from 1900 and up.

Any sort of spirited driving and none of this noticeable as the engine is on its powerband.

Degreed it at 107 (that was straight up) then when I was in there for another reason I decided to advance it 2 degrees just for the hell of it. It lowered the powerband by about 100 rpm.

If i were to get 3.55 or 3.73 that would help alot with the low rpm lugging correct? I know for sure im getting one of those two, just dont know which yet. Anyone have opinions on rear end gears?

Of course, higher rear gear numbers will get you into the powerband much faster. Your overdrive gives you the option to select rear gears that you otherwise wouldn't be happy with.

You may even find yourself skipping shifts--I skip 2nd fairly often if it's flat and I'm just leisurely moving along.

Well the overdrive is only in 5th which i wouldnt plan on going to unless i was cruising at ~60 or above

the 528 solid is a good cam. With a set of 1.5 rollers and a tight lash it will have great throttle response. That said you can call and get custom cams all day long for $220. I'd ditch that Performer... not a good intake. FWIW I did a 440 w/ TRW flat tops, ported and bigger valve 915 heads, 528 w/ 1.5 rollers tight lash), headers, and topped it with a six pack...thing ran killer.

As far as getting rolling from a stop, I think you can do it with either rear. I run the TKO 600 behind a 496 with warm cam (243@.050 intake duration). I can get it rolling OK just above idle with 3.23 rear if I want for street driving. "Driven in anger" I walk it out of the hole at around 2000 RPM with 200 treadwear handling tires and pedal it to prevent smoking the tires.

I am running the .81 OD. if you are running the .7x OD you may want or can get along with higher numerical rear ratio. I think either ratio you are looking at would be fine. It would help to graph speed vs RPM with the two choices to get an idea what might be nicest for your driving plans.

You can run the 528 and tighten the lash some to quiet the motor if it bugs you. It will make the cam a touch wilder, if you go real tight, like .012 hot. Don't forget, that the lash loosens up as the heads warm up. My 440-1 heads gain .006 lash, RPMs may be a bit less.

Assuming he's running aluminum heads...

Pretty impressive over on B Bodies with the 30703 Cam on that dyno

Click on link

https://www.forbbodiesonly.com/moparforum/threads/383-to-438-not-too-shabby.159245/