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.528 purple shaft street-able? #1385322
02/11/13 12:21 AM
02/11/13 12:21 AM
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NY VA USA
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GTXbound Offline OP
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NY VA USA
Hey Guys

Just wanted some advice on the .528 purple shaft

would you guys run it straight up or advance it 4 degrees ?

Projected spec's looking for 500+ HP

comp 10:25 need's to live on pump gas.

Edelbrock aluminum RPM's 82cc

Edelbrock rpm intake gasket matched

Its going in a 4 speed 70 Dart .

Rear is 4:10's currently but i have a pumkin with 3:91's and 28 X 10.5 tire

Thanks

Re: .528 purple shaft street-able? [Re: GTXbound] #1385323
02/11/13 12:32 AM
02/11/13 12:32 AM
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fullmetaljacket Offline
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Very.

Re: .528 purple shaft street-able? [Re: fullmetaljacket] #1385324
02/11/13 01:00 AM
02/11/13 01:00 AM
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Phila Pa
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scatpacktom Offline
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Phila Pa
OH Yeah

Re: .528 purple shaft street-able? [Re: scatpacktom] #1385325
02/11/13 01:04 AM
02/11/13 01:04 AM
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NY VA USA
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GTXbound Offline OP
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The cam degreed straight up or run it 4 degrees advanced?

what did you guys do?

Re: .528 purple shaft street-able? [Re: GTXbound] #1385326
02/11/13 01:26 AM
02/11/13 01:26 AM
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Warren, MI
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Jerry Offline
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Warren, MI
4 advanced. its plenty streetable and i believe even has enough vacuum for power brakes. i run the .557 purple cam and its streetable with a little choppier idle. what engine are you putting it in?


Superior Design Concepts
2574 Elliott Dr
Troy MI 48083
jerry@sdconcepts.com
www.sdconcepts.com
Facebook page: Superior Design Concepts
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Re: .528 purple shaft street-able? [Re: Jerry] #1385327
02/11/13 02:29 AM
02/11/13 02:29 AM
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Puyallup, WA
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StealthWedge67 Offline
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PLENTY streetable. Maybe TOO streetable. If you don't have it yet, I'd look to the .557! I run a similar 451 motor with an Engle mechanical cam thats similar in duration with a little more aggressive profile than the .557 and the same gears.... A downright street bully!, and still plenty streetable.


LemonWedge - Street heavy / Strip ready - 11.07 @ 120
Re: .528 purple shaft street-able? [Re: StealthWedge67] #1385328
02/11/13 07:45 AM
02/11/13 07:45 AM
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Posts: 6,389
nielsville, minn.
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quickd100 Offline
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nielsville, minn.
Advance it 2-4 degrees. It's a great street cam with tremendous low end torque. I had one in my truck in the last 440 that was in it and before I had to put a bar in. On launch my chassis was twisting so hard the drivers door was popping open.Dave

Re: .528 purple shaft street-able? [Re: quickd100] #1385329
02/11/13 10:02 AM
02/11/13 10:02 AM
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
Mr.Yuck Offline
Not enough dumb comments...yet
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Brookeville, Md
yes, it's a good cam. I found that if you tighten the lash a hair it runs even better. I went from the recommended .032/.028 to .028/.024. Seemed to pull harder and longer.


[IMG]http://i66.tinypic.com/pui5j.jpg[/IMG]
Coming soon!!!!
Re: .528 purple shaft street-able? [Re: Mr.Yuck] #1385330
02/11/13 12:53 PM
02/11/13 12:53 PM
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Warren, MI
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Jerry Offline
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i concurr i think the lash specs are too loose. especially if your running aluminum heads as they grow a few thousandths as well.


Superior Design Concepts
2574 Elliott Dr
Troy MI 48083
jerry@sdconcepts.com
www.sdconcepts.com
Facebook page: Superior Design Concepts
www.bcrproducts.com
Re: .528 purple shaft street-able? [Re: GTXbound] #1385331
02/11/13 12:59 PM
02/11/13 12:59 PM
Joined: Jul 2004
Posts: 19,317
State of confusion
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Thumperdart Offline
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Quote:

Hey Guys

Just wanted some advice on the .528 purple shaft

would you guys run it straight up or advance it 4 degrees ?

Projected spec's looking for 500+ HP

comp 10:25 need's to live on pump gas.

Edelbrock aluminum RPM's 82cc

Edelbrock rpm intake gasket matched

Its going in a 4 speed 70 Dart .

Rear is 4:10's currently but i have a pumkin with 3:91's and 28 X 10.5 tire

Thanks


Why not, my .680-.660 solid roller w/275-280 dur. @ .050 has been driven to hell and back for years and is plenty streetable. I`ve been "over camming" for years and I just keep going faster.............enjoy.


72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
Re: .528 purple shaft street-able? [Re: Thumperdart] #1385332
02/11/13 01:55 PM
02/11/13 01:55 PM
Joined: Dec 2008
Posts: 290
Norwalk Ohio
cudasteve68 Offline
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Norwalk Ohio
Quote:

Quote:

Hey Guys

Just wanted some advice on the .528 purple shaft

would you guys run it straight up or advance it 4 degrees ?

Projected spec's looking for 500+ HP

comp 10:25 need's to live on pump gas.

Edelbrock aluminum RPM's 82cc

Edelbrock rpm intake gasket matched

Its going in a 4 speed 70 Dart .

Rear is 4:10's currently but i have a pumkin with 3:91's and 28 X 10.5 tire

Thanks


Why not, my .680-.660 solid roller w/275-280 dur. @ .050 has been driven to hell and back for years and is plenty streetable. I`ve been "over camming" for years and I just keep going faster.............enjoy.




I ran a 528 in my '71 drove it almost everyday during the summer to work. 3:91 & 4:10 gears on a 14 tire. 904 & 3800 stall. Car ran 12.0's That 528 has lumpy at all. Perfect for a "sleeper"

7584247-71DART.jpg (192 downloads)
Re: .528 purple shaft street-able? [Re: cudasteve68] #1385333
02/11/13 02:20 PM
02/11/13 02:20 PM
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dogdays Offline
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AndyF sure liked it, especially through stock exhaust manifolds.
R.

Re: .528 purple shaft street-able? [Re: dogdays] #1385334
02/11/13 02:45 PM
02/11/13 02:45 PM
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Oregon
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AndyF Offline
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Oregon
The .528 works great with HP manifolds. Worked better than any other cam that I tested. I did tons of dyno testing and never found anything that worked better than the .528 cam.

Re: .528 purple shaft street-able? [Re: AndyF] #1385335
02/11/13 05:02 PM
02/11/13 05:02 PM
Joined: Mar 2003
Posts: 9,091
Rogue River, OR
Jeremiah Offline
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Rogue River, OR
Refresh my memory - did you try any roller cams in that engine? I am slowly working on a 511 low deck that will have manifolds so this thread has my attention.

Re: .528 purple shaft street-able? [Re: Jeremiah] #1385336
02/11/13 07:07 PM
02/11/13 07:07 PM
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Posts: 106
NY VA USA
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GTXbound Offline OP
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I guess i'll get this motor ready to go as follows

zero decked block

2355 pitons & 6 pack rods

.040 cometic head gaskets

Edelbrock RPM's milled to 78cc & gasket matched

Compression works out to about 10.6

.528 Purple shaft 4 degrees advance it the ptv checks out.

But i got another question .......

How will advancing the cam 4 degrees affect the compression (now is 10.6) for pump gas on the street ????


Re: .528 purple shaft street-able? [Re: GTXbound] #1385337
02/11/13 07:49 PM
02/11/13 07:49 PM
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Posts: 27,421
Balt. Md
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383man Offline
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Balt. Md
Its a very good cam and works well for what it is. But I had a buddy who was unhappy with it because he said it idled and sounded to smooth ! He wanted somthing much lumpier. But I told him who cares how wicked it sounds it made great power for his combo. Ron

Last edited by 383man; 02/11/13 07:50 PM.
Re: .528 purple shaft street-able? [Re: Jeremiah] #1385338
02/11/13 09:24 PM
02/11/13 09:24 PM
Joined: Jan 2003
Posts: 30,947
Oregon
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AndyF Offline
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Oregon
Quote:

Refresh my memory - did you try any roller cams in that engine? I am slowly working on a 511 low deck that will have manifolds so this thread has my attention.




I did a bunch of dyno testing with other flat tappet cams. Mostly solid flat tappet but also a hyd flat tappet. A couple of years later I did another stroker motor which was slightly bigger and with better heads. I used a hyd roller in the second motor but it didn't really make a lot more power than the .528 flat tappet.

The FAST guys have spent a lot more time and money on this subject than me. I'm sure that Dwayne could find a cam that would make more power than the .528 these days and it would probably be a roller cam.

Back when I did my testing I worked with a couple of different cam mfgs and they sent me their best designs. So it wasn't like I was just picking cams out of the catalog and testing them. I ran exactly what the engineers told me to run and nothing worked better than the .528 cam.

Re: .528 purple shaft street-able? [Re: GTXbound] #1385339
02/11/13 09:30 PM
02/11/13 09:30 PM
Joined: Jan 2003
Posts: 6,531
Jacksonville, FL
Chris2581 Offline
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Jacksonville, FL
It's a very good cam.I really wish I hadn't sold the one I had years ago.Anyway,we ran it in a very mild 440,9.0 compression,452 heads,and the usual bolt ons.Didn't even degree it in and it ran 11.60's all day in the 71 Demon I have now.


Nautilus Racing-
We use Superformance gaskets and Turbo Action converters/products.
Re: .528 purple shaft street-able? [Re: AndyF] #1385340
02/11/13 11:02 PM
02/11/13 11:02 PM
Joined: Mar 2003
Posts: 9,091
Rogue River, OR
Jeremiah Offline
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Jeremiah  Offline
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Rogue River, OR
Quote:

Quote:

Refresh my memory - did you try any roller cams in that engine? I am slowly working on a 511 low deck that will have manifolds so this thread has my attention.




I did a bunch of dyno testing with other flat tappet cams. Mostly solid flat tappet but also a hyd flat tappet. A couple of years later I did another stroker motor which was slightly bigger and with better heads. I used a hyd roller in the second motor but it didn't really make a lot more power than the .528 flat tappet.

The FAST guys have spent a lot more time and money on this subject than me. I'm sure that Dwayne could find a cam that would make more power than the .528 these days and it would probably be a roller cam.

Back when I did my testing I worked with a couple of different cam mfgs and they sent me their best designs. So it wasn't like I was just picking cams out of the catalog and testing them. I ran exactly what the engineers told me to run and nothing worked better than the .528 cam.




Very good info. Thank you Andy. I am looking for a low maintenance combination that will idle like a stocker with the A/C on. It sounds like the .528 could be a very good place to save a little coin too. Adding a hydraulic roller adds a significant amount to the budget once you price out lifters, a roller cam that can drive a mechanical fuel pump, etc.

Re: .528 purple shaft street-able? [Re: Jeremiah] #1385341
02/11/13 11:31 PM
02/11/13 11:31 PM
Joined: Jan 2003
Posts: 9,670
Lima, Peru
domingo Offline
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Lima, Peru
Andy,

Did you try thr .557 too thru the manifolds? How did it compare to the ,528???

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