Supercharger Help Needed
Thread Starter
Burning Brakes
Joined: Sep 2006
Posts: 1,142
Likes: 0
From: Spring Grove Illinois
Supercharger Help Needed
I am installing a Powerdyne S/C this weekend..The engine is carbed..I have all the nesessary stuff to install..Except for boost controll...I have an HEI distrib No Ecu,,,MSD has an Ignition box 6420 (I think) that has a harness for the GM HEI...Do I need an add'l Boost timer box...With a carbed engine I don't need detenation(sp) Problems..Compression is 9:5 to 1 with taller head gasket and will run 6lbs of boost for now...Really need help on this one
Melting Slicks
Joined: Aug 2003
Posts: 3,393
Likes: 392
From: Lakeville MI
With the blower, you'll probably want to run around 20-24 degrees of advance at high rpm under boost.
I'm assuming you have a mechanical/vacuum advance distributor.
If you can limit your mechanical advance to achieve safe timing, you should be ok without an additional boost retard device.
This may be a pia, unless you know how to recurve or limit a mechanical/vacuum advance distributor.
An adjustable boost retard may be easier.
Its good to see more Powerdynes popping up on this board. Good luck with your project.
Any idea how much advance you're currently running?
I'm assuming you have a mechanical/vacuum advance distributor.
If you can limit your mechanical advance to achieve safe timing, you should be ok without an additional boost retard device.
This may be a pia, unless you know how to recurve or limit a mechanical/vacuum advance distributor.
An adjustable boost retard may be easier.
Its good to see more Powerdynes popping up on this board. Good luck with your project.
Any idea how much advance you're currently running?
Thread Starter
Burning Brakes
Joined: Sep 2006
Posts: 1,142
Likes: 0
From: Spring Grove Illinois
I'm @32* now on the 383...Hei w/vaccume advance..Runs strong but need more power
Everything I've seen MSD wise needs the box..Plus the boost timer...I'm a little confused
Everything I've seen MSD wise needs the box..Plus the boost timer...I'm a little confused
