next season i'd like to run up to a 150hp shot max and was just wondering which of the msd boxes are really user friendly and effective in retarding/advancing the timing from the driver's seat...and also not a wiring nightmare?

 

Are you using a stock GM HEI?

 

i'm using a D.U.I non cc street/strip unit.

 

i believe all the MSD units require you to use one of their boxes. i know the mallory 685 box has everything built in..start retard, single stage retard, window switch, and rev limiter. its all digital and costs about 70 bucks less than the msd digital 6 unit which only has the retard and rev limiter and is all manual settings.

 

MSD does make a Plug and Play retard box for GM HEI's And the DUI distributor with in cap coil and internal module. They hide it in the catalog cause they want you to buy the other ones that require and external spark box like the MSD 6.

This HEI retard plugs right in and allows 15 to 20deg of retard. Now I got to go look up the part number...

 

The Part number is 8682
About as simple to hook up as it gets.

 

thats why i love this site...a lot of knowlegable people sharing valuable information, all one has to do is ask and he shall receive.

 

F-Bird88, i went to MSD's website and that box you listed is coming up with a 8680 part#, is it the same box like you listed or just a mistake on the part#?

 

F-Bird, disregard my previous post, I found the box but they really did hide it in the catalog so you would go out and buy a spark box like they want you to.

 

yeah i guess i never looked hard enough, good find!

 

Not to hi-jack the thread

but

let me get this striaght

if i buy the Mallory 685 it comes with

a window switch

rev limiiter

retard moduel

and gives you mulitple sparks per cyl?

 

Product ID: MAL-685 Product Group: Ignition - Controls-Amplifiers
Hyfire VI Digital Multi-Strike Ignition Control, Rev Limiters
Description:
The Hyfire® VI Multi-Strike DIGITAL CD Ignition Control is the next generation of digital technology, incorporated into a state-of-the-art street/strip ignition system. The RISC micro-controller provides ultra-high speed processing to provide maximum energy output, unparalleled efficiency and complete coil saturation, while simple touch pad controls with easy-to-read LED displays allow quick, user-friendly adjustments.
Features and Benefits include:

Next generation digital circuitry with four times faster processing than all other units available
High speed "single instruction per cycle" RISC processor
IGBT coil driver and power MOSFET high frequency conversion technology
State-of-art EMI/RFI suppression software
Automatic Start-Retard
Multi-Stage Rev Limiting
Built-in RPM Window Switch
Adjustable High Speed Retard
Multi-Strike to 3,300 RPM
Boost sensitive proportional ignition timing retard with optional Map Sensor and Harness Connector (both are required for Boost Retard Function)
135mj of energy with up to 520 volts primary output
Spark duration of 22.5° of crankshaft rotation
Only 0.67 amps current draw per 1000 RPM
Up to 12,800 RPM with 14.4 volts of input voltage
Longer and more sustained burn time than competitive multiple-spark systems
For Street or Competition
Smog Legal

http://www.centuryperformance.com/de...UCT_ID=MAL-685