Quote:
I almost complete my front disc brake conversion...
Must I use combination valve or not?
Mopar Action on line http://www.moparaction.com/tech/archive/disc-main.html
As per Mopar Action on line, said the text below,
Some factory installations, notably C-body and later B-body cars, used a “combination” valve, which also included a front-brake metering valve. Its function was a allow the rear brakes to achieve some minimal line pressure (against the return springs) before the fronts began to apply. This was supposed to reduce the possibility of the fronts locking up first on glare ice. Don’t worry about this, besides, with the rears locked first, the car must spin. In addition, none of these valves are no longer available new, repops are from who-knows-where, and most available junkyard samples all seem to be made of cast iron (instead of brass) so they’re rust city. Again, your best bet is to just leave your stock “tee / switch” assembly unmolested and plumb in an adjustable valve in the rear line, as we’ve done in our swap.
I don't know wich way to go... 
My opinion of Ehrenberg's brake knowledge is this, Larry knows more than Rick.
Many inaccurate statements and plain wrong details. Chrysler's engineers, and ALL other OEM engineers, did not come up with almost identical solutions to the disc/drum brake system idiosyncrasies as part of one giant conspiracy. They came up with these solutions because the problem is the same regardless of who's name is on the vehicle, and the solutions will be very similar.
So when some internet (or magazine) clown says "you don't need it" he is wrong. Hundreds of engineers with more knowledge, more experience and more resources than ANYONE, me included, on this site all agree it's a necessity.
They say there are no such thing as a stupid question.
They say there is always the exception that proves the rule.
Don't be the exception.
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