need more rear brake drum brakes

ok, i race street stocks, have a metric chassis, my track gave us the option to run the tall spindles and big brakes on the front so i did, only problem i have now is i cant get enough rear brake in the car, i run no stock proportioning valve, and have a bias adjuster, but its maxed out, any tips for geting more rear brake, does anyone know of any racing drum brake shoes, thank you so much for any help  

Are you sure your brake bias is working properly? All a brake bias is a valve to open or close a circut. Check that first....

If you are using a bigger wheel cylinder it requires more brake fluid.

Bendix brakes, wilwood, baer. All those companies should help you out.

Bob AKA pepsi1  

Yes the bias is working properly. With the stock front brakes it was mabye half way but now is maxed. And as for the wheel cylinder its still stock metric stuff for rear brakes  

i am taking that your front brakes are locking up very early..


gm and ford varied brake bias by changing wheel cylinder sizing..

can you narrow down the application the rear end is out of...

you might want to get with the parts manager at your local parts store with some cash to buy the parts..   parts stores don't like to sell incorrect application brake parts...

find some various larger diameters of wheel cylinder from various models.

i have seen wheel cylinder range from 5/8" to 1 1/8"  

some wagons also have 11 inch rear brakes..  again fine tuning with wheel cylinder sizes..  if it does not work right out of the box..

i will get over to my other computer and possibly post some part numbers...


i took a LOOK at one of my catalogs.. i am taking that these are SNAP IN wheel cylinders with a latching ring that grabs the sides of the back of the wheel cylinder..

i looked up one metric chassis...

87 elcamino...  it uses 3/4" rear wheel cylinder...
bendix number E139-67-009   AZ # 33891...

i also looked thru my wheel cylinder images.. the only other snap in type wheel cylinder was from an 87 S10 blazer 2wd... with a bendix wheel cylinder number E139-71-021  AZ# 33892 but this is only for the 2 wheel drive versions with MANUAL brakes...  power brake versions get the same 3/4" wheel cylinder as the elcamino

the 7/8" versions at AZ are probably brakeware brand..

i did not see any other sizes in snap in type for the metric rear ends that have the steel bracket sticking up behind the backing plate..   perhaps this will help...

 33891   3/4"

 33892  7/8"

both use 3/8-24 thread inverted flair fittings..