do you think that maybe automatic pickups and runners got the dual diaphram booster to make up for their lack of compresion braking by the engine? Just a thought.ErikB said:
4RnrRick said:Any Dims on those boosters?????
So it's the same diameter, 1" thicker. From my own "eyeballing" measurements, that is exactly the case. So just find a thick one. I also noticed that both ErikB and myself have a different vacuum connection from the stock one. The new one appears to be connected to the body of the booster somehow and is a different color. The stock unit is cast or welded into the booster housing and is black. As you can see in this pic of ErikB's...The T100 booster upgrade is very straight forward. The booster I used was from a '96-98 or so T100 xtracab 4x4 without ABS. It bolts right in place of the old stock booster, but is about 1" thicker (due to the dual-diaphragm design). Be sure to re-check your push-rod distance.
ErikB did you happen to notice if there was any spacers between the booster and firewall?ErikB said:
the diameter on the old one (I think thisis refering to a 83 booster) was about 8 1/2" and 4"thick with 2 1/2" long studs fork is 7 1/4 from the base
the T100 booster is 10" diameter 5" thick and the studs are 1 1/4 " with 6" long fork the fork length appears to adjustable