E-Cam, Low Vacum, Horrible Brakes = HELP

[OutLawSE]

Guys,

I have a E303 cam in my AODE car. The car had no brake problems before I installed the new motor. Now, when just backing the car up while idling, the brake goes almost completely to the floor before I feel the brakes catching.

I tested it and the vac = 8-10lbs at a 900rpm idle.

When stopping from 50mph, the brakes are better but they are still allot worse then they used to be with the stock 302. I know a cam like the E303 lows vacum, but if it effects the brakes on a SN95 to this extent, I won't have gotten it.

What should the Vac be lbs_wise with the E303 ???
Is there anything I can do to get better brakes ???
Has anyone else with the E303 in a SN95 experienced this problem ??

Thanks...John

 

[FastFord]

Well, I can't testify to what the vacume pressure should be with an e303, but I can say that I found NO degradation in braking after my e303 install. Sorry that I couldn't be of more help.

 

[bjl95mustang]

Sounds like there might vacume leak. You can get a vacume can from jegs for $35. The can will store vacume for the brakes. It's a jegs part # 555-63010.

 

[RIO5.0]

Ya you must have a bad leak somewhere??....my Steeda 19 pulls 17lbs at idle for comparision...

 

[OinkAodeOink]

maybe its just an automatic thing? Since auto cars are loaded at idle in gear.. and stick cars are not.. I know I seen an increase in vacuum when i threw it in nutrual at stop lights.

WHen I had the E303 I had the exact problems, and hated them.. thats why I got rid of the cam. Atleast try out the vacuum canister and see if it doesnt help the brakes.

 

[OutLawSE]

Oink,

You had the same brake problem???

 

[OinkAodeOink]

Yes I did.. I got used to it for the time I had the cam.

 

[Southern94Cobra]

Don't know if this will help your situation , but a friend of mine had that problem in a 302 bronco.
Tried everything, the thing that helped the most was to drill a small hole on the butterfly on his T/B one on top one on bottom. It didnt cure it, but it helped.

Figured if the can doesnt work you could try it.

 

[mo_dingo]

Vacuum canister is probably going to be your best bet. They aren't very expensive either.

But you may have a vacuum leak. You might want to check out your vacuum lines and ntake manifold for leaks.
Scott

 

[OutLawSE]

Checked everything for leaks.

In Park, Vac = 11 lbs.
In Drive, Vac = 8 lbs.

I think I need a vac canister.

 

[v6v8swap]

I can't tell you exact vac numbers, but I know that I've got as good of brakes with the 5.0 with the e303 (and 1.7 ratio rockers) as I had with the 3.8 stock. Good Luck!!
Phil

 

[OutLawSE]

I bled the brakes and they are better. Thanks...

 

[bimmertech]

if the pedal goes to the floor most definetly not a vaccuum issue. low vac will cause a high hard pedal, gotta be a fluid issue

 

[SAY GO]

i installed a new motor and bought a brake booster...im not using it..i will sell it to you if you need it PM me...