Quote:
Originally Posted by stan65
Mark,
First of all Love your cars! Hope to see a DETAILED build on this car!
I am an the midst of installing an LT4 in a 71 Firebird. I see you went vacuum brake booster for the brakes. The instructions that came with the LT4 said use a vacuum pump as using a vacuum brake booster will have issues under boost?
What did you do? Pump or no Pump? If you used a pump which one did you use?
Thanks,
Stan
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The instructions are wrong. You don’t need a vacuum pump. The vacuum pump is for cold start on the stock car. So don’t park you car on a hill and deplete your booster and take off quickly on a 0 degree day and you will be fine....
It is Engineeringly correct yes. Do you have to have it with a stock LT4 with out cats. No.
Mark
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