The 1947 - Present Chevrolet & GMC Truck Message Board Network

The 1947 - Present Chevrolet & GMC Truck Message Board Network (https://67-72chevytrucks.com/vboard/index.php)

- LSx Swaps (https://67-72chevytrucks.com/vboard/forumdisplay.php?f=206)

- - Brake Boosters (https://67-72chevytrucks.com/vboard/showthread.php?t=564772)

Yeah I'm full of questions tonight...

So at what point do you need to stop using a vac booster and move to either a hydro-boost or electric booster? Do LS engines make more vac in a different way then Gen I engines do? My Gen I 327 only makes 9" at idle in park.

Re: Brake Boosters

Quote:

Originally Posted by BigDan3131 (Post 5870885)

As long as you don't put a super big cam in them, LS engines make plenty of vacuum. A vacuum booster will never make the kind of assist you get with a hydroboost, but usually it's enough.