different ls1 conversion ?

[jonnyc]

i've got a complete ls1 brakes,front,rear.booster,and mc, i want to put on my car.the car has a 250 straight 6 in it.
my question is,will the straight 6 have enough vaccum for the brakes to work right,or will i have to use a manual mc?

[86Cutlass383SR]

As long as you have at least 13 - 14 inches of vacuum you should be good to go. Most stock type engines run around 20 so you should be okay.

[Apogee]

Camshaft specifications usually determine your vacuum levels at idle, not displacement. As stated above, anything over 14" Hg is typically adequate, 17-20" Hg is opt, 12-14" Hg is marginal, and anything less is a better candidate for manual brakes or hydroboost.

Tobin
KORE3