Quote:
Originally Posted by XfireZ51
Karl,
So it looks as if they are using a check valve on the LT1 despite it not having a SC. HMMM
Then they still get vacuum at WOT by using a third port and tapping in upstream of the throttle body.
|
My "guess" is, it would serve the same purpose the LT5 cam cover vent tubes do, which is two-fold, (1) as a filtered air purge of the crankcase for the PCV system under normal operating conditions, and (2) as a vent for high crankcase pressure at WOT.
I don't believe there would be any appreciable/measurable vacuum upstream of the throttle body.
__________________
Jerry Downey
JERRYS LT5 GASKETS & PARTS
http://www.jerrysgaskets.com
1994
ZR-1, Black/Black, Lingenfelter Aerobody, 416cu in, 3.91 gears, coil-over susp, Brembo brakes, etc.
2016 Black-Red, 3LT-Z51 Auto 8-speed.