14 in of Vacuum at idle, don't know...
05-01-2002, 04:55 PM
#1
Member
Thread Starter
Join Date: Jan 2001
Location: CT, USA
Posts: 165
Likes: 0
Received 0 Likes
on
0 Posts
14 in of Vacuum at idle, don't know...
See sig for mods, obviously i shouldn't have that low of an idle with that cam. I checked for vacuum leaks. One of my fellow techs mentioned something about a valve hanging open. The problem is only at idle and low RPM. Needless to say this is messing with the FP and MAP sensor, and its really bothering me.
Also, the car used to stall in drive when I came to a stop, but i "fixed" that by bumping up the idle screw temporarily.
Also, the car used to stall in drive when I came to a stop, but i "fixed" that by bumping up the idle screw temporarily.
05-01-2002, 05:08 PM
#2
Supreme Member
Join Date: Jul 1999
Location: Tucson,AZ,USA
Posts: 1,386
Likes: 0
Received 1 Like
on
1 Post
Car: Junk
Engine: Junk with nitrous
Transmission: Junk with gears
Hmm...I never had a vacuum guage when I had a stock cam, but to me that sounds pretty high if thats at like a 700rpm idle. My motor has about 9-10 inches at 1,100 rpms with the 246 duration @ .050 comp cams.
05-02-2002, 10:59 AM
#4
Supreme Member
Join Date: Jan 2001
Location: Rio Rico, AZ 85648
Posts: 1,116
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1989 IROC-1
Engine: L98
Transmission: 700r4
I get about 11 pounds with my 305 with this cam:
Competition Cams XE-262H-10
Part Number 12-238-2
Intake Exhaust
Lift .462 .469
Duration 262 intake 270 Exhaust
at about 750 rpm.
So it sounds to me like you're doing fine.
Competition Cams XE-262H-10
Part Number 12-238-2
Intake Exhaust
Lift .462 .469
Duration 262 intake 270 Exhaust
at about 750 rpm.
So it sounds to me like you're doing fine.
Thread
Thread Starter
Forum
Replies
Last Post
mdtoren
Tech / General Engine
0
08-16-2015 05:45 PM
