454 won't idle below 1400
03-29-2004, 10:35 PM
#1
Junior Member
Thread Starter
Join Date: Dec 2003
Posts: 30
Likes: 0
Received 0 Likes
on
0 Posts
454 won't idle below 1400
it is a 454 bored 30 over, about 10:1, two 650 holleys, the cam is crane cams #139741
(http://www.cranecams.com/?show=brows...41&lvl=2&prt=5)
I have adjusted the air/fuel screws and the idle screws and nothing will get this thing to idle below 1400. it will idle at about 1200 if i give it a little gas to keep it going. Is this just how some larger cams idle?
(http://www.cranecams.com/?show=brows...41&lvl=2&prt=5)
I have adjusted the air/fuel screws and the idle screws and nothing will get this thing to idle below 1400. it will idle at about 1200 if i give it a little gas to keep it going. Is this just how some larger cams idle?
03-30-2004, 02:14 AM
#2
Member
Join Date: Mar 2004
Posts: 171
Likes: 0
Received 0 Likes
on
0 Posts
Car: Z28
Engine: LS1
Transmission: 4L60E
not really, that cam will be lopey at idle (around 700 rpm in gear) but it shouldn't die or anything. check your timing. high idle usually means too much advance. is your engine running hot?
03-30-2004, 06:05 PM
#3
Member
Join Date: Jul 2003
Location: Ottawa lk, MI, By Toledo, Oh
Posts: 287
Likes: 0
Received 0 Likes
on
0 Posts
Car: 90 RS
Engine: 8 holes
Transmission: Quickest, quicker, quick...
Axle/Gears: 10 bolt, 3.73
Well, i recently had that problem. First, make sure you have the idle adjustment screws set right. Also, make sure the floats are set rite. Then once that is in the right ballpark, adjust your timing. Have it around 12-14 intial if she has a big cam. Then, finish your carb. Also, check for vacumn leaks..
Thread
Thread Starter
Forum
Replies
Last Post
Ozz1967
Transmissions and Drivetrain
4
08-16-2015 10:23 PM
