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Message: <blockquote data-quote="Vettn71" data-source="post: 1399503" data-attributes="member: 19192">Have a 96 GT, worked over 4.6 with a 0.20 over Cobra aluminum block.  I have a C&L plenum, BBK 75mm throttle body, Competition Cams 268 cams, 10.5:1 compression (9cc dish), PI heads (with some pocket porting) and intake, three-angle valve job, stock exhaust manifolds and an AirRaid CAI.  I know all this isn't necessary, but someone is bound to ask.  I just had this thing tuned and it put down 298 to the rear wheels; not bad. My goal was 300, The tuner, Travis at GearHeads, said he pulled some timing because I had bad gas.  I'm okay with that.  As far as I see it I made my goal. Oh, yeah, this is a 5-speed car with 3:73s.  my question is about throttle bodies.  I keep reading how the BBK is not so good, both in quality and performance, especially idle quality.  I am having some issues getting it to idle down.  Travis recommended dropping the idle speed using the idle adjusting screw, but when i get the idle lower than 1,000 rpms, it tends to die.  The idle also hangs pretty bad.  It will go to 2,000 when I pull up to a light, then 1500, then to its final idle.  I've got it where it doesn't die on me, at least.  I know hanging idle is one of the characteristics of the 4.6, but mine takes a loooooong time.  Would an an accufab throttle body help?TIAJim</blockquote>