Drilling the throttle body nessecary?
#1
Banned
Thread Starter
iTrader: (3)
Join Date: Jan 2009
Location: Central ,CT
Posts: 859
Likes: 0
Received 0 Likes
on
0 Posts
Drilling the throttle body nessecary?
Right now Im running a baby comp 220-224, and ill be upgrading next week to a comp 232/234 .594 lift 112.
Do you guys think ill have to drill a bigger hole in the throttle body or will a good tuner be able to make it idle ok ?
Im just asking ahead of time since Ill have the throtle body off this week to do some porting.
Do you guys think ill have to drill a bigger hole in the throttle body or will a good tuner be able to make it idle ok ?
Im just asking ahead of time since Ill have the throtle body off this week to do some porting.
#3
It depends on how much air your throttle body is letting through right now. The bigger cam will need a touch more air at idle but work with whatever you have for the current cam. I would be trying to get it to idle properly before making the hole bigger but if it needs more air go for it.
cheers
cheers
#5
LSX Mechanic
iTrader: (89)
DO NOT drill your TB hole. There is a process you can use in which you open up the blade using the screw 2-3%, which will aid in better idle quality but drilling the TB hole is a no-no and in most cases makes the car a bigger pain in the *** to get tuned correctly.
#6
TECH Apprentice
Join Date: Aug 2009
Location: NB Canada
Posts: 389
Likes: 0
Received 0 Likes
on
0 Posts
i had a hard time sometime to idle with my 224-224 cam on ls1, and i had the cran cam tuner for that cam, i must have been max out on my idle air valve, when i put my 236-242 cam and 402cid i could not get it to idle until i seen my idle air valve was max out on a scanner, thats when i drilled my trottle blade until my values were within specs. wish i had figured this out when i had the first combination. if i'm not mistaken i was at 170 counts and i drilled little at a time until i was at 40, i almost trippled the size of the hole, don't forget that i am running a 402 now, needed lot more air to idle
#7
Launching!
iTrader: (2)
Join Date: Dec 2002
Location: Mooresville, NC
Posts: 225
Likes: 0
Received 0 Likes
on
0 Posts
Nick