musclecarsrock68

i just put some 799 heads and a 610 lift cam in my car and got to start it last night for the first time. it seemed to run great off idle and sounds 100 times better now but it wont idle at all. i have herd you have to drill out the hole in your throttle body, if so how big?

03Sssnake

iTrader: (20)

Do not start drilling holes in your throttlebody. You need someone to tune the car and set the idle. In the interim you could adjust the idle/throttle stop screw to open the blade and let a little more air in.

gs462

iTrader: (4)

Absolutely dont touch your TB just have the car tuned you are moving ALOT more air than the computer is calibrated for. It needs to be re calibrated.

conan

iTrader: (5)

Go get your car tuned.

musclecarsrock68

alright thanks for the info!

Rise of the Phoenix

iTrader: (27)

Out of curiosity, what's the cam specs?

musclecarsrock68

236/240 601/608 113+4 lsa

can anyone tell me what the +4 means?

musclecarsrock68

dam, just realized i put throttle body not throttle plate. (or what ever the name for the plate that opens and closes is)

Z28SteveA4

iTrader: (16)

+4 mean you have 4 degrees of overlap ground into the cam

03Sssnake

iTrader: (20)

That is 4 degrees of advance timing ground in, not overlap..That cam has 12 degrees of overlap.

sabersaw30

iTrader: (10)

You could try this post no.6 might get you a little idle till you get it tuned.https://ls1tech.com/forums/pcm-diagn...-idle-ls1.html

musclecarsrock68

thanks!