help me match a cam to my stall....
11-26-2008, 09:27 AM
#41
Keeping the LSA an ICL the same, comparing a 218/220 and 220/220
(rough calculations)
220/220 -8* overlap 7.50 DCR
218/220 -9* overlap 7.56 DCR
From my limited understanding the overlap will determine how quickly the TQ comes in and out (broad or Peaky)... The closer the overlap comes to 0*, is when you run into idling problems, vacuum brake problems, problems tuning.... DCR will have an affect across the powerband, but the higher the DCR the higher octane and higher risk of denotation, but the higher the DCR the more power on a NA setup....
Also IMO you need to look at duration, cam lobe profile, LSA and ICL to propperly pick a cam, not just "220" or "112"....
(rough calculations)
220/220 -8* overlap 7.50 DCR
218/220 -9* overlap 7.56 DCR
From my limited understanding the overlap will determine how quickly the TQ comes in and out (broad or Peaky)... The closer the overlap comes to 0*, is when you run into idling problems, vacuum brake problems, problems tuning.... DCR will have an affect across the powerband, but the higher the DCR the higher octane and higher risk of denotation, but the higher the DCR the more power on a NA setup....
Also IMO you need to look at duration, cam lobe profile, LSA and ICL to propperly pick a cam, not just "220" or "112"....
11-26-2008, 04:21 PM
#44
ok, so gonna re stall to 3000, and try and go with a 212/218, but with what lift? comp's website has a really low lift, part number XR265HR. or texas speed has a custom grind that lets me choose a 212/.558 and 218/.563 on a 114+2. what would be better. looking for a smooth idle. my exhaust is quiet, and I like the stealthyness of my truck.
11-26-2008, 04:23 PM
#45
ok, so gonna re stall to 3000, and try and go with a 212/218, but with what lift? comp's website has a really low lift, part number XR265HR. or texas speed has a custom grind that lets me choose a 212/.558 and 218/.563 on a 114+2. what would be better. looking for a smooth idle. my exhaust is quiet, and I like the stealthyness of my truck.
11-26-2008, 04:28 PM
#46
ok, so gonna re stall to 3000, and try and go with a 212/218, but with what lift? comp's website has a really low lift, part number XR265HR. or texas speed has a custom grind that lets me choose a 212/.558 and 218/.563 on a 114+2. what would be better. looking for a smooth idle. my exhaust is quiet, and I like the stealthyness of my truck.
11-26-2008, 04:48 PM
#49
yeah I know, I just do not like the feel of this 3600!! 3000 is more my flavor right now, hell I still have to talk the old lady into the cam first. I may do something different by that time. I am going to do an lsx project truck in a year or so hopefully, and sink all my money in it. I just don't want to break this truck seeing that I have only had it for 18 months. i would rather build a street and strip truck and beat on it and if it breaks, no big deal just let it sit till I can get it fixed.
I just wanted to hear opinions, just trying to talk myself into keeping the 3600.
I just wanted to hear opinions, just trying to talk myself into keeping the 3600.