InchUp

iTrader: (2)

That high lift 212/218 is quite the eye catcher for a torque monster. 212/218 .553/.568 on a 115 LSA would make for a 1400-6400 rpm cam in a 6.0L. Me personally, if I was looking for brute torque with sacrifices made in upper RPM's, I'd go with the truck 208/212 cam from CompCams, 208/212, .554/.558 on a 115 LSA. It would be a stock-ish camshaft for the LQ9 but make even better cylinder pressure and mid range torque. Like all camshafts, you can only go so big before the cam starts to take low end torque away to make high end horsepower. The 208/212 I wish was made when I chose my cam. I'd have stuck that in my truck rather than my 206/212 XR259. They're basically the same, it's just that my cam doesn't make the cylinder pressure nor idle quite as smooth as the 208/212.

GMCtrk

iTrader: (27)

I don't want to go TOO small, I still do like to get on it every now and then. I'm really thinking the 212/218 may be the best cam for me.

hirdlej

iTrader: (31)

If I get too irritated with this cam in the upcoming months, I may go over to the 210/218 vinci cam, that was on the flip side of the coin. Then again, I'm having an inner struggle with myself. Driving big blocks for years I'm trying to make a smallblock do what it isn't intended to do. Make flat torque from idle on up. Even though I have what people consider to be a "light weight" truck, it's still 4200 lbs. I would like to see close to 400 RWTQ out of my current combo. If I don't - I will go with a smaller cam and try again. Dyno numbers are coming in next week, I made my appointment today

GMCtrk

iTrader: (27)

I would really like to see you go over to the 210/218 or the 212/218 just to give us a comparison of the two cams.

Plus you have those really short gears AND a manual so low end wouldn't be nearly as big an issue for you as me. So I just dont see the 218/224 being a good choice for me.

sickREDsierra

iTrader: (17)

mine is around 232/236 .585 lift on a 112.. i like it, chops nice at idle, good power everywhere.. and i have a smaller converter (3K)

tires hate it though!

GMCtrk

iTrader: (27)

You also drag race though. I believe HirdleJ (as am I) is just looking for a mean street machine. I just want neck snapping torque from idle on up.

sickREDsierra

iTrader: (17)

keep in mind...as retarded as i am for doing this... this IS my DD, mean street machine. i put 80+ miles a day on it.... i only race it when i do a new mod.. have only seen the track 5-6 times since i bought it 2 years ago.

there are better cams for off idle torque for sure, but this motor made over 300+rwtq at 2500 rpm. thats good enough for me, and really street tires arent gonna hold if its making that sooner, or making more than that... i can only assume.

my tires blow up in smoke if i stall it any, if i roll into it...either way. the 212/218 i had in my 4.8 would be a good cam for what you guys want though... it made great off idle torque and good throttle response.

skeet

iTrader: (18)

lq9 tr224 cam 563 lift lsa112 put down 402 (unlocked converter) this is with the vic jr intake, switching to the tbss intake probably this weekend. then i'll swap to l92 heads with the l92 truck intake and bump it way up

232/238 .6xx”/.6xx” 112LSA +2 advance


looking to get the most hp out of a lq9 NA with some what high compression 11:1

InchUp

iTrader: (2)

The guys pushing for small cams are looking for that same 300+ rwtq at 1500 rpms instead of 2500. At 2500 rpms I'd figure hirdlej's motor is making in the range of 390-400 rwtq.

In comparison, my 5.7L cam is all about torque and mid range power so at 2500 rpms I'd guesstimate the 5.7L puts out about 350lb-ft or so, give or take. hirdlej and I are basically after the same camshaft rpm range when you think about his idea to go to the 210/218 since the the extra displacement tames down the camshaft. We'll both have crazy amounts of low end torque from 800-6000. No matter what cam he puts in, his head work done to the 243's will extend the RPM range up a bit so any 800-6000 cam becomes an 800-6500 cam in his 6.0L. Like Lingenfelter says, "the world's best cam combined with a poor set of heads will produce an engine that's a dog. But bolt on a set of great heads even with a poor cam, and that engine will still make great power."

skyhighsami

iTrader: (8)

I am interested in this as well. I have a LQ4 and I was told it was a 2teen something on the intake and a 22x on the exhaust. I am seriously considering putting a set od Dart heads I have on it which would bump compression a point and change. The cam is in a 1500 HD crew cab. I would like to have a stronger setup and was thinking about maybe throwing a bigger cam in it. I would like the motor to make more power everywhere from idle to redline. Would the head swap and the extra compression be enough for what I am wanting or should I throw a bigger cam in it? The truck is my DD and I would like to keep it a damn good tow machine. Right now it has some shorty Gibson headers so I will change them for full tube Pacesetters. Since I have the cam I think being talked about the most what would be a good converter for my truck and my goals? The truck has a 4L80E if that matters. Thanks and lots of good info in this thread