btr stage 2 cam pushrods and springs
TECH Fanatic
Joined: Jan 2017
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yup I'm saying just that. More to it than you think. Now the lq4 is a 6.0 correct? It can swallow a bit more duration given it has more displacement. What were the centerlines? Duration at .050 doesn't tell me much at all. That cam in that motor making all that noise and running 12s isn't to brag about imo. It isn't stock compression that's impossible because the bigger cam robs cyl pressure at lower rpms by it's very nature. Dynamic compression ratio is what mostly matters. That cam isn't big enough to cause problems on the street but it sure could have been way better. Not knocking your car man but I'm just stating facts. You don't believe me go call an engine builder or even the cam guys and ask them. I guarantee you they would want more static compression to raise dynamic compression and more stall to get you higher in the PB at launch. Gears are fine. You would gain from better heads. Perhaps ported stockers with a good valve job and blend with a little bigger valve so it can breathe more up top. And a fast 102 with the combo mentioned. Then it would be a good "hot street" car. It would probably be a pig in a busy city but that's a tradeoff you decide if you want to make.
TECH Fanatic
Joined: Jan 2017
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Just to be clear since when people are wrong they tend to mince words around. "Overcammed" does not just mean your car will not idle and run like garbage on the streets. Overcammed is a cam too big to make efficient use of the rest of the combo but can include not being able to run civilly on the street. If you have stock gears (3.23) and run a cam with 23x 23x duration and tight centerlines that makes power at 4krpm and up but you have a 3200 stall, you have overcammed. If you have a cam that wants to run out to 7k rpm but is bottlenecked because of an ls6 intake or stock heads, you have overcammed. Can't cruise in 6th? Overcammed. Not enough vacuum to run the basic power brakes and steering? Overcammed. .620 lift on a head that flows only up to .550? Overcammed.
and what will you gain from this? A tenth of two? You would be amazed how good a mid 22x cam with wide centerlines will run with some good afr heads or other quality aftermarket heads. Low 11s high 10s and still be comfortable and not make a ton of noise.
and what will you gain from this? A tenth of two? You would be amazed how good a mid 22x cam with wide centerlines will run with some good afr heads or other quality aftermarket heads. Low 11s high 10s and still be comfortable and not make a ton of noise.
Just to be clear since when people are wrong they tend to mince words around. "Overcammed" does not just mean your car will not idle and run like garbage on the streets. Overcammed is a cam too big to make efficient use of the rest of the combo but can include not being able to run civilly on the street. If you have stock gears (3.23) and run a cam with 23x 23x duration and tight centerlines that makes power at 4krpm and up but you have a 3200 stall, you have overcammed. If you have a cam that wants to run out to 7k rpm but is bottlenecked because of an ls6 intake or stock heads, you have overcammed. Can't cruise in 6th? Overcammed. Not enough vacuum to run the basic power brakes and steering? Overcammed. .620 lift on a head that flows only up to .550? Overcammed.
and what will you gain from this? A tenth of two? You would be amazed how good a mid 22x cam with wide centerlines will run with some good afr heads or other quality aftermarket heads. Low 11s high 10s and still be comfortable and not make a ton of noise.
and what will you gain from this? A tenth of two? You would be amazed how good a mid 22x cam with wide centerlines will run with some good afr heads or other quality aftermarket heads. Low 11s high 10s and still be comfortable and not make a ton of noise.
TECH Fanatic
Joined: Jan 2017
Posts: 1,758
Likes: 442
TECH Fanatic
Joined: Jan 2017
Posts: 1,758
Likes: 442
well if it was me I would see if they will let you swap the cam to a 224/224 112+0 .600 .600. This will give you an ivc of 44 evo 44 which will peak around 6100 (ls6 style intake peaks around 6400 max due to runner design) and make tons of torque. It has 0° overlap at .050 so it should idle smoothly and make decent power up top. Peak torque should be around 4800ish rpms. Use a decent head like an afr 220 (if you got the cash) or get some ported 243/799s with a good valve job. You will be in the low 11s and be able to drive it as a daily. Best of both worlds. Want to go faster? Nitrous. Doesn't take much and isn't that expensive. With your stall and gear it will drive great and be a beast on the street. You won't need an insane amount of static compression to get the dynamic compression up either. It would be a great 91 pump street car.
