Budget LQ4 with 243 Heads...NOW WITH DYNO RESULTS!
03-10-2012, 10:07 PM
#21
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I'll be swapping to 42lb injectors and getting the Yank restalled to 4k. Having some install issues right now I'm a little challenged with the measurements. I was just as shocked how well the mild cam did on the dyno and track through an LS6 intake.
03-11-2012, 01:06 AM
#22
I ran this cam in my stock cube 346 and it was just a hair too big...I bet it would be perfect for the 6.0
03-11-2012, 03:44 PM
#23
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Seeing some pretty big cams suggested here. At what duration does to PTV clearance become an issue?
And I know this kinda goes against the earlier criteria I set out for a cam, but would an MS3 or MS4 cam work in my application? Would it be a little more tame in a 6.0? How aggressive are the ramps on that cam?
And I know this kinda goes against the earlier criteria I set out for a cam, but would an MS3 or MS4 cam work in my application? Would it be a little more tame in a 6.0? How aggressive are the ramps on that cam?
03-12-2012, 02:36 PM
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Just got off the phone with Dave @ West Coast Cylinder Heads. Had a long discussion about camshafts versus cylinder head setup.
Basically, he said that it's pointless to go much over .560-.570 lift on unported 243 heads. For duration, he was recommending something around 224ish intake and around 230 exhaust with an LSA of 113-114.
This sounds pretty tame. Any opinions on this type of setup? It doesn't seem like it would get me to 400 RWHP, though he did say we could go to 11:1 compression when we cut the heads, assuming a dead-nuts tune.
Basically, he said that it's pointless to go much over .560-.570 lift on unported 243 heads. For duration, he was recommending something around 224ish intake and around 230 exhaust with an LSA of 113-114.
This sounds pretty tame. Any opinions on this type of setup? It doesn't seem like it would get me to 400 RWHP, though he did say we could go to 11:1 compression when we cut the heads, assuming a dead-nuts tune.
03-12-2012, 02:59 PM
#26
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I would go with a bigger cam. I think an EPS 230/238 would be a great choice for that motor. Mill the heads .030 to bump the compression. I just installed a set of 243 heads milled .030 with a valve job and slight port work done by myself on my LS1 with a VRX5 cam which is 236/238 and made 446/406 at the wheels on a conservative dyno through a slipping clutch.
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03-12-2012, 08:21 PM
#28
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i didnt go very big either
i just installed 216/220 .560/.560 cam this evening
im working on an lq9 with 317 heads 10.1 compression
im shooting for pretty good midrange power
and i hope the gm blue valve springs i put on will give me
less maintenance with them for my cam
but.... this engine is going in a truck
i just installed 216/220 .560/.560 cam this evening
im working on an lq9 with 317 heads 10.1 compression
im shooting for pretty good midrange power
and i hope the gm blue valve springs i put on will give me
less maintenance with them for my cam
but.... this engine is going in a truck
03-12-2012, 10:35 PM
#29
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LQ4 AI 226 243 heads milled .030 10.8.1 compression and a AI custom ground cam 226/230 600/600 111+3
http://youtu.be/EkJSJqkI2Io
http://youtu.be/EkJSJqkI2Io
03-13-2012, 05:29 AM
#30
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I hope that's untuned to have stalled out like that on the first start. My car's gonna be a daily driver. I don't want to have trouble starting it on cold days or anything.
Any idea what kind of power you're putting down with that? I'm shooting for an 11:1 compression with my motor. 243 heads milled .030, 228r cam. 112lsa. I'm trying to stay under .600" lift and the 228r is .588.
My motor's in the shop now getting some "finishing touches" on it. They'll be determining my gasket thickness for me since I can't seem to measure pistn dish to save my life.
I'm guessing ~.041 though to get that kinda compression?
For LQ4 users who want to stay naturally aspirated, there's a lot of room for us in adjusting head gaskets to make up for the compression "loss." You run a mildish cam in the mid 220s and bump the compression close to 11, 400whp SHOULD come easy then.
Any idea what kind of power you're putting down with that? I'm shooting for an 11:1 compression with my motor. 243 heads milled .030, 228r cam. 112lsa. I'm trying to stay under .600" lift and the 228r is .588.
My motor's in the shop now getting some "finishing touches" on it. They'll be determining my gasket thickness for me since I can't seem to measure pistn dish to save my life.
I'm guessing ~.041 though to get that kinda compression?
For LQ4 users who want to stay naturally aspirated, there's a lot of room for us in adjusting head gaskets to make up for the compression "loss." You run a mildish cam in the mid 220s and bump the compression close to 11, 400whp SHOULD come easy then.
03-15-2012, 06:06 PM
#32
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Alright, cam issue has been settled.
I got a good deal on a Hot Cam and went with it. I know I'm gonna start seeing posts about how I could have gone bigger, or that there are better cams out there, but I already know that. Thing is, I paid less than half of what a spec cam would cost, and is thread is titled, this is a budget build.
Anyway, I had this cam in a 6-speed '99 Camaro SS back in about 2002. It had lightly ported LS1 heads, LS1 intake, and some Pacesetters, and that car made 360/360 untuned through the mufflers. It's plenty of cam for what I want to do.
Just talked to WCCH again to get the 243s nailed, down, and we're going to mill enough to get us to 11:1, along with a valve job. We're doing yellow springs, and since the lift is only .525, I'm not gonna be worrying about dropping a valve. Fave at West Coast believes that this will be a well-matched combo for unported 243s.
With the added cubes, I would think that I could get in the 390 RWHP range fairly easily, with room to spray the **** out of it in the future.
This is probably not the outcome y'all were expecting, but in the spirit of this being a budget deal, it's probably my best option.
I'm hoping to get the install done in the next 3 weeks or so, and I'll post the dyno results the day I get them!
I got a good deal on a Hot Cam and went with it. I know I'm gonna start seeing posts about how I could have gone bigger, or that there are better cams out there, but I already know that. Thing is, I paid less than half of what a spec cam would cost, and is thread is titled, this is a budget build.
Anyway, I had this cam in a 6-speed '99 Camaro SS back in about 2002. It had lightly ported LS1 heads, LS1 intake, and some Pacesetters, and that car made 360/360 untuned through the mufflers. It's plenty of cam for what I want to do.
Just talked to WCCH again to get the 243s nailed, down, and we're going to mill enough to get us to 11:1, along with a valve job. We're doing yellow springs, and since the lift is only .525, I'm not gonna be worrying about dropping a valve. Fave at West Coast believes that this will be a well-matched combo for unported 243s.
With the added cubes, I would think that I could get in the 390 RWHP range fairly easily, with room to spray the **** out of it in the future.
This is probably not the outcome y'all were expecting, but in the spirit of this being a budget deal, it's probably my best option.
I'm hoping to get the install done in the next 3 weeks or so, and I'll post the dyno results the day I get them!
03-15-2012, 07:02 PM
#33
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I'll stay tuned for the results I'm interested in seeing what this setup puts down. Seems like the perfect budget build IMO, Hot cam, LS6 springs, unported 243s, bolt ons.
03-15-2012, 11:30 PM
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Maybe in a year or two, I'll do the L92 heads/intake setup to see if I can duplicate what Car Craft did a while back!
03-15-2012, 11:49 PM
#37
If it makes you feel better on my first cam swap on my goat I was afraid of "over camming" and went with a 220/224...don't get me wrong , it wad a good increase in power, but i was ready to pull it out and go bigger after a week lol
04-23-2012, 08:09 AM
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Alright, cam issue has been settled.
I got a good deal on a Hot Cam and went with it. I know I'm gonna start seeing posts about how I could have gone bigger, or that there are better cams out there, but I already know that. Thing is, I paid less than half of what a spec cam would cost, and is thread is titled, this is a budget build.
Anyway, I had this cam in a 6-speed '99 Camaro SS back in about 2002. It had lightly ported LS1 heads, LS1 intake, and some Pacesetters, and that car made 360/360 untuned through the mufflers. It's plenty of cam for what I want to do.
Just talked to WCCH again to get the 243s nailed, down, and we're going to mill enough to get us to 11:1, along with a valve job. We're doing yellow springs, and since the lift is only .525, I'm not gonna be worrying about dropping a valve. Fave at West Coast believes that this will be a well-matched combo for unported 243s.
With the added cubes, I would think that I could get in the 390 RWHP range fairly easily, with room to spray the **** out of it in the future.
This is probably not the outcome y'all were expecting, but in the spirit of this being a budget deal, it's probably my best option.
I'm hoping to get the install done in the next 3 weeks or so, and I'll post the dyno results the day I get them!
I got a good deal on a Hot Cam and went with it. I know I'm gonna start seeing posts about how I could have gone bigger, or that there are better cams out there, but I already know that. Thing is, I paid less than half of what a spec cam would cost, and is thread is titled, this is a budget build.
Anyway, I had this cam in a 6-speed '99 Camaro SS back in about 2002. It had lightly ported LS1 heads, LS1 intake, and some Pacesetters, and that car made 360/360 untuned through the mufflers. It's plenty of cam for what I want to do.
Just talked to WCCH again to get the 243s nailed, down, and we're going to mill enough to get us to 11:1, along with a valve job. We're doing yellow springs, and since the lift is only .525, I'm not gonna be worrying about dropping a valve. Fave at West Coast believes that this will be a well-matched combo for unported 243s.
With the added cubes, I would think that I could get in the 390 RWHP range fairly easily, with room to spray the **** out of it in the future.
This is probably not the outcome y'all were expecting, but in the spirit of this being a budget deal, it's probably my best option.
I'm hoping to get the install done in the next 3 weeks or so, and I'll post the dyno results the day I get them!
I was expecting 390ish with this one tbh.
on a stock LQ4 milling .030 on stock 243s should put you at ~ 59CC and get you that 11:1 compression if you run a thin enough gasket.
06-21-2012, 06:04 PM
#40
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Swap is done and the 6.0 is in the car. Here's a quick teaser of what it sounds like:
PHP Code:
http://youtu.be/PxI1kwvD95o?hd=1