Anyone running the MS4 at 10:1
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From: Inside Your Girlfriend
Anyone running the MS4 at 10:1 I have the LQ4 with the LSA (LS9) heads and was told that I would be in the ballpark of 10:1 and that with this cam, the engine would run like a dog till around 4K.
I just wanted to see if anyone out there was running the MS4 with a sub 11:1 compression. I don't want to mill these heads because sooner or later I will be going turbo and that is the reason I got them.
Thanks guys!
DM
I just wanted to see if anyone out there was running the MS4 with a sub 11:1 compression. I don't want to mill these heads because sooner or later I will be going turbo and that is the reason I got them.
Thanks guys!
DM
Pretty sure we spoke on the phone earleir. Aside from the terrible compression and being lazy until high RPM's, it physically will not clear without flycutting due to those big 2.165" valves 
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From: Inside Your Girlfriend
Do'h... I thought you had said the valves were around 2.3+ lol...
DM
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From: Inside Your Girlfriend
Yeah mild for now was the idea, just want to have a little fun with it till then, plus I need it up and running for school because I need to commute back and forth to different campuses. I just didn't want it to be such a dog though
DM
DM
That seems like a ridiculous camshaft choice. Go with something that works for N/A and turbo. I have a Speed Inc TU1 myself (225/225 .581 113+1), and I think it would be a good choice for you too.
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From: Inside Your Girlfriend
DM
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The L92's still will not clear....same sized valves. You're stuck either flycutting the pistons to run that cam with the square port heads, changing to a much smaller camshaft and running those square port heads, or running that cam with a cathedral port head.
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From: Inside Your Girlfriend
DM
^^Not to mention when you mill them so much to get your compression up there, you kill so much head flow and integrity/strength!
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From: Inside Your Girlfriend
I am doing some searching and from what I read there is no need for flycutting with stock heads. I still have my 317's, will these heads work? I guess I would have to get an intake since my LS3 will not fit, lol.
DM
DM
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From: Inside Your Girlfriend
I just talked to Matt about replacing the heads and with the LQ4 pistons, he said the 5.3 heads would yield a better cr for the cam.
I just need the car to get me to school right now, but also have a little fun with it too.
DM
That cam is REALLY close to the cam that I am running in my LS2. Of course I still have the stock 243's which are cathedral ports, but it is only 10.8:1 if I recall correctly. I am making 400ft-lbs @ 3000rpm, and 350ft-lbs @ 2500. I have over 400 all the way to 6000rpm. I have NO problmes blowing the tires off any time I want to.
You did not mention if you were a M6 or stalled A4 (and what stall). That will make a difference. IF you are an A4 and not running a stall, I would think about a different cam.
Get a cheap set of used 243's and a used LS6 intake for now, and you should be OK with that cam.
You did not mention if you were a M6 or stalled A4 (and what stall). That will make a difference. IF you are an A4 and not running a stall, I would think about a different cam.
Get a cheap set of used 243's and a used LS6 intake for now, and you should be OK with that cam.
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From: Inside Your Girlfriend
That cam is REALLY close to the cam that I am running in my LS2. Of course I still have the stock 243's which are cathedral ports, but it is only 10.8:1 if I recall correctly. I am making 400ft-lbs @ 3000rpm, and 350ft-lbs @ 2500. I have over 400 all the way to 6000rpm. I have NO problmes blowing the tires off any time I want to.
You did not mention if you were a M6 or stalled A4 (and what stall). That will make a difference. IF you are an A4 and not running a stall, I would think about a different cam.
Get a cheap set of used 243's and a used LS6 intake for now, and you should be OK with that cam.
You did not mention if you were a M6 or stalled A4 (and what stall). That will make a difference. IF you are an A4 and not running a stall, I would think about a different cam.
Get a cheap set of used 243's and a used LS6 intake for now, and you should be OK with that cam.
Thanks for the reply!
DM
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From: Inside Your Girlfriend
Well I am going with a different type of cam since I was told that the MS4 and it profile is not conducive to a proper match for my WCCH L92 heads. Not sure what I will be getting, but more than likely a Pat G spec cam 
Thanks for the continued interest and sorry to disappoint.
DM
Thanks for the continued interest and sorry to disappoint.
DM
