Looking for opinions on A4 Cam selection
Looking for opinions on A4 Cam selection I'm trying to help a friend select a cam for a 2001 SS with an A4. Supporting mods would be K&N, Lid, Headers, catted Y and flowmaster cat-back. He'll also be getting a stall converter to help the 3.23 gears out. He's looking to get low 12's on drag radials, and really wants the car to have a good lope at idle.
Being an A4, I know we'll want max HP at 5800, with 6100 being max shift rpm for reliability. With that in mind, I'm looking at something in the 220-224 range on a narrow lobe sep with some advance to keep power in the range needed (no sense in peaking much above shift point).
Here are my questions:
1) are low 12's attainable with a mild cammed & stalled car with the stock heads?
2) if so, would a 108* Lobe Separation Angle & 106* Intake Lobe Centerline work best to acheive desired idle quality and bump DCR sufficiently?
3) would agressive lobes like LSK's be better for their power production (earlier IVC - higher DCR), or should XE lobes be used for additional seat time (increased overlap) while having similar duration at .050"?
4) is a 3200 stall anywhere close to enough for what should be a 'torque cam', or should 3600 be considered the minimum?
I'm hoping I'm asking the right questions. I think that the right cam might do everything asked.
Thanks in advance!
Being an A4, I know we'll want max HP at 5800, with 6100 being max shift rpm for reliability. With that in mind, I'm looking at something in the 220-224 range on a narrow lobe sep with some advance to keep power in the range needed (no sense in peaking much above shift point).
Here are my questions:
1) are low 12's attainable with a mild cammed & stalled car with the stock heads?
2) if so, would a 108* Lobe Separation Angle & 106* Intake Lobe Centerline work best to acheive desired idle quality and bump DCR sufficiently?
3) would agressive lobes like LSK's be better for their power production (earlier IVC - higher DCR), or should XE lobes be used for additional seat time (increased overlap) while having similar duration at .050"?
4) is a 3200 stall anywhere close to enough for what should be a 'torque cam', or should 3600 be considered the minimum?
I'm hoping I'm asking the right questions. I think that the right cam might do everything asked.
Thanks in advance!
Also, here are the VE's I've been considering:
0.006 0.050 0.200
269 219 145 2125 LSK lobe
273 223 149 2126 LSK lobe
108 108 108
106 106 106
IVO 28.5 3.5 -33.5
IVC 60.5 35.5 -1.5
EVO 66.5 41.5 4.5
EVC 26.5 1.5 -35.5
Overlap 55 5 -69
____________________________________________
273 220 138 3713 lobe
277 224 142 3715 lobe
108 108 108
106 106 106
IVO 30.5 4 -37
IVC 62.5 36 -5
EVO 68.5 42 1
EVC 28.5 2 -39
Overlap 59 6 -76
I know a lot of people might think its crazy
to run such LSA and ICL, but I think from the research I've done, it's key to making power with the stock combustion volume.
Patrick G on "aussie cams" with 108 LSA
MNR-0 Results
J-Rod on the virtues of "truck cams"
0.006 0.050 0.200
269 219 145 2125 LSK lobe
273 223 149 2126 LSK lobe
108 108 108
106 106 106
IVO 28.5 3.5 -33.5
IVC 60.5 35.5 -1.5
EVO 66.5 41.5 4.5
EVC 26.5 1.5 -35.5
Overlap 55 5 -69
____________________________________________
273 220 138 3713 lobe
277 224 142 3715 lobe
108 108 108
106 106 106
IVO 30.5 4 -37
IVC 62.5 36 -5
EVO 68.5 42 1
EVC 28.5 2 -39
Overlap 59 6 -76
I know a lot of people might think its crazy
to run such LSA and ICL, but I think from the research I've done, it's key to making power with the stock combustion volume.Patrick G on "aussie cams" with 108 LSA
MNR-0 Results
J-Rod on the virtues of "truck cams"
i cant answer all your questions, but
1) definately. i have what i consider mild combo (222/222, .568 & 3500 stall) i havent been to a 1/4 track yet, but 7.77 in the 1/8 is a low 12
4) in my opinion, if you are gonna get a stall 3500 is minimum, you will most likely want more after you have had it for a while.
1) definately. i have what i consider mild combo (222/222, .568 & 3500 stall) i havent been to a 1/4 track yet, but 7.77 in the 1/8 is a low 12
4) in my opinion, if you are gonna get a stall 3500 is minimum, you will most likely want more after you have had it for a while.
Originally Posted by thunderstruck
i cant answer all your questions, but
1) definately. i have what i consider mild combo (222/222, .568 & 3500 stall) i havent been to a 1/4 track yet, but 7.77 in the 1/8 is a low 12
4) in my opinion, if you are gonna get a stall 3500 is minimum, you will most likely want more after you have had it for a while.
1) definately. i have what i consider mild combo (222/222, .568 & 3500 stall) i havent been to a 1/4 track yet, but 7.77 in the 1/8 is a low 12
4) in my opinion, if you are gonna get a stall 3500 is minimum, you will most likely want more after you have had it for a while.
As for the stall, his girlfriend drives the car about 1/2 the time, so less stall might keep her in check
PREDATOR-Z - do you think a wider LSA and later IVC will make enough power to justify losing some of the 'lope'? I know that he wants the sound more so than anything, but I don't think it's right to recommend a G5X3 or even one of the Torquer cams just based on sound.
Originally Posted by hammertime
What LSA and ICL are you running with that cam?
As for the stall, his girlfriend drives the car about 1/2 the time, so less stall might keep her in check
PREDATOR-Z - do you think a wider LSA and later IVC will make enough power to justify losing some of the 'lope'? I know that he wants the sound more so than anything, but I don't think it's right to recommend a G5X3 or even one of the Torquer cams just based on sound.
As for the stall, his girlfriend drives the car about 1/2 the time, so less stall might keep her in check
PREDATOR-Z - do you think a wider LSA and later IVC will make enough power to justify losing some of the 'lope'? I know that he wants the sound more so than anything, but I don't think it's right to recommend a G5X3 or even one of the Torquer cams just based on sound.
lsa is 114, cant remember icl
i would think that a 220/224 on a 108+2, especialy with lsk lobes...would make power long after peak...in comparison to other 220/224 cams. basically putting your shiftpoint closer to 6,300-6,400 (higher than your targeted 6,100).
i am going to experiment with this stuff, too. however, i am opting for a 238/246 on a 108+0 lsa utilizing lsk lobes. i am aiming for a VIOLENT 5,500-7k+ powerband. i don't care what the lope sounds like, i just want the mfer to run!
i am going to experiment with this stuff, too. however, i am opting for a 238/246 on a 108+0 lsa utilizing lsk lobes. i am aiming for a VIOLENT 5,500-7k+ powerband. i don't care what the lope sounds like, i just want the mfer to run!
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My mods are in sig. 224 cam, vig 3200, DR's, 3700lb raceweight, consistent 12.0x's.
This is with a need of a retune, my 1-2 shift point is at 6k not 6.5k like the 2-3. It's costing me about 1 tenth and 1mph (according to a tuner at a recent mustang dyno day).
Hope this helps.
This is with a need of a retune, my 1-2 shift point is at 6k not 6.5k like the 2-3. It's costing me about 1 tenth and 1mph (according to a tuner at a recent mustang dyno day).
Hope this helps.
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Originally Posted by s346k
i would think that a 220/224 on a 108+2, especialy with lsk lobes...would make power long after peak...in comparison to other 220/224 cams. basically putting your shiftpoint closer to 6,300-6,400 (higher than your targeted 6,100).
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Joined: Jul 2006
Posts: 1
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From: melbourne AUSTRALIA
From Down Under. Hey Guys. Im N Melbourne Australia. I Have A 2000 Vt Ss Commodore.
Its A Ls1 And Auto.
I Chose A Comp Cam 214/220. Its Not A Big Cam But It Works Well And Has A Little More Lift Than A 222/224.
My Combo Is As Follows.
Ls1, 214/220 Cam, 918 Valve Springs, Pacemaker Headers, Otrcai, And Mafless Tune. Made 252rwkw.
Auto Is Stock With No Shift Kit Just A Dominator 3000 Hi Stall.
My Diff Ratio Is 3.90.
My Best 1/4 Mile Et So Far Is 12.35@112mph.
The Cam I Was Talking About Is A Babe But It Works Well.
Hope This Helps.
Its A Ls1 And Auto.
I Chose A Comp Cam 214/220. Its Not A Big Cam But It Works Well And Has A Little More Lift Than A 222/224.
My Combo Is As Follows.
Ls1, 214/220 Cam, 918 Valve Springs, Pacemaker Headers, Otrcai, And Mafless Tune. Made 252rwkw.
Auto Is Stock With No Shift Kit Just A Dominator 3000 Hi Stall.
My Diff Ratio Is 3.90.
My Best 1/4 Mile Et So Far Is 12.35@112mph.
The Cam I Was Talking About Is A Babe But It Works Well.
Hope This Helps.
Originally Posted by jlashley2001ss
you might want to look at a 224/228 .581/.588 110+2 LSA awesome setup for exactly what ur looking for!