What's the biggest cam you've seen on a stock displacement ls1?
12-29-2004, 08:12 PM
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What's the biggest cam you've seen on a stock displacement ls1? Bought my solid roller setup, but after double checking the specs with the manufacturer (Cam Motion) it's actually a lot bigger than the seller told me.
Just wondering what I can expect or if I should just sell it for a smaller cam.
It's a solid roller cam. I'll be using stage 3 heads, comp cams 1.75 roller rockers, long tubes, SS3800 converter, 3.73 gears, 90mm LSX intake and TB, dyno tuning, etc.
I would like to be able to drive this thing all summer though. I have a good size cam now, so I am not afraid of the chop and such. Just don't want to have too much cam to even be usable on the stock displacement.
Here's the specs:
Dur @ .050 240 intake and 249 exhaust
Lift is 658 intake and 649 exhaust (1.75rr)
Lobe seperation 112
Intake centerline 108
Hot lash .010
Just wondering what I can expect or if I should just sell it for a smaller cam.
It's a solid roller cam. I'll be using stage 3 heads, comp cams 1.75 roller rockers, long tubes, SS3800 converter, 3.73 gears, 90mm LSX intake and TB, dyno tuning, etc.
I would like to be able to drive this thing all summer though. I have a good size cam now, so I am not afraid of the chop and such. Just don't want to have too much cam to even be usable on the stock displacement.
Here's the specs:
Dur @ .050 240 intake and 249 exhaust
Lift is 658 intake and 649 exhaust (1.75rr)
Lobe seperation 112
Intake centerline 108
Hot lash .010
12-29-2004, 08:20 PM
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not sure. I picked out the converter when I thought the specs were smaller. I haven't made the purchase yet I told a guy I would buy it a couple days ago but he has yet to be online again since then, so I might have to look more towards the 4000-4200 range
12-29-2004, 09:38 PM
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My husband has 245/250 cam in his M6 car. It was not easy tuning for it, but it is fine now. I can't imagine it in an A4, but with good tuning it can be done. I would really consider going with a larger stall on your TC though, maybe a 4400 with that cam.
12-29-2004, 09:43 PM
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Here you go...
I've been experimenting with a few grinds in a 346. From Cam Motion, I have a 249/255-112LSA/108ICL (.010 hot lash), and a 251/259-114-110ICL (.025 hot lash). The first was a 'street' profile. The 'low-lash' lobes are mild (what you have)-less aggressive than Comp's XE-R hydraulic lobes. It was streetable with the M6. Shift points were 69-7000. The second had much more aggressive lobes. It was a little tougher to handle around town, but not impossible. Shift points were the same. Now for the most recent grind. It's a 252/256-114-110ICL from CompCams, matched to a set of CNC'd 5.3L heads. It's more aggressive than both CM ginds, but no tougher than the second CM driving around town. It made a noticeable midrange increase. All were 'tried out' with a 90mm intake and Tb. The idle of both aggressive profiles is pro dragster and hardly running @ 900rpm. Neither of the three were tuned into the system. I used MAFT to deal with the fuel trims, but that was it. The numbers in my sig now are with the Comp grind, 5.3 heads, with the addition of an I.R intake system I just finished. I have FAR too much intake duration now with the huge intake system. I have an all-bore short block, and a set of C5R's on the way
, so I haven't bothed with dyno tuning.
Streetability is pretty much opinion based. I have this combo on the street with a spool, and 15.5" wide sportsman pro's whenever I can, and I don't have any problems with it (other than cooling). The average Joe probably couldn't get it out of the driveway
To each his own...Considering the lash and mild lobe profile, it'll probably run like a 236* XE-R cam-very streetable.
I've been experimenting with a few grinds in a 346. From Cam Motion, I have a 249/255-112LSA/108ICL (.010 hot lash), and a 251/259-114-110ICL (.025 hot lash). The first was a 'street' profile. The 'low-lash' lobes are mild (what you have)-less aggressive than Comp's XE-R hydraulic lobes. It was streetable with the M6. Shift points were 69-7000. The second had much more aggressive lobes. It was a little tougher to handle around town, but not impossible. Shift points were the same. Now for the most recent grind. It's a 252/256-114-110ICL from CompCams, matched to a set of CNC'd 5.3L heads. It's more aggressive than both CM ginds, but no tougher than the second CM driving around town. It made a noticeable midrange increase. All were 'tried out' with a 90mm intake and Tb. The idle of both aggressive profiles is pro dragster and hardly running @ 900rpm. Neither of the three were tuned into the system. I used MAFT to deal with the fuel trims, but that was it. The numbers in my sig now are with the Comp grind, 5.3 heads, with the addition of an I.R intake system I just finished. I have FAR too much intake duration now with the huge intake system. I have an all-bore short block, and a set of C5R's on the way
, so I haven't bothed with dyno tuning.Streetability is pretty much opinion based. I have this combo on the street with a spool, and 15.5" wide sportsman pro's whenever I can, and I don't have any problems with it (other than cooling). The average Joe probably couldn't get it out of the driveway
To each his own...Considering the lash and mild lobe profile, it'll probably run like a 236* XE-R cam-very streetable. Trending Topics
12-30-2004, 07:34 AM
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Originally Posted by NoseUp
Here you go...
I've been experimenting with a few grinds in a 346. From Cam Motion, I have a 249/255-112LSA/108ICL (.010 hot lash), and a 251/259-114-110ICL (.025 hot lash). The first was a 'street' profile. The 'low-lash' lobes are mild (what you have)-less aggressive than Comp's XE-R hydraulic lobes. It was streetable with the M6. Shift points were 69-7000. The second had much more aggressive lobes. It was a little tougher to handle around town, but not impossible. Shift points were the same. Now for the most recent grind. It's a 252/256-114-110ICL from CompCams, matched to a set of CNC'd 5.3L heads. It's more aggressive than both CM ginds, but no tougher than the second CM driving around town. It made a noticeable midrange increase. All were 'tried out' with a 90mm intake and Tb. The idle of both aggressive profiles is pro dragster and hardly running @ 900rpm. Neither of the three were tuned into the system. I used MAFT to deal with the fuel trims, but that was it. The numbers in my sig now are with the Comp grind, 5.3 heads, with the addition of an I.R intake system I just finished. I have FAR too much intake duration now with the huge intake system. I have an all-bore short block, and a set of C5R's on the way, so I haven't bothed with dyno tuning.
Streetability is pretty much opinion based. I have this combo on the street with a spool, and 15.5" wide sportsman pro's whenever I can, and I don't have any problems with it (other than cooling). The average Joe probably couldn't get it out of the driveway To each his own...Considering the lash and mild lobe profile, it'll probably run like a 236* XE-R cam-very streetable.
I've been experimenting with a few grinds in a 346. From Cam Motion, I have a 249/255-112LSA/108ICL (.010 hot lash), and a 251/259-114-110ICL (.025 hot lash). The first was a 'street' profile. The 'low-lash' lobes are mild (what you have)-less aggressive than Comp's XE-R hydraulic lobes. It was streetable with the M6. Shift points were 69-7000. The second had much more aggressive lobes. It was a little tougher to handle around town, but not impossible. Shift points were the same. Now for the most recent grind. It's a 252/256-114-110ICL from CompCams, matched to a set of CNC'd 5.3L heads. It's more aggressive than both CM ginds, but no tougher than the second CM driving around town. It made a noticeable midrange increase. All were 'tried out' with a 90mm intake and Tb. The idle of both aggressive profiles is pro dragster and hardly running @ 900rpm. Neither of the three were tuned into the system. I used MAFT to deal with the fuel trims, but that was it. The numbers in my sig now are with the Comp grind, 5.3 heads, with the addition of an I.R intake system I just finished. I have FAR too much intake duration now with the huge intake system. I have an all-bore short block, and a set of C5R's on the way
, so I haven't bothed with dyno tuning.Streetability is pretty much opinion based. I have this combo on the street with a spool, and 15.5" wide sportsman pro's whenever I can, and I don't have any problems with it (other than cooling). The average Joe probably couldn't get it out of the driveway
To each his own...Considering the lash and mild lobe profile, it'll probably run like a 236* XE-R cam-very streetable.
12-30-2004, 08:08 AM
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Originally Posted by DAPSUPRSLO
Are you using the maf sensor with these cams?
12-30-2004, 08:27 AM
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Excellent. I am getting ready to put in a 239/246 .649"/.613" 106lsa 106icl cam. This cam has a more aggressive intake lobe then the xe-r and an xe-r exhaust lobe. It is hydraulic to so I won't be loosing any duration through lash. Seeing that you guys got those cams to run with the maf sensor makes me feel alot better.
What kind of heads are on that monster. I take it it isn't a stock shortblock either judging by the fact you went to a solid cam.
What kind of heads are on that monster. I take it it isn't a stock shortblock either judging by the fact you went to a solid cam.
12-30-2004, 09:57 AM
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Originally Posted by hellbents10
You are going to have more trouble with the maf then most becuase of all the overlap with a 106LSA. You will be pullin a lot of air through that maf that won't be used other then going out the exuast pipe at low engine speeds.
I was under the impression that the problems arise with reversion caused at low engine speeds which will make the maf sensor read the same air twice. Never thought about the air escaping out of the exhaust, at low engines speeds anyway.
12-30-2004, 10:30 AM
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Originally Posted by hellbents10
You are going to have more trouble with the maf then most becuase of all the overlap with a 106LSA. You will be pullin a lot of air through that maf that won't be used other then going out the exuast pipe at low engine speeds.
12-30-2004, 12:01 PM
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Originally Posted by Lady Redhawk
Your not kidding about that. My husband's cam has 25 degrees of overlap, and it was a pita to tune, DAPSUPRSLO's will have 30.5 if I am reading that right.
12-30-2004, 05:43 PM
#20
I told peeps my cam in my 408ci was small. I only run a 250/257 lsa 112. The car skoots around town just nicely, but stop and go traffic can get a little irritating with my Spec 5 clutch. My car actually sounds like a H/C package with a mild cam by todays standards with a Z06 exhaust. What's funny is peeps even try me and I have to turn them into victims.