Street/strip cam
Launching!
Joined: Jul 2004
Posts: 205
Likes: 3
From: Valencia Ca
Wont dyno as high but who cares cant race dynos. IMO most overcam their motors *guilty of doing it myself*
keep in mind your best info will be from sponsors if you give them your specific goals. msg board posters vary but i've seen plenty that stick a race cam in and call it a daily driver. ask where the cams peak horse power is and decide if you want to rev that high to use it. my mellow ls6 cam peaks at 5750 rpm and i only rev to 6k so life is good for me. that doesnt mean the cam cant run higher. im not willing to rev to 6500 are you?
if a cam has too much lift you may have to cut the pistons for more clearance. decide what your goals are then call a few sponsors but checkout 228 or a comp cam 228/230 with 585 lift (i think) keep in mind you usually have to rev very high to reach max power with these bigger cams. better springs are a must.
On a 346 i would not go bigger then a 228 on the intake duration if the car is street driven much. A good street cam would be a 224/228, 226/230, 228r.... Mainly Track duty Street Sweeper, MS3, Polluter....etc
Street/Strip I would say something around 230.
On a side note, I personally would go with a really good set of heads and stay mild with the cam. Everything you see around here these days are Donkey Dick cams with stock/mediocre heads.
John Lingenfelter said it best- A really good set of heads combined with a small cam will out perform a Big cam with poor heads.
Last edited by kinglt-1; Jul 25, 2014 at 10:47 AM.
Good points made. Keep overlap below 8 degrees @ .050" and the manifold dictates where the cam will peak, not the cam itself in these cars. So you're looking at a 4800 RPM peak torque and 6300 RPM peak HP no matter what with an LS6/FAST intake. Using valve events that fight the harmonics is what hurts performance. Keep your IVC @ .050" at 45 degrees or less to maximize the powerband and increase torque production with an otherwise stock compression ratio. I wouldn't use anything over 48 degrees - it beings to fight the harmonics of the manifold and can extend the RPM range slightly with a secondary pulse of around 5500 RPM peak torque and 66-6700 peak HP.
A good cam that is around 8 degrees of overlap and comes in at 43 degrees IVC is a 230/234 112+4 camshaft. Using XE-R or lobes with similar intensity, you can have a good performing car that isn't weak on the midrange. Another option that has an IVC of 40 degrees (which would generate good torque in the stock LS1) is a 226/234 111+4. Same overlap as the bigger cam but will make more torque at the expense of a little power uptop past peak. The added exhaust duration helps it hold on but would still be down a few ponies vs the bigger cam.
I recommend everyone find them a valve events calculator so they can see and adjust the events to get the combination down and learn a thing or two about camshaft voodoo.
A good cam that is around 8 degrees of overlap and comes in at 43 degrees IVC is a 230/234 112+4 camshaft. Using XE-R or lobes with similar intensity, you can have a good performing car that isn't weak on the midrange. Another option that has an IVC of 40 degrees (which would generate good torque in the stock LS1) is a 226/234 111+4. Same overlap as the bigger cam but will make more torque at the expense of a little power uptop past peak. The added exhaust duration helps it hold on but would still be down a few ponies vs the bigger cam.
I recommend everyone find them a valve events calculator so they can see and adjust the events to get the combination down and learn a thing or two about camshaft voodoo.
Launching!
Joined: Jul 2004
Posts: 205
Likes: 3
From: Valencia Ca
Well said!! Choosing a cam by .050 numbers and an LSA is putting on blinders and trying to walk they dont even tell the real story. x2on tuning mucho time into it is everything. It wont be done to perfection in a few hrs.
Everything you see around here these days are Donkey Dick cams]
They think they are anyway.23x@050 is a baby cam
