ls6 cam

**k92** · #1 10-01-2005, 01:15 PM

I just sent my ls6 block to the machine shop to get built and am still thinking about what cam to use. Comp Cams makes an exact dupicate of the original GM cam.They also make what they call a nostalgia plus and a magnum muscle.Has anyone ever used these cams,if so were you pleased with the results?

**SS427** · #2 10-01-2005, 03:34 PM

Rob,
I will let you know shortly as I believe this is the cam that my engine builder is using on my LS-6. It will be dynoed within the next few weeks so I will let you know the results.
Rick

Chevy454 · #3 10-01-2005, 05:17 PM

GM still sells the 143 cam...it's actually a blueprint cam made by Crane, but last I checked it was cheaper from the GM dealer. Skip the Comp unit and go with the GM/Crane unit, trust me...all blueprint cams are NOT the same, and this thing has proved itself on the track and the dyno...

COPO PETE · #4 10-02-2005, 06:50 AM

Take the comp cam and throw it in the garbage! Get the GM cam by Crane! Over the last 10 years in Pure Stock, I have watch many folks running a "close" cam or the Comp. I can name at least five people that have changed and picked up 2 tenths and 3 MPH. Sorry if I sound blunt, but ya can't polish a turd!
Peter

JLerum · #5 10-02-2005, 08:11 AM

GM does not list the cam in stock last time I checked. What Pete said, take it to heart! Buy the CRANE 143 cam expecially if you are running exhaust manifolds. Besides, the cam is gentile on valve springs comparitively speaking.

JIM

**WILMASBOYL78** · #6 10-04-2005, 07:48 AM

Sounds like good info on the BB cams. Is the L-88 version too much for a "wilder" street motor? Maybe something with enough compression and rear gears to make it intersting. Just doing a little thinking out loud for a future engine project..

wilma

COPO PETE · #7 10-05-2005, 03:17 PM

The L88 cam is no doubt wilder. Again, buy the one from GM! Just make sure you have a least a true 11:1 compression, and I mean a true 11:1, not I bought some 11:1 trw's and stuck them in. If you don't you will have no vaccumm to run your brakes. Also there is so much over lap on those cams that a motor that had a true 10.8:1 compression, it had 95lbs of cranking pressure when checked!
...............................But with manifolds, you can run high 11's for fun with this cam!
Peter

Chevy454 · #8 10-05-2005, 07:54 PM

From reading a bunch of my SS&DI mags, a lot of the old school guys opted for "143" cams in their L88s...the 143 is a darn good cam, then and now...

**markjohnson** · #9 10-06-2005, 09:03 AM

The GM #143 camshaft easily qualifies as one of mankind's greatest mechanical achievements. My '55 chevy runs mid 11's with it but you'd never know by the mild mannered idle. I've been tempted to change it out for something more wild but after a blast through the gears, I always decide to leave it alone. Anyway, it's a fantastic camshaft for stock stall converters and great for four speeds as well. An L-88 camshaft with a four speed or a stock converter on the street is really not that pleasant to drive due to the lack of torque down low with all that duration.

TDW · #10 10-06-2005, 01:30 PM

Any thoughts on putting the 143 in a stock 427, 390 HP engine?

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