Need some decision help.

This Lunati

Advertised @ .050 Lift Lobe cntrs
282 290 231 239 .535 .550 110°

Or this Comp?
290 307 230 244 .510 .540 112°

Replacing this Schneider that was a reground cast OEM cam and went flat
288 296 236 246 .555 .555 112°

As far as I can tell, they're close enough. Is there a brand preference? Any "hands on" with the Lunati?

I know this is a wide open question. All I'm interested in is the brand and why. Customer service, support, longevity and so on. The Comp is a 07-306-8. The Lunati is a 60122.

Just in case, the short block is stock, heads are opened up, valves are 2.02 and 1.6's, intake is also opened up. No idea what the heads flow.

A 95 Z28 mess

 

Need more info but likely neither one.

What are you gears, stall or is it a manual, compression, RPM range you want to run. Street car, drag car, weight, elevation?

There's a lot more that goes into it than just picking a cam off the shelf. What made you narrow it down to these two?

 

I would call all of them inappropriate for a stock shortblock with decent heads, but if limiting yourself to those the Lunati would be my pick.

 

personally id like to see the lunati...im sick of cc306's.

Be different!

 

Car is a 95 Z28, has long tube headers, TH400 trans (just added a Hipster brake,) S-60 W/4.30's. My guess is it weighs about 3,500 pounds with me in it.

Ran 12.66 with lots of problems and no power adders. I'm trying to get it all sorted out at once, but it's a challenge. When I pulled the engine I found enough wrong to make me wonder how it made it down the strip. The rear four cylinders had wet carbon in the exhaust ports about 1/8" thick. #5 plug was gaped at about .005". #1 cylinder had both lobes about gone. And on and on... Even the Manley Pro Flo exhaust valves are burnt out of round. A real cluster! And I think the Opti's cap is bad. I'm going to invent a test to check it.

Had some minor surgery last week and am trying to get my Ducks in a row so I can get it back together when I'm able. Want to get the cam on the way so I can concentrate on other things. I'll need a lot more help.

Al

 

ahhh your car the one with the wiped cam lobe! Thats still one of the most awesome things ive seen!

Good luck with the build, im probably almost up to 2 grand on a cam only car , but atleast i can say it was done with the right parts...and the right parts arnt freaking cheap. i also started from stock so bolt ons are in there as well.

 

I can do a custom cam for you, see the link in my sig.

 

the lunati has more aggressive lobes.. so if i was choosing between the two I would probably go Lunati but I would also look at the VE of both before I chose.

 

And how do I do that?

Al

 

You need to learn a lot more about cams and engines in general before it would make any sense.

He's talking about looking at the valve events. People have to stop thinking in terms of numbers. When we limit ourselves to just looking at the numbers, it's easy to get a bigger is better or this is better than that mentality.

What matters is the valve events. The cam controls the valve events, and when you learn how the valve events effect the way the engine performs, then you can begin to choose a cam that will fit your needs. You also have to do some experimentation. An oz of real world experience is worth a lb of book knowledge.

Otherwise just stick to letting the pros do it.

 

I have the CC306 with a set of Darts, there are better choices. The CC306 isn't a bad cam, but there are better options now with some of the custom stuff that will make the same power if not better.

 

why not a custom from LE/AI??

 

I'll try to explain this again. I bought the car as parts from a guy that already sold off the rear axle, torque arm and so on. It's the proverbial "Pig in a Poke." Have no idea who ported the heads, did the intake or have any idea what else good or bad has been done. So far I know what the cam was, and that the 1.6 exhaust valves are too big for the seats. Also know the block, crank, rods and pistons seem to be in good shape.

So where to start? I'm going to stuff an "off the shelf" cam in it and see what happens. Later, if and when I learn to deal with it I might know enough to figure out a decent package. Since the cam went flat and I had to tear it apart to clean the metal out of it, right now I just want it to run again. New rings and bearings, cam and few new lifters, valve springs, crank sprocket and timing chain, some Heli-Coils and it should be ready for more experimenting.

Been drag racing for almost 50 years. Lots of small blocks and big blocks but this LT1 set up is a complete new experience for me. Yes, I have a 2002 LS1 and no I have no clue about it either. I'm very comfortable with the old school stuff, twist the distributor and change jets, I'm not bad with stock EFI cars. My 86 Mustang has an Electromotive set up and I can even deal with that. Trying to go from nothing to knowing about LT1 PCM's, Optispark's and deal with this engine set up is hard for a 65 year old guy. But, I'm persistent and might just get there.

Al 95 Z28 mess, but it ran 12.66 @ 107.16 a few weeks ago. 1/8 mile was 8.059 @ 85.06 w/ 1.766 60', 5.192 330'
Week before it went 12.772 @ 106.45 busting up all the way down.

2002 Z28 M6 < All stock
1973 Z28, 489" Tall Deck BBC, Ron's Toilet, Big Brodie's, MSD Crank Trigger, Ultrabell Glide, Dana 60 W/4.56's, 9.02 @ 156 so far.

Our strip just went from NHRA to IHRA is that good or bad?

 

NHRA to IHRA? Good if you like relaxed safety rules.

 

The LT1 is VERY much like the old gen 1 smallblocks, just likes a good bit more compression and the short intake shifts the rpm range up a good bit. With very good heads a lot of us are talking cams under 230degrees to 6900-7000, they are past peak but still making good steam.

 

If I were you I'd give Comp Cams a call. 800-999-0853
Comp has the largest engineering staff of any cam company, I'd have them spec out a cam specifically for your application. Custom ground cams don't cost anymore money at Comp than an off the shelf cam. Bob

 

Yes Comp has good engineers, BUT they are not who you talk to when you call.

 

True, but when a company has a large engineering department, the knowledge normally trickles down to the people manning the phones. Bob

 

You must have a better contact there than the 800 number because even the kids here recognize the 800 number gets you wildly varying and consistently mediocre advise.

 

I agree, they have spec'ed some weird **** for me a few times. Just inquiring about a solid roller they wanted to hook me up with 26X/26X on a 112, knowing I had to shift my 7000.

Out of the two cams posted I'd run the Lunati for sure.

-Dustin-