VLS1

I'd be wanting to know duration @ 0.006" before considering any cam purchase.

rigidone

Great thread!! I have a brand new 5.3 crate that will be going in my 65 nova. Plans are to stroke to 383 cu, 12.5:1 comp, E85, victor jr, 850 4150, custom fender exit header 2" primary, NOS, pow glide. Would like to creep up on 300+ n20. what cam choices should I be looking at?
Thanks

speedtigger

iTrader: (16)

I would get a custom cam made just for your setup. Fortunately, companies like Cam Motion, Smallwood Racing Development & Engine Power Systems do not charge extra for a custom grind made just for your combination.

Is this something that your solely focused on performance on the nitrous, or do you have goals on motor too?

rigidone

mostly want it to perform on nitrous

speedtigger

iTrader: (16)

Are you going to use the heads as they are stock?

newschool72

iTrader: (12)

Great thread Tigg! Best, most complete carbed LS cam discussion Ive ever encountered. I can see I will be sitting in front of the computer a lot more again, just re-reading this info, over and over and over..................................LOL

Lq4ssmontecarlo

What cam do you recommend for me that will not require fly cutting i have a 87 monte carlo ss with a lq4 i have a victor jr intake and currently running a 750 vac sec wich i am willing to change out for something else if needed. I also have 1 3/4" long tibe headers. Right now the motor has the 317 heads but i do hav acces to a set of 243 heads to help with compression. I also have a th400 with a 3000 stall converter and 3.73 gears. Not a big time drag racer but im pretty sure i will end up take n it to see what it does but mostly just have fun on the street also looking for the lumpy sound of course. Anything you can recommend for more hp

speedtigger

iTrader: (16)

This one for sure:
http://store.cammotion.com/hot-stree...reted-camshaft

I ran 11.27 @ 121 MPH in an LQ9 with a 3000 stall and 3.90 gears pushing a #3700 car with a cam very similar to this one. This camshaft has a great powerband, the idle you want and it drives great on the street.

Lq4ssmontecarlo

How hard are these to install never done one on a ls engine

speedtigger

iTrader: (16)

What type of engine have you done a cam install in?

Lq4ssmontecarlo

i have a 03 lq4. Ive done cam on old school sbc

speedtigger

iTrader: (16)

A lot of things about LS engines are easier. For example, the gaskets are all reusable and seal much better. No distributor to deal with. They are just easier to work on in general really. The only downside is that you have to remove the heads to replace the lifters. But, if your lifters are in good shape, you can reuse them with a new camshaft. There is even a method replacing the camshaft without removing the heads and lifters. So, over all, if you can work on a small block Chevy, you will probably love the LS.

flipp

I have a cam question. I have a lq4 with stock bottom and 799 heads, single plane intake, 770 cfm carb, 1 3/4 headers. Going into a 73 camaro street car. I was spec'd two different cams from two companies. the first is 228/232 .612/.595 110+4 and the second is a 222/230 .604/.604 112. My question is that seems to be a bit different between the two. What do you thing?

speedtigger

iTrader: (16)

For the first camshaft, you have listed the lobe separation angle and advance, for the 2nd camshaft, you did not include the advance or the lift. If you add that information, we can discuss the differences.

flipp

On the second cam all he told me was 222/230 .604/.604 lift 112 no advance.

speedtigger

iTrader: (16)

So, we will compare these two cams:
228/232 .612/.595 110+4
222/230 .604/.604 lift 112+0

The 2nd camshaft is interesting because you note that it has "0" advance ground in. A more typical advance for a grind of that nature in a cathedral port LS1 might have 2 degrees of advance ground in. But, lets look at what you have:



If you notice in the image above, I have highlighted the intake valve open valve events @.050" in green and the total overlap @.050" in red. These two valve events are the most significant in comparing these two camshafts.

The Intake valve open event will influence both power production and engine manners and also contributes to the total overlap. The earlier intake valve opening of the 228/232 camshaft will mean that this camshaft will make a notable amount more power than the 222/230 camshaft. However, he 222/230 will have a much smoother idle, notably better manners below 2000 RPM and likely better fuel economy.

These two are a classic trade off between power and manners. So, it comes down to what is most important to the driver. I would also add that driver personality and perception is at play. I like a hotrod idle and have a high stall torque converter, so I would take the 228/232 camshaft all day long. However, the owner of Cam Motion where I work has a late model stick shift Corvette as a daily driver and he will gladly trade off that extra horsepower for better manners and drivability.

flipp

Thanks I think I am more of the hot rodder so the first cam sounds right up my ally.

speedtigger

iTrader: (16)

It should work really well for you in that combo.

JrTheJunkMan

Doing some update this winter to my race car
Switching over to LS and looking for cam recommendation

LQ4 with 317 heads really would like not to have to fly cut
750cfm carb (also have 850)
Victor Jr.
MSD 6014
1 3/4" headers to flowmaster 40's dumped before axle
TH400 currently 3500 stall but thinking of switching to 4-4500 stall
3.73 gears
255/75/15 tires

Will be doing these with Cam
Cam Motion double valve springs
LS7 Lifters
LS9 Gaskets
ARP Rod Bolts

May spray in the future but would be max 150 shot

Have been looking at Junkyard Dog Cam,MS3, and Pollutor V2
but really leaning toward a Cam Motion cam

speedtigger

iTrader: (16)

The Junkyard Dog was created specifically for guys wanting a street/strip camshaft for a stock shortblock. It was designed to optimize the 4000 to 7000 RPM range and have acceptable valve clearance if the heads have not beem milled more than .010". The JYD flat out works. It will deliver for you.