Hello gentlemen, ladies too if you're on here. currently this is the set up I'm going with and I wanted to get some of yall's input, pros, cons. Anything will be highly appreciated. Im saving up for the rotating assembly right now but I do have just about everything else.

Lq4 6.0, not yet bored for a 408 yet
823 casting heads that has been ported
new springs, seats, locks, ect.
rocker trunnion kit
243/259 cam
fast lsxr 102 intake and TB.

 

damn that's a FAT *** cam lol. What's the LSA?

Looks to be a stout setup and you seem to be running some decent air w/ that much CI, heads, and intake.

I wonder how it'll do down low.

 

LSA? elaborate a little more please lol.

 

Lobe Separation Angle is what he was asking for.

 

Ah gotcha, lift separation 114° duration @ 0.50" lift 243/259

 

This camshaft is similar to our Street King Rectangle Port Stroker camshaft (244/256 on 112):
http://store.cammotion.com/street-ki...-port-camshaft

A camshaft with specs like that is an aggressive street/strip type camshaft in a 408. It may have a nasty, lopey idle and buck at low RPM in a stickshift car or with the converter locked, but power-wise it will still have plenty or torque as long as you have a converter of about 3200 RPM or more in an automatic. This camshaft will want about 11:1 - 11.7:1 compression.

I just depends on who you are and what you want. As a hot-rod guy who like to make power, I would love it. Somebody who is sensitive to rough idle and big cam manners would not.

 

That's exactly what I'm going for.

 

Then definitely consider our Street King. I think you will love the power and quality of our camshafts.

 

Few questions on which parts to use, any input?
Head gasket
Timing chain
Oil pump
Fuel injectors
​​​​​

 

Head gasket: http://store.cammotion.com/gm-62-ls-...ad-gasket-each
Timing Chain: http://store.cammotion.com/gm-high-p...s-timing-chain
Oil Pump: http://store.cammotion.com/melling-10295-ls-oil-pump
I have no clue on the injectors. Not my area of expertise

 

Thanks alot! I really appreciate it.

 

On the timing chain, I ment the whole kit sorry.

 

Once your shortblock is done and you know where your pistons are sitting in relationship to the deck then pick your head gasket. Make sure you check your PTV clearance with that type of duration.

 

We sell the GM gears seperately. Here is a link to the components: http://store.cammotion.com/parts/ls-timing-chains

While on the components page, check out the Hinson C7R timing chain. It is what I use on my personal builds.

 

Does anyone know if you can cut the diameter bigger for the spring retainers on my 823 casting heads? I purchased retainers, springs, locators, and locks. As of now the springs are installed without the retainers because they didn't fit. When I got the heads ported that's how he installed it. I know they sell the cutting tool for the retainers but the spring pocket is small and there would be alot of material being removed. has anyone done this to these heads?

 

What springs are you using?

 

Comp Cam PN 7228-16
Conical Valve Springs 136 @1.800" / 412 @1.170"

 

You can use stock locators with those springs.