Waldo308355

Hey guys need some help on cam selection ,iron 5.7 ls1
basic run down on engine
​​​​​862 heads port and polished inlet valve upgraded to 1.95 heads being shaved to 58cc waiting on flow numbers as heads currently being worked on.
forged -6 pistons think we worked compression around the 12.5 to 1
Forged hbeam rods
ls7 lifters
Merllings hi volume oil pump
Electric water pump
Trailblazer ss intake 50cc injectors
Holley sniper 92mm Tb
long tube headers full 3inch exhaust
The car is 2500 lb
4l80 e transmission will put stall in to suit cam choice
3.7 gears 15 inch tyres 255/60/15 drag radials
Car is weekend fun car some strip time as well.
I have had so many recommendations so fairly confused I was looking at a 226/232/112 600/600
if anyone has anything else to make this a better combo please let me know cheers

jmilz28

iTrader: (13)

1. This needs to go in internal engine. 2. For all the money you're spending, it would be ideal to find some 243/799 castings and work those. I bet you're giving up 20/20 and significant area under the curve. 243 heads are cheap now. https://www.ebay.com/sch/i.html?_fro...+pair&_sacat=0 Cam is fine, install, tune properly, send it. So many good off the shelf cams now, unless you're REALLY spending money on a high dollar build, custom cam probably isn't worth it. 3. What kind of car is this at 2500lbs?

jmilz28

iTrader: (13)

Or you could just call Cammotion, tell them your specs, and order the cam they recommend. https://ls1tech.com/forums/generatio...arathon-2.html

RPM WS6

iTrader: (3)

How do you have an iron LS1?

Is it an aluminum 5.7 or did you actually mean some other variant/displacement?

Waldo308355

Bored 4.8 to take ls1 rods and pistons and ls1 crank

Waldo308355

I did message them they gave me 2 different options one was the titan king the other was a ground cam 240/248 111+4 629/620 unsure what it would be like in the mid for both of those cams

grinder11

iTrader: (1)

That Titan King on an LS1 will need a Helluva high stall converter, for sure. Its not gonna be an easy cam to live with on the street. The only way I'd go that rad is if the car is more strip than street. Your 12.5:1 compression will help it some. I had a 238/242, .638"/.646" lift on a 114° LSA, but this was on an LS7, so not apples to apples. It drove fine, good tuner+80 more cubes will do that. But the cam your looking at is considerably more rad than mine was. But if a strip car, should be great. IDK about HPDEs, though. Youll give up a lot of low end to lower midrange power with the Titan. My .02.....

Waldo308355

It's definitely a big cam and I believe to big for what I'm going for definitely like you said for an ls1 , the 226/232/112 is true tested cam with my tuner he constantly gets between 420 to 440 hp to the wheels with cam heads and exhaust ,I was hoping going little bigger cam with car being so light with decent stall but drivability is also something to consider As its not a full track car.

NAVYBLUE210

Usually for a street/strip I suggest Cam Motion Titan 4 227/232 113+4*
But with your 12.5 comp I would suggest Titan 5 232/238 113*+4* will need at least 3k stall.
With 3.7 gears and 2500 lbs minimum & 3k stall Titan 5 is the sweet spot imo.
Also agree on the get some 243s.

Waldo308355

Thanks for the cam suggestions mate appreciate it ,because the 243 are the best flowing out of the cathedral ones I can source them at one point for sure,for now I will use the 862 which have had a fair amount of work done on Them.I honestly would look at some after market ones a little later once its finished also so you think the heads in the current build will be the limiting factor then? I do some people's say just because the 243 flow better some say the 862 actually make more power ?

68Formula

From what you've told us, that cam sounds way to large for your application. I'm rather shocked they would recommend this cam for your setup. It's more for a stroker engine.

Waldo308355

Yeah it thought it was way to big as well I think the titan 4 or 5 or even the cam my tuner suggests is in the area needed I'm just not sure which one lol 🤣

Fast355

Once they are ported, the 862s will generally make more power than the 243s. I have a set of 2.00" valve 862s that flow close to 300 cfm, Lloyd Elliot ported FYI. They will hand a stock 243 head its butt. Once a GM cathederal port head casting is ported the only real difference between them is chamber size. Having Lloyd port the 862s was not much more than people ask for used 243s and that was including quality dual springs, valve job, cleaning, GM 2.00 valves, etc.

Waldo308355

So you think at the present time fast355 that just sticking with the 862 that I'm currently awaiting on will be fine ,I am.hopefull of getting close to the 300cfm mark but they will be fine to also.run the cam motion titan 4 of 5 with what I'm putting together ?

Waldo308355

Just had a reply from jones cams here is his recommendation
244/254@50
.375/.360 lobe lift
.637/.612 valve lift
114 lsa
Unsure If this is to big but I have read very good things from others on Mike jones and everything points to that he knows his stuff .We are just waiting on some flow numbers for the heads and it may change but he said my compression certainly helps.