Lurius

iTrader: (7)

Well I am starting to look around at what cam should go in the 408 im building. I was lookign at the thunder racing 224/227 .563/.569 114lsa but am unsure if this is large enough for the motor. I have heard some people talk about a cam being too small or too large for a 408. I barely speak cam language so would appreciate some help! I will be driving the truck daily and drivability will be an issue. Tranny is an auto as well. As for emmissions, I am fairly certain if need be I can pass one way or another, but this beign texas, I dont think it will be too hard either way. I will likely only be spraying about 150 shot, maybe sometimes a 200, and compression will be around 10-10.5:1 in the end.

Thanks a lot guys,
Lurius

ArrestMeRed99Z28

iTrader: (1)

that cam will be way to small for your application. I'm not sure how the Texas Giant is for streetability, but it's the only off the shelf stroker cam that I know of, I'd have my engine builder spec me a custom cam to fit the intake, heads, and compression that I was going to end up with. Good luck with your build.
AJ

Lurius

iTrader: (7)

Oof, that cams pretty big. Was thinking maybe high 220's or low-mid 230's for the intake/exhaust durations. Anyone else got ideas?

-Lurius

orangeapeel

iTrader: (18)

I would look in the higher 230's range. Rule of thumb when chosing a cam for a 346 is add 10 to the duration for that particular st. So your 224/227 would be a 234/237. That still seems like it is under cammed.

forgedbluess

iTrader: (1)

Yea thats a really small cam for a 408. Im doing a 370 and looking for a 240/250 cam but im looking for ever bit of hp i can get to make it to the 9s.

orangeapeel

iTrader: (18)

And you aren't doing it with this: Forged 347, rossler th400, 4400 nitrous stall, transbrake, 300 shot of juice and stock rear end with slicks and skinnies....because? Stock 10 bolt?

Z'mnypit

iTrader: (58)

230's is still way small. Ive got a Comp 244/248 .612/.615 113lsa and its still a little small, but I like it. Made good numbers on the bottle also.. There are 3-4 other people on here running the same cam also making good numbers

slow trap

iTrader: (22)

in that sweat hog of a truck it will take some decent bottom end tq to get it moving off the line off the bottle so i'd say something like a 236/242 or so would be a decent performer n/a and on the bottle.how often are you going to be driving it on the street and how much are you going to be racing it ?

forgedbluess

iTrader: (1)

No i have a rear end at the house now i just decided to build something that will handle a 2 stage nitrous setup like i want.

Lurius

iTrader: (7)

Mostly driving daily. To/from work/school. I dont get to the track much now, but thats ebcause I havent made much of an improvement lol. Once I get the motor together and get a built tranny i'll likely be going 2-3 times a month.

When yall are saying undercamed, do you mean it wont be makign nearly its full potential, or that it would not run well with such a small cam? Im alright with losing a little performance since it is a DD, but I want it first and foremost to run good and be a reliable engine that I can depend on to get me to work and school. I figure even losing some of its full potential it will still make decent power all things considered.

Thanks a bunch for the input guys, its really helping!
-Lurius

slow trap

iTrader: (22)

something in the 22x range in a 408 will be out of breath pretty early in the rpm range and your tq will not be much higher than a slightly bigger cam so your useable power will be less with that small of a cam.

99blancoSS

iTrader: (115)

24x/26x

getusum

iTrader: (42)

Now it's time to call the MAN on this topic!!!!! Yo Patric.......this guy can use your help....lol.....he is da man

NOZR1

iTrader: (5)

I went with HPE's Big E cam in mine. I should know in a few weeks how I like it.

Lurius

iTrader: (7)

Would a 240's range cam be daily drivable you think? This is the only thing im afraid of lol. I dont want to end up with a track only truck for my daily driving haha.

-Lurius

orangeapeel

iTrader: (18)

In a 408? yes.

cws T/A

iTrader: (3)

T REX / 408 http://video.ls1tech.com/category/Ca...a3ad663d29.htm

99blancoSS

iTrader: (115)

Yep, with a 408 you've got the cubic inches to run a 24x/26x cam and have it be perfectly streetable

cws T/A

iTrader: (3)

daily driver 408 in a heavy truck , build for torque , horsepower will follow

Lurius

iTrader: (7)

I like the sound of that GTO in the vid you linked. Especially that 6.7L badge! I had been thinking of the same thign to go on the tailgate. Anyone know where he got it?

Would yall reccomend getting a custom grind cam? I was thinking of just telling them what im building, what I need and seeing what they come up with.

-Lurius