allngn_c5

iTrader: (3)

This is a planning stage project, so I would appreciate all the help that you guys can offer. I would like to build a 408 iron block with all the goodies. Forged rods, dished pistons from Diamond, and etc. etc. etc. Not sure on the cam yet, but probably something custom ground. AFR 225's with some custom porting on the intake and exhaust side. Shooting for 8.5 to 1 compression. Will the D1SC have any issues at 12 lbs of boost, or should I go higher and use the F1 unit ?? Would like to make at least 600 rw hp/tq
My clutch, and drive shaft can handle it, what do you think about the STAGE III DTE rear end with brace? Will it be ok, it has 3.42's in her. Already have an oversized radiator, and a built in oil cooler. Would you run a high flow Meziere EWP on this motor? Will 60 lb injectors be enough? What fuel system will supply enough fuel by itself without needing a boost a pump?
This motor will be exhaling though my current LG Pro Long Tubes w/o cats and the Quad Tip BBE bullit w/o mufflers. Anything you feel I left out, feel free to add. All opinions and ideas will be greatly appreciated. If you yourself have an iron block procharged 408 please say so and let me know what if any problems you have had. Should I upgrade my trans, if so that will be for sale also. Very wordy, sorry, big project.

Also my current motor would be for sale minus the exhaust 473/431 @ wheel

Boostaholic

iTrader: (4)

The difference between D1 and F1 is probably your target RWHP, but if your only wanting 600 then you should just stick with a D1

WHPLASH

iTrader: (22)

I'd go with the aluminum block. The iron is about 70-100lbs heavier. Probably should have a FMIC or meth for 12psi.

Your gonna have to work some OT to pay for this setup. LOL.

Boostaholic

iTrader: (4)

All of that is probably not necessary to make 600hp

allngn_c5

iTrader: (3)

I said at least 600 to the wheels. Hoping for more. LOL Thanks

koji777

iTrader: (3)

I'm making 750,????....... F1R@15lbs

SVC707

iTrader: (33)

what is the rest of your setup, motor wise, and what are you using to supply fuel. im in the process of getting mine together and was told i should be at 700rwhp.

as to the original thread starter. 600rwhp no problem. ive read once you get to 650+ its just not so street friendly anymore. mine is not a daily driver

as for weight issues, its not so much unless you are strictly drag and road course in my opinion. i did install the UMI k member, removed abs, and a/c, so that should make up for some of the extra lbs

Boostaholic

iTrader: (4)

Ok well how much do you really want to make? Its much easier to recomend parts with a solid goal in mind

BIG BAD BLACKSS

iTrader: (4)

With a procharger and your power goals i thin your looking at an entirely too big motor. Id look at a 346-370 with a D1. You can do 650-700 at the wheels without too much work with that.

SSilverSSurfer

iTrader: (8)

if you part out your motor doug let me know, i think youd be better going aluminum with a F1, later your gonna think 600 is not enuff, lol, good luck buddy

Gary98Z

iTrader: (9)

If you're going with bigger cubes, might as well go with the bigger blower too. At least an F1C or F1R. After you get used to that power, the D1 will pretty much be maxed out, whereas the F series will still have rm to grow. Plus, if you upgrade your kit at the time of purchase, it's only $400-$500 or so more, whereas if you wait, it'll be several thousand more.

Gary

TS6

iTrader: (41)

I have that exact build being done right now at FLP. 408 with D1SC, fmic, Dart heads, etc. Looking for around 700 rwhp on pump gas. It is being completed now, ic pipes are being coated and car should be done sometime next week. PM me for more info, but let me just say that if you have a decent stock motor the 408 isn't much more money. I am spending about $1K more than if I just had my stock motor built. I don't see why more guys don't do it, they bitch about cost but if you're going to spend the money to forge a stock motor the only difference will be the block itself, which can be had for just a few hundred dollars.

SVC707

iTrader: (33)

Id like to know what you get when youre donw with yours. Im trying to finish mine here at home but just dont have the time. what size pulleys are you running. One of the differences I have are AFR 225's. My blower pulley is a 4.00 and the crank pulley is 7.xx something i have to measure it again i forgot

oh yeah what are you running for fuel?

BlwnTA

iTrader: (18)

See my signature...I would get decent heads and a FMIC, then you be fairly equal to my blower only numbers @12PSI

Blown408

iTrader: (4)

https://ls1tech.com/forums/dynamometer-results-comparisons/410909-408-w-et-225s-f1-procharger-dyno.html

Here is my information. This was on 93 Octane.

allngn_c5

iTrader: (3)

My thoughts exactly. I want to set up the car for around 650-700 rwhp and get used to it, and hopefully not break anything. I don't want 800 rwhp and lose my $1800 clutch in the process, or blow out the DTE stg III rear. I would like to have a mild setup on the F1 and as I have money to upgrade for more power, or broken parts needing to be replaced/upgraded I will be able to up the boost.

I really need people to chime in with there setups on a 408 for 650 , 700, and 800 hp. How much boost will the unit run, what are my fuel requirements, and can I meet all those levels on some 60 lb injectors, or should I get something bigger? Thanks for everything so far. Lots of good info to digest.

allngn_c5

iTrader: (3)

I want this 408 internally built with more power in mind. I want everything to be able to handle more power then what I will be putting to it. A blower can be set at different levels of boost, so I would like my internals to handle more then my MAX boost output. That way I can set it lower initially and get used to it. If I break something I know I'll need to go to something beefier. If that Exedy twin plate goes, whats next, a triple plate?? Lots of money to fix it once its broke. Thanks again.

Blown408

iTrader: (4)

I would go with RC 75 lbs injectors. If the 60's keep up, you will be running them on the ragged edge in my opinion. I bought a complete fuel system from Nast Performance, Nate should be able to hook you up with everything you need.

I pulleyed my F1 to max out the input impeller speed, but I only saw about 15lbs of boost. I had the SDCE tension setup, but I think the belt was still slipping. Be sure to use a good name brand belt too, like Gates or Napa.

Be sure to go with a front mount intercooler setup and use the good t-bolt style clamps.

TS6

iTrader: (41)

Bosch 420 pump, can't remember what injectors, 60's or 75's. I wanna say 75's. Pump gas. No idea what pulleys, or boost level. Thats why I paid FLP to do the whole thing, that way I don't screw it up.

koji777

iTrader: (3)

I'm running a Weldon 600A, good for 750 FI, they've(NastY) got the new Magna Fueler, good for 1000hp FI and I think 1200+hp n/a. I'm running 96# low imp injectors(Versafueler) PM me if ya need any more specifics