TN94Z

iTrader: (14)

I will be building a 408 over the winter and plan on running a procharger next year. My question is, in the build what do I need to watch for and what do I need to be aware of as far as the engine build goes? Any extra precautions to take? I will be running a pretty big procharger...but I haven't decided which one yet. Thanks

chae

iTrader: (8)

You may want to try searching the Forced Induction section on this site.

The Black Mamba

Just make sure the CR is low and don't make the mistake of getting a D1 or P1. Get the F1 straight from the get go and you will be MUCH happier...

TN94Z

iTrader: (14)

I have been reading it all week. But I haven't come across anything like what I was looking for. And I have had no luck searching for anything in a long time. Seems like it is broken alot. Thanks

TS6

iTrader: (41)

My D1/408 combo has made really good power, better than some peoples F1 setups. A D1 is definitely not a mistake, and unless this is a max effort drag car, either blower is going to be too much for the street anyway.

To the poster, one thing my builder did was go with 1/2" head studs to help with clamping.

TN94Z

iTrader: (14)

This is a max effort drag car. It will never see the streets. I will definately go with head studs. Thanks

98transguy

iTrader: (7)

if it is a max effort drag car go eith f1-c or f1r

chae

iTrader: (8)

It sucks that search is crummy on this site. I don't know much about forced induction, but look into lowering compression ratio.

Blownramair

ill be doing a similar combo with a ls2 block over the winter as well... havnt made up my mind if ill be getting a procharger or a turbo yet... when i get this combo going - ill let ya know what im finding out... money will be tight so this may take longer than i think to build...

ty_ty13

iTrader: (42)

if this is a drag car you want higher compression... atleast 9.5:1 this will make alot more hp in the midrange and peak....

WickedC5

iTrader: (3)

comecorrect

I would start with at least a F2. Run a vac pump, min 2" primaries / 3 1/2" collector headers, A/W intercooler or run on alcohol, blower cam, ~9:1 compression, 1/2" studs MSD digital 7, Fast system, ect.......
In a light race car 7 sec timeslips!
MIKE

EPP

iTrader: (22)

The problem on the LS1 f body cars has been the widest belt has been an 8 inch. With the 8 inch wide belt I really don't recommend going any bigger with the blower than an F1A. ATI Performance Products have just recently come out with a 10 rib wide belt assembly to use with ATI ProChargers on our f body's, which is going to change everything! Bob

ls1290

iTrader: (20)

That is a lot of supercharger. I think a 454 would not be able to run a F2 to it full potential let alone a 408. A F2 flows 2700 CFM which is 700 CFM than a F1-R, 950 CFM more than a F1-C, and 1100 CFM than a F1.

I would look at a F1-C or a F1-R if you want to go pretty radical in a 408.

Keith

comecorrect

I run a D2R with 408ci in my stang. I believe it's rated at ~2800 CFM. For a race car I wouldn't consider anything smaller than a F2. The Ford guys are using F2's on smaller engines and making good power. For a street car I would have agree with you. However I would run a F2 on the street but I'm a little crazy.
MIKE

Pro Stock John

iTrader: (34)

10 rib would be awesome, those guys are really in tune with the market.

TN94Z

iTrader: (14)

I haven't heard anything about the 10 rib setup..hmmm.


The F1-r is the particular one I had in mind. Not set in stone or anything. Thanks guys. This is the kind of input I was looking for.

So higher compression like 9.5:1 for a drag only car??? I had thought about an LS2 block for my build, but wouldn't the iron block be better with the higher boost?

ls1290

iTrader: (20)

That is a greatly debated topic. They are lots of LS2 blocks out there, at 402 CID, making good power. I myself when with a LQ4 block for its extra strength.

Keith

ls1290

iTrader: (20)

OMG, what kind of power does that thing make.

Keith

comecorrect

The D2R was rated at 1600 HP and a max speed of 53,000 rpms. With it slow max speed and the fact that it doesn't like to to be over-spun. I doubt it could make 1600 HP. It could make 1100 RWHP but you had to lean on it. The F2 is a better blower and makes more power. I run a 50mm cog pulley setup. I wouldn't used a ribbed belt on a race car. Run a good BOV and it with work great. Good luck!
MIKE