While in the midst of deciding on an engine for my project IROC, I found a 400 for sale and decided to pick it up. I have a machinist lined up to do all the tooling, but I wanted realistic suggestions on intake and heads. I did do a search and it seems using the stock tpi is worthless. Since I would have to go to a different intake vortec heads would be out of the question for this? The only other intake I could think of was the stealth ram and the miniram. Here is where the root of the question is: I want to do this right the first time, for my application a 406, I want to make sure I did not waste my money on the engine work if my intake/heads will just restrict it. I am open to any suggestions, I am limited in money but I can save until I scrape enough together. If it matters my goal with the car is 13's to high 12's. My tranny of choice is the 700r4 I don't know what I will be using as far as gears I am guessing 3.73, any suggestions would be really helpful to me. Thanks :hail:

 

I sure as hell hope its not a bad idea, since my stealth ram is currently bolted onto my 406 thats in my garage I'll be able to tell ya if its bad or good in a couple months. I'm positive that you'll be able to pull low 13s to high 12s on a 406 thats properly built, and dont buy that $900 MiniRam.....Why would anyone pay so much for that thing now that there are a couple great alternatives (HSR and LT1)?

 

youll have no problem at all getting in the 12s with a stealth ram equipted 406 and 3.73 gears provided the heads and cam you chose are capable of flowing enough air to make about 400 plus hp.,and you have 10:1 compression or higher (even stock vortecs do that)now if you stick AFR or CANFIELD heads on that block and 3.73 gears and a cam with at least a MINIMUM OF 220@.050 lift intake durration that 406 will get you in the low 12s or better in most cars
look on this site for combos


#101,and #70 are good examples

http://www.ryanscarpage.50megs.com/combos14.html

 

Thats the kinda of stuff I like to hear I'll be running AFRs and a cam with a hair more than 220@.050", so maybe my goal of 11's is attainable. :lala:

 

Hey thanks for the replys fellas. I am not going to build the motor with the thought of a super charger in the future. I want to keep it pump gas, but I wanted to try and squeeze whatever power I could with higher compression. What set of AFR's do you think is optimal for all this? I may run a 100 shot or something in the future, but that shouldn't really have a bearing on too much. Scott, keep me up to date on the success you have once you get that beast up and running. Thanks again

 

Wow grumpy that is a great site you listed. Combo 101 is very impressive, that really builds my enthusiasm tward this. Couple quick questions, one is about fuel injectors(size), and a question about the cam, would that one be good to run with stealth ram(or fuel injection in general). I consider anything lower than 13's to be icing on my cake. Thanks again. :hail:

 

IROCJTOWN
the cam listed is a good one for race car use with a carb intake but the LSA is too narrow for the most effective EFI use a very similar hydrolic roller cam that works slightly better with EFI is the CRANE # 119841

http://dab7.cranecams.com/SpecCard/D...1=Display+Card

IM useing the #119661 below, as its about as wild as a street driven car can handle

http://dab7.cranecams.com/SpecCard/D...1=Display+Card

and its really too wild for a daily driver but the #119841 will be the better match to the steath ram for racing, please keep in mind that any cam with over 220 dur@.050 requires a high stall converter, rear gears in the 3.50-4.11 or taller area and extensive reprograming plus checking all the clearances to work correctly, you cant just drop a hydrolic roller cam like that in a stock engine and not be building a total mismatch now as far as injectors go Im running 30lbs at the monent but the engine leans out slightly on the high rpms due to lack of pulse width 32lb or 36lb would be a better choice if your planing on making serious power , look below, use the calc. youll find you need 36LB injectors, thats why I will soon be changing to 36lb size also

http://www.rbracing-rsr.com/fuelinjectors.htm

 

I know what you are saying about the cam not being for daily driven cars. My camaro isn't a daily driver, so thats not an obsticale for me. I new going into this I would need to reprogram the computer, I just haven't put much thought into wich direction I'll take with that yet. The car sat around a good bit and was owned by slight red necks, I am going to work through the entire car before I take it back out onto the street. It's got a lot of small annoying probs(key only works in passanger door,eletronic locks only work on the driver door, power mirrors dont work at all, power mirror seems to be going...ect),but I am just crossing each bridge as I come to them so the reprogram will prob be tward the end of the list for things to do.

 

Why dont you build a 377 with that 400 block?

But, I'd stay away from fuel injection if you were going with a high rev motor.

Just a suggestion. (there are a lot of screaming 377's by me)

-Doug