kkslds

iTrader: (59)

I have a D1sc on my 02 Trans Am. I traded some interior pieces for a 6.0 iron longblock. I really would like to put an aluminum motor back in my car since i've already added quite a bit of weight from the procharger setup, 12 bolt, etc., but depending on the motor size I go with will depend on which I use.

With the stock motor intake to oil pan the car made 499/461 at 10.5 psi through a stalled auto with supporting mods. The motor has a pretty safe tune imo with a solid 10.3 afr at wot. It probably could have made more power but I'm wanting this motor to last until I get another one built.

I'm asking this question because I have always wanted an aluminum 402 or the livernois 404. Why? I really don't know. Lol just figured that would be about right for my procharger. Then you have 'Trust's old car make 800+rwhp on a 396ci. Will the extra stroke do more harm than good without going to a bigger blower (which isnt out of the question)? If spending an extra 1k on a stroker crank isnt worth it let me know.

Cost is a factor to an extent but I want to do it right the first time. If I need to save for something thats what i'll do. Let me know what ci you have, iron or aluminum, and prefer a d1sc but if not state what blower you have.

LS1RedZ

iTrader: (19)

IMO, I wouldnt spend 1k on a stroker crank. Put it towards a fuel system (if you dont have one already). I have a 370 with stg 2 LS6 heads, LS6 intake and stock TB makin 754rwhp @ 15psi. This was on pure pump gas with the stock ATI intake hat. I know i could prolly get close to 800rwhp by changing the intake hat and exhaust up. The torque my setup made is what shocked me. It made 707rwtq.

blue00ZZleeper

iTrader: (5)

X2!! I have a very similar build going together at the moment. 370, stage 3 prc LS6 heads, LS6 intake and some other stuff. I'm hopefully looking to run around what he did but I also have methanol. Shoot to build a "trusts" twin lol. There needs to be aother one of those running around lol

reamo04

iTrader: (9)

346-370 is as far as I would go. Anything bigger than 383 I would go with an f1 for sure.

JC70SS

iTrader: (7)

346 or 370

How are you only making 499 on 10.5lbs? Do you have a stock cam? List all of you mods including exhaust set-up.

kkslds

iTrader: (59)

It is a BONE STOCK MOTOR. Intake to oil pan. It has never been opened. Stock intake, cam, heads, etc etc. Also through a stalled automatic.
I was actually happy with the numbers

2002 Stock motor/Ported TB/2Bar SD tune
4L60E/Pro Yank 3600
Moser 12 Bolt/Trutrak/3.73s
D1sc/EPP Front Mount/Ati Race Valve
Ati SuperDamper
Pacesetter Longtubes
3" True Duals over the axle
81# injectors
Twin 340# pumps in the tank
E85
Alky Control

I have an SDCE setup waiting to be installed also

Trust's car was a 396 I believe. I am on E85 and Methanol also.

What does it take to make a 396 out of an 6.0 iron block from the 370?

crazylane

iTrader: (19)

I have a buddy that runs an 408 12 lbs of boost, and he is making a little over 640. But you also have to think about that power band. More cubes set up right will be giving you some major ponies down low with a a few lbs of boost.

Another guy with a 408 F1 on 14lbs was at 776..

kkslds

iTrader: (59)

My goal is in the 800rwhp range. I would like to get a single digit pass from a stock appearing vehicle with street manners of a car I could drive everyday if I wanted. I don't plan on cuttin weight anywhere and switching to an F1 isnt out of the question and if necassary to meet my goals without pushing anything over the limit than thats what will happen.

My car is full suspension with the exception of shocks/drag bar. I plan on a performabuilt in the near future so deciding on what rotating assembly to go with is the problem. Which ever setup I go with I've really liked the TrickFlow heads and will probably be the head I end up with. As far as an intake I haven't decided yet.

COPO9560

I would think a 370 with a set of ported heads would allow you to get close to your goals and re-use a lot of your existing pieces for minimum cost.

Add a set of ported L92 heads, intake, throttle body, MAF and maybe an F1 to be sure.

fatmat80

Anything under 400 inches is my vote with a 383 being my first choice..

airforcemanss

iTrader: (23)

what is the point which bigger cubes and 15+psi? i would think a 347 would be the best on the street. i think anythin bigger would just go up in smoke with all the torque. i hope some of the "been there done that" guys chime in. i would like to know as well because i am working towards a "been there done that" guy

Blown06

iTrader: (32)

I'm running a built 346" motor w/D1sc in my truck. I'm spinning it a little past max rpm, truck weighs 4550 with me in race trim and has been 10.40's. I would think that your single digit goal is plenty doable without breaking the bank.

blk00ss

iTrader: (66)

I've got a 404 with the d1. It's nice having the umph down low for around town cruising. And it helps spin the lil ol' d1 up pretty quick from down low. But I think with a well setup 347 you can max the d1 out and make te same HP as a bigger motor. Just the bigger motor isn't going to work as hard and will have more torque and feel more
peppy.

dcvingv6

iTrader: (3)

It's funny, i was getting ready to post a similar thread... It's nice to know I'm not the only one going thru this agony!!!

I think I'm going to end up doing the 408, my thoughts are if your going to do a motor, and spend all that money, might as well do the 408, in the end it's the additional cost of the crank.

I would think that with the 408, good heads, cam, and all your other mods you would hit your goal! (which is about where i figured I would be, without the e85, which is unavailable here )

Plus the other thing part that goes through my mind is that at that point, the only thing that will be limiting the set up is the blower itself, which IMHO is not a horrible problem to have...

Run the setup with the D1, which you already have, and if / when thats not enough power, you can make the upgrade to the F1.

Again just my $.02 from being in the same boat!!!

--Mike

reamo04

iTrader: (9)

why a 383? Most the ones I have seen have problems making bigger numbers being an undersquared motor (more stroke than bore). I think a 370 would be perfect.

kkslds

iTrader: (59)

Bump. Looking for more oppinions. VAspeed's aluminum 402 is looking pretty enticing

So far most people think the D1 will be a little small for the cubes im really wanting. Which F series blower would you go with? What is the differences/limits between the F1A/C/R?

We are piecing together a procharger kit for my brothers car and have everything but a headunit pretty much. He could use my D1 if I found a good F series blower.

buick_lsx

my last motor wasnt a ls motor, but it was 464 ci, D1sc, 10 #s, 767hp...how much power you looking for

kkslds

iTrader: (59)

Not real sure on an exact number. Somewhere aroung the 800 range would be nice. I want to make as much power as possible that I can make usefull. The number is more or less to brag about, but since I have no intentions of cutting weight anywhere it's gonna take a considerable amount to propel a near 4k # street car to single digit.

Im basing my hp range off of trusts old car since weights will be similar and he barely made it into the 9's. Im keeping ac, front and rear seats, etc. etc. I dont want to cut the car up anywhere. Will be adding a wolfe 6 point cage and thats about the extent of a drag car feel that I want.

Car will rarely see the track, but will go a few times each season. I need a car with excellent street manners.

BLNLS1/RX7

iTrader: (2)

My D1SC puts down over 700RWHP with a 406 Iron block.

ryarbrough

iTrader: (18)

I'd go with a 402 and a f1c. I've personally seen that combo make almost 900 to the tire and go 9.30's in a full weight car...

It was a killer setup that would have been in the 8's if the motor didn't let go because of a voltage problem (threw the belt) that killed a fuel pump and melted a head.