fast414

was thinking of a 383 stroker with a killer set of stock ported heads since they flow so well and intake and a nice custom cam with about 11.1 comp. thats the basic of what i would like to do to stay on a budget but still make some good power . i would be happy if it made 400 hp. it is my first motor build and am new to the lt1, is it a good direction?

lt1noob

iTrader: (4)

if you only want 400hp dont bother building a stroker, this can be acheived with full boltons and a decent tune.

fast414

what kind of boltons do you suggest i am in the position to use the stock heads so what should i do to get the 400 hp

lt1noob

iTrader: (4)

heads or stock ported heads, cam, tune, little things like cai, ported tb ect.

BALLSS

"if" you need a rebuild...buy a short block 383 and put your cam and Head choice on.

Golen makes a good short block. AI or LE make good head/cam packages.

If your bottom end is in good shape than just do a head/cam package

fast414

i have no choice to use the stock heads because im on a budget. so would a 383 or 350 with stock ported heads a nice cam with headers ported tb and a good tune with a couple other little things get me to the 400hp or more mark thanks

jays97 t/a

iTrader: (2)

should be around 400 just depends on if u have 6speed or auto,im assuming u have a 6speed because u didnt mention a stall

BattleShip

How much is budget? Why 400 hp? Do you mean 400 wheels or crank? Is it a daily driver? Gas mileage important? Will you do any of the work? Is engine running now? Whatg is its condition? Auto stick?

Lt1junkie

iTrader: (9)

LLyod makes killer H/C packages

Prototype007

iTrader: (2)

Spray will get you the numbers you want quickly as long as you used common sense and don't cram 300 hp shot jets on stock motor.

C_Rules

iTrader: (7)

full boltons and call advanced induction for a h/c package.

fast414

its an auto and it a "weekend car" but i want it to be very street able and nos is not the direction am going . its fully stock right now and high 11's would make me very happy weather 400hp or not i just want to run high 11's thanks

fast414

its auto, budget means stock heads possible stock or rebuild short block... and as long as it will run around high 11's that would be awesome thanks

BattleShip

Your goals cannot be reached with stock heads on a budget IMO.

To get 11.99 with a 3700 pound car you need 434 RWHP. That will require a power adder such as NOS (ALOT), stall, tune, and gears. I do not see a budget car making it to the 11's and lasting.

To get in the 11's is a challenge to do it on a budget will take alot of talent and ability to do all your own work.

SS MPSTR

iTrader: (1)

...just curious as to where you got your information.

BattleShip

I wrote a program to calculate et given weight and hp, or I can plug in a weight and time and get hp. There are many calculaors on line that will do it.

Few give same numbers because of assumptions but allow estimates. 3700 is probably on heavy side for weight but have to assume not everyone is 150 lbs.

Dave J

iTrader: (2)

I think you program is off.Do you even enter D/A numbers?

numbers in sig were done in a 451 rwhp car@3450 lbs with a crappy 60ft and a +1800 D/A

SS MPSTR

iTrader: (1)

I never trusted those online calculators, because they seem to ignore other factors that affect the ET, and power. Lots of Chevelle guys running deep into the 11's, with comparable weight and less rwhp. Not saying there isn't some credibility to the program for the purposes of discussion, but I think we can all agree they are not conclusive or absolute. Just my $0.02.

BattleShip

There are many possible reasons for the difference. The weight is off, the hp is off, or the et is wrong or other problems which would fill a page.

I think your dyno numbers are off. The ET’s are calculated for sea level. As I posted in the following thread

https://ls1tech.com/forums/showthrea...t=#post9399774

I wrote a program to reflect the research done by the link above. My program uses their formula, I look forward to seeing something that disputes their findings with an equal quality of research and analyses.

Now for my questions to you

Do you believe your dyno can accurately measure your HP with a large stall and a transbrake?

I know many that have ~4000 stall that have LOW numbers on a dyno compared to their track tmes. That is not a problem with the calculator it is a problem with a dyno measuring some systems.

To verify my claim go to ANY track and there will be many who changed to a larger stall, went faster, but dyno'd lower. Does that mean the track timers were wrong? NO, that says the dyno is the problem.

Dynos showing low hp on a large stalled car is consistently reported on all sites, so why would your dyno be different?

PNYKLR-TA

iTrader: (1)

I Also Agree That Is A Little Off, There Is A Guy Who Posted In My Cadillac Cam Thread That Has 375rwhp And Ran A 11.23. Let Me Find It And Ill Link It.