Detroitmuscle

iTrader: (16)

I'm somewhat new to LS1 TECH and I, of course, want to achieve more power from my car (in sig). I was wondering what type of heads/cam setup ect. I would need to go with and what other mods I would need to make around 500hp at the wheels on stock bottom end with no power adders.

Boostaholic

iTrader: (4)

What kind of drivability do you want?

I had a TREX cam with stock ported heads on a 408 with mid length headers and it made some damn good power, never got it to the dyno though. Only down side to a big cam like TREX is you would need a different torque converter.

jrp

iTrader: (16)

not gonna happen no way no how, period. and i'll tell you why:

automatic.

you'll need cubes, and lots of them.

Stone0fFire

500hp?

what is that in rwhp?
low to mid 400's?
isnt it possibile with heads and cam and
EVERY SINGLE BOLT ON EVER MADE?

Red99TA

iTrader: (11)

He said he wants 500 at the wheels on the stock bottom end w/o power adders...I'm w/ JRP...not gonna happen.

black_knight

iTrader: (1)

I'm with JRP. You'll need at least 402 cubes to do this... at least 427 to be safe. (That is, if you meant 500 rear wheel hp)

SSean

Mods in sig, got me pretty damn close

Race Car Driver

That's asking a lot from a stock bottom end, but a set of AFR 205 milled for 11.5:1 c/r and big cam around 250/650/112 might come close. Call wheel to wheel, thunder, FMS, APE or they will tell you for sure.

jrp

iTrader: (16)

in a 4k+ stalled auto?

MUSTANGEATER

iTrader: (10)

It's doable, but it's not going to last very long. Not going to be a 100% stock bottom end, flycuts/rodbolts, gonna need to be a solid roller also. If you get enough compression and can cut enough of the piston and don't mind really spinning it. I'd say its falls into the realm of possibility.

prostock_bigblock

iTrader: (11)

I wish u a good luck man in acheiving your goal , but I am sorry to tell u that is extreamly difficult ....NO WAY ...in short words . It is a good thing that u have a dream , but u should be reasnobale 500 hp N/A , If you r right u would see many N/A 450+ hp , and I well be the first guy to do that . If you r correct , the need of a larger displacement wont be needed and the ls1 will be named as the rocket engine . I wish u reach what u want , but before that , do some research , modify yor knowledge , and I am sure that few mods will put a big smile on your face ... "LS1"

jrp

iTrader: (16)

i forgot about SR's, even at that didnt whats his face with the FMS SR 346 do ~480rwhp through a 4l60e or another automatic tranny? he had a forged bottom end and ~13.5 CR if i recalll.

prostock_bigblock

iTrader: (11)

In addition , remmember you`v got an LS1 ====> budget talks

Ben R

Lee's car had a TH-400, a huge stall, and slicks on when it dynoed that number.

To do that with a stock bottom-end would be an accomplishment. It would get much easier if you re-built the engine with good pieces. A solid-roller valvetrain would make it even more do-able, given that the solid-roller valvetrain is setup properly.

MUSTANGEATER

iTrader: (10)

I agree it's hard but not outside the realm of possibility. 13.5:1 and stock bottom isn't too far fetched anymore with 55 CC Chamber All Pro's coming out. Looking from those chambers alone and I think that's going to be worth some power. Don't forget the ole vaccuum pump, and a few more tricks nobody seems to do on these LS1's.


God I need to get my **** done

jrp

iTrader: (16)

KCB - thats it, Lee


nothing is out of the realm of possibility but its not even worth attempting somthing like that with a stock bottom end. a 383 or 402 would provide a much broader hp and tq while not having to spin the **** out of just to hit 500rwhp. add the fact that it'll be a race gas only setup and pretty much regulated to the track only.

i finally fired my **** up on friday. im working on tuning gremlens now.

MUSTANGEATER

iTrader: (10)

I admit, it'd be a waste unless that's the absolute goal. Good luck on the new setup, I'm sure it's be a fun time about to get more fun

prostock_bigblock

iTrader: (11)

yup I agree with u

Detroitmuscle

iTrader: (16)

Thanks for all of the responses guys.
I was actually looking to see if it was possible as well, so I guess that question is out of the way. I now realize that to make big numbers in that range I'm gonna need lots of work. On the other hand since 500 on stock block is far from possible i would also like some suggestions for a good heads/cam that will bring me to the most power I can achieve with really good driveability. My car is currently a summer DD and I can drive it less but i'd rather have it be reliable enough to drive daily during the summer months.

TAQuickness

iTrader: (28)

anything is possible so long as you have the budget - case in point, NASA made an ink pen that works in zero gravity when all they needed was a pencil.

I have no idea how you'd go about making 500rwhp on a stock bottom end, but I would say start by researching what everyone has done to date, then think out side the box. All you need to do is come up with the right combo no-one else has thought of yet