71_firebird

I put a 2001 LS1 with TSP 2.5 and M3 cam in a 230" dragster. Works really well but is a little slower then I had hoped for. Our summer air here is around 7500', the best et was 8.95 but sits around 9.10's most the time.

I'm thinking about pulling that engine this winter and putting it in a Javelin and I would like to stay with an LS1 for a replacement. What year and model of LSx would be the best choice (I would like to stay with all aluminum if possble) for a maximum effort setup and what heads, cam etc. would put the dragster in the low 8's? I know very little about LSx's so any help will be appreciated. No nitrous but a blower will be considered.

Lee

JL ws-6

iTrader: (50)

If you nad the dragster running that fast with nothing more then a n/c setup, the easiest way would be a bigger CI setup.

An ls7block with a 427 or 441 setup, a good set of et, trickflow, or afr heads, and a big hydrailuc cam would easily get you another 150 hp more then what you were running, bump the compression up (I assume race fuel is o.k.) to 13.5 to 1 and you should have no problems. Or, ported ls7 heads, or the ET ls7 casting would also work great.

With a car like that, to get it a second faster is not that big a deal, you were at 9.1 with probably 425 rwhp, a motor like I described should be able to make 550 rw, that kind of a power gain in a car as light as a rail, with the hook that those cars have should get you really really close, and if that's not enough a 100 shot of nitrous would certainly do it.

A 150 shot on the motor you're running now may also be enough as it is to do it.

WSsick

iTrader: (13)

zz572 for the win! lol. jk, that big ol' thing isnt what you are looking for. get a max effort cam with some great heads. call a sponsor for your exact setup, theyll help out alot. and nitrous wont hurt the motor if you dont over shoot the damn thing. 100-150 shot and youre on the safe side.

JRracing

iTrader: (35)

Guys, he said NO n2o....


I think a set of low cr heads and a blower cam would be a cheap set up, then ad a big ati F1R or F2R, that should put you in the low 8's I would think...

JL ws-6

iTrader: (50)

It's not gonna take an f1r to put a 1800 lb car in the 8's This guy's got 1/2 the weight of the average f body.

I just ran some #'s on teh calculator, if the thing weigh's 1800 which I assume it does like all rail cars do, it was making about 460 rw the way it was, according to the calculator it's only gonna take about 650 to get it where he wants to be.

You can build a big n/a motor that will make another 200 hp that's absolutely no problem, nitrous would be the easiest way to do it, if there's a rule against it then it's easy, a big CI n/a motor, a 427 to 441 ci ls7 motor would have no problem making that kind of power. Hell there's guys with C6 z06's with ust a cam making over 550 to the tires, so if you build a whole motor, bump the compression up for race fuel, to make another 100 hp isn't a stretch.

tektrans

iTrader: (23)

I ran 9.6 at 3200lbs with my N/a motor. Oh man if I weighed 1800lbs!!

JL ws-6

iTrader: (50)

That's what I mean, if you can get to 9.6 in what a 3200 to 3000 lb car, a car that weigh's 1200 less should have no problem going what he's looking to get to.

And you didn't do a solid roller sheet metal intake motor either, do something like that and you probably could make another 75 hp, making the goal even easier.

71_firebird

Thanks for all the input.

But, I guess what I was really after is what junk yard engine should I find and build that will get me where I want to be. If I put the existing one in the Javelin then I will be starting over and will have a second chance at getting it right. Also keep in mind that getting a vetter or escalade engine would be very difficult so send me the right direction with one that's readily available!

Lee

Gimp98TNT

iTrader: (21)

I would look for a LS2 from a GTO, vette, CTS-V etc. add a nice set of heads like 225cc trickflows and a matched cam, and a fast92/92 should put you where you want to be.

Of course a LS3 would be far better but you'll have trouble finding one at a junkyard.

JL ws-6

iTrader: (50)

Ls2 you can do a stroker 4.1 crank and with the 4 inch bore It will be a 418 or whatever.. that's not a bad way to start.

But, if you are starting a whole new motor, I would suggest just doing it with all new parts. The junkyard motor is only gonna have so much that you are gonna use on it, the rest you probably can sell piece by piece, but the trouble of it is a pita. Plus you're talking about trying to find one, then there's the risk of the thing being no good.

Wnts2Go10O

iTrader: (12)

spin an LS7 up. ported ETP LS7 heads, a worth while sheet metal intake, max effort cam, Jesel valvetrain, bam, botom 8's on the motor.

LSxChevelle

iTrader: (4)

So any new info on this car? My cousin runs the Lucas Oil S/C car and we were talking about LS motors. Seems they still are rare out there. I would think a 408 built to spin to say 7500 with some very nice heads, .650" cam, super Vic, and either a carb or Ron's injection on alcohol would be great.

fergymoto

iTrader: (129)

Just curious on why you want to stay with the LS? A big block would be a lot cheaper.

SSPerformance

iTrader: (76)

**** buy my 440 and put it in there that bitch would fly

ssdeuce74

iTrader: (2)

big heads big solid roller, i know a bunch of 1st gen sbc dragsters running 8.00-.20. either 350ci and spin her our 400+ci and use the torque but combo is everything when you want to go that fast, off the self parts are dang near useless.