dnkynrbk

iTrader: (34)

I was thinking of building a 9 sec na combo and didnt know what to go with a 427 lsx block or build a ls3 427 or do a 440. Was thinking of using a big hyd cam to save money istead of a solid roller. Car weighs 3400 with a t400 w/brake. I can still shave some weight off it lol. Wanted anyones opinon I did a search and really couldnt find much.

caMnaro

iTrader: (24)

https://ls1tech.com/forums/drag-raci...as-record.html

LT1Formula007

iTrader: (66)

I looked into the same thing just a few months ago. I had alot of responses from a couple of different sponsors and other people here. IMO, I seen alot of guys were say that a 427 LS3 is great for NA (and cheapest) over the LS7 block which is like 1300-1700 more -for just the block. Also I got alot of responses of people saying that a 427 with TFS 235's and a good size Hydraulic cam with the correct setup and a weight of about 3300lbs will get you into the 9's NA if your car leaves good.
With that said, Thats the route I may go with if I ever sell my 403 LS2 Stroker.
Also another option that you may want to look into is an ERL Prepped LS2 Block with Darton Sleeves and 427 cid with a set of TFS 235/245 heads and then go with a BIG cam. That alone, will produce enough power with 11.1:1 compression to propel a 3300lb car into the high 9's. And if the car really works, Maybe mid 9's. Although there are alot more things you have to address, but a 427 will get you into the 9's NA...

Here is the link to my thread... It has some useful Info in it I think!
https://ls1tech.com/forums/generatio...ease-help.html

Also... A link to a thread with a couple little Videos I just saw.
https://ls1tech.com/forums/drag-raci...d-mistake.html

Good luck man! And i think I met you and talked to you at the LSx Shootout if that was you? I was talking to someone in the pits with a car just like yours, and I believe you had your girl with you. You were running nitrous at the time, if I can remember correctly??

-James

melsie68

iTrader: (8)

I would say either combination is capable at that weight. My car weighed about 3200 lbs and was running 10.100s at 133.40-133.60mph in the quarter. My car did not leave very well though 1.455 60'. The mph it was running should have been 9.90s and that was only 404cid. Mine was th400 on footbrake. I would say any of the mentioned combos with a hydraulic camshaft will put you well into the 9sec range provided you can hook it up. Just go with the cheapest one.

venom ws7

iTrader: (13)

Since you want N/A then don't go LSX (Weight) and LS7 Cost atleast $1000 more
I think 427ci LS3 will work great high compression a good H/C/I and 3300lbs will get you there

dnkynrbk

iTrader: (34)

Hey thanks yeah that was me with my chick. We will be at lsx again this year esp. since its closer to my house. It was nice talking to you thanks. What route did you end up going with.

LSWNDR

Are most of you guys running deep into the 9's using a single plane set-up with a huge hydralic roller camshaft?

LT1Formula007

iTrader: (66)

Cool, I'll see you out there again this year!
Yeah I thought that was you! I ended up just throwing the car all together b/c I fell short on funds, and I've been going NA since last year! I have been REALLY Juggling the N2O idea lately!
My current setup is...

LS2 403 CI Stroker (11.5:1) w/ STOCK LS6 Heads -other than PRC Dbl. Springs
248/254 .615"/.623" 110 LSA Cam
Fast 92-92 (Going to a 102/102 setup this season)
Level 4 4L60E w/ Yank SS4000 Converter
10 Bolt with 3.42's (Going to a MWC Fab 9 w/3.70's or 3.89's)
Had PS 1 3/4" LT's (Just ordered 1 7/8" LT's)
I also just installed a UMI K-Member. But I still need the A-Arms and Some D/A Front Strange Struts...
I plan on relocating the battery, doing a dual walbro fuel pump kit, And a little weight deleting...
I have gone 10.993 at 125.61 mph with a LAZY 1.659 60' so far. I was leaving easy. The suspension really needs some work. It launches HARD to the right rear. (Leaves Twisted as hell)
I launch the car just off idle, roll into it, and floor it at about 20-25mph. So it has some left in it still. At 1800+ rpm launches...It BLOWS the tires off! I launched at 2200 rpm (footbraked) and it was terrible. 11.83 at 122 mph and I lifted twice b/c it was wheel hopping the 10 bolt.

Well good Luck with your 9 second NA build man. I am looking into the same thing and after I get all the other stuff worked out with the car this year, Thats what I'm putting in there. I'm probably going to go with the ERL LS2 Dry Sleeved Shortblock and have it sent off to HKE for the top end to be assembled. Or I may just have HKE do my whole build and see what he says.

Here is a build thread of my car. From a Complete POS to a POS in Sheeps Clothing, LOL!
https://ls1tech.com/forums/chevrolet...der-knife.html
Or visit my F-Quick page at...
www.fquick.com/LT1Formula007

Zmg00camaross

iTrader: (11)

dnkynrbk

iTrader: (34)

When you get the torque arm and 9 inch that is where you are going to see your best times. I have a stock k member stock a arms and im pulling a 1.30 60ft with a 5200 n20 stall and t400 lol. Also running a 28inch slick 15x10.
What wheel and tire set up are you running.?

LT1Formula007

iTrader: (66)

I'm Not to ***** up your thread, (I can pm you if you'd like) lmk!
But I am going to be running a set of Pro Stars with 295/55/15 (28") MT Drag Radials out Back and some Skinny's up front!
*Right now I have the 27x10.5x15 MT ET Streets (Bias Ply's) I'm gonna try these, and If I have to...The 28" tires will be going on if these don't work out for me!
I am going to place an order tomorrow with Eric at MWC for my Fab 9.
I can't wait to get this car to work finally. I'm getting the Fab 9 with a detroit Locker, 35 spline axles, 3.70 gears, Back Braced, Aluminum center and pro-pinnion support, the Short tq. arm with a DS Loop, Powder coated black, Stock Length (to keep it as sleeper on the street as I can with the BIG Cam. haha) and a drag bar also. I'm not going with ABS, Since I'm in the process of removing all that junk right now! I'm hoping to hit the track by Early July. We'll see what happens.

I have been contemplating the TH400 and the Nitrous route for the last year, We'll see what happens. I keep telling myself If I break the Transmission again this season I'm going to a TH400 and saying Fu(k it!
And I want to see High 9's this year, SO I may end up with a small shot by the end of the season.

racer7088

I am doing some but the ones we already did running 9.3Xs-9.8Xs are running FAST92 etc.

We are doing some now that will go under the 9.3Xs and are higher revving big hydraulic deals that should go about 7500-8000 rpm or so depending on parts.

Bigger is easier and rpm is harder and both are faster.

racer7088

We are going to start selling higher rpm hydraulic roller valvetrain systems that allow a whole new high level of power where everything is engineered together to make a legit 7500+ rpm hydraulic roller deal live and prosper. We've already done it quite a bit but this will be the whole deal in a package so that it is mostly bolt-on so to speak and more easily sold to the end user.

The problem is that it is never cheaper of course to do stuff right but it isn't always way more expensive either and is certainly not any more expensive if you haven't already bought the parts in the first place either. I'd say that over a normally setup heads and cam deal that to do it the right way for a 7500+ rpm deal is about 1000.00 dollars more expensive but that might make you an extra 75-100 hp on a big engine deal with a good manifold.