ncnumber8

iTrader: (1)

O-rings won't keep the head from lifting imo. The bolts are stretching under extreme cylinder pressures, and the LSX block addresses this problem by adding an additional bolt for each cylinder. Thats really all that can be done, practically...

ncnumber8

iTrader: (1)

I'd go ahead and spend that extra 2 grand or so for the LSX block. You'll probably save that money in parts later if your really running a big shot like 250 or greater. pay now or pay later, its your choice..

1_bad_TA

iTrader: (6)

Iron block 408 with low compression and two stages of spray

dnkynrbk

iTrader: (34)

I would like to have a pm on those heads too getting ready to build a new motor too. So what company out there make a decsent short block for the price to spray a 300 shot. CAST IRON

streetvet

9sec or faster & bang for the buck , LSX blocks are only 2000$. Last alot longer & 6bolt heads. If money is no problemo then ,Alum-warhawk block & 6bolt head. IMO

Beaflag VonRathburg

iTrader: (176)

+1

He's only planning on running 9s though. He already went 10.36 @129.99 on a 100 shot. A 402 with that or maybe a little more would go really close to 9.9x.






Care to share the details about that setup? I have similar aspirations as you can see from the above pictures.

TARZAN

iTrader: (12)

Where's the iron 346 option? I feel left out....


-Will

Beaflag VonRathburg

iTrader: (176)

That is the cheapest option of the bunch.

TARZAN

iTrader: (12)

Thats what I've got, 5.3 block, stock cube, with good internals....hoping to have it up and running over Christmas, so we'll see how viable an option it is

-Will

streetvet

Is it 6bolt heads? can it hold 2000+hp??

Lsx block does and can.

Beaflag VonRathburg

iTrader: (176)

I didn't say it was the best. I said it was the cheapest. You are comparing a $2000 block to a $200 block.

streetvet

IMO - i think he will grow into lsx block. The worst thing i've seen , when you spray is the HEADS lifting. unless you do something DUMB. Thats why i say the LSXblock. I know it cost more , but it will last 10 times longer. IMO. You get what you pay for.

The 346 iron block, iagree with you. Depends how much power you want.OR gonna want.

Nos Power

98Z28CobraKiller

iTrader: (17)

I took the LS2 402. The weight savings trumps the cubes savings. The heads will lift before the block breaks. Aluminum is plenty strong. And then if you happen to hurt a piston, due to being a cheap bastard and spraying a big wet shot without a dedicated fuel cell, then you can open it up to a 408 and get the best of both worlds.

98Z28CobraKiller

iTrader: (17)

Why low compression? Spray loves compression.

dnkynrbk

iTrader: (34)

Im just thinking of a budget motor that would produce High 9s. I know I will probally shoot myself in the foot with not going to the lsx block but hell I can always sale this motor lol.

GueSS Who

382 stock 98 block
Eagle crank and rods
Diamond pistons (11.0:1CR)
CNC ported 98 heads with stock rockers
RPM 6 hydrolic roller cam with double roller
LS6 intake with ported TB and 60lb injectors
2 dry kits with little to no pills. LOL
TH400 with PI 3500 stall
12 bolt with 4.10 gears
2950lb raceweight
Stock panhard bar
stock torque arm
stock rear swaybar
adjustable lower control arms to center the 28in drag radial
Click here to see Video

Qwiknotch

I have an aluminum block LS2. 4 inch bore, 4 inch stroke ,out of the box Dart 225's and an out of the box Victor Jr manifold.
with 11:1 compression it made 586 hp on the motor and with a 150 shot, it made 798hp.

Beaflag VonRathburg

iTrader: (176)

Thanks, I've been trying to plan something very similar out for my camaro. Except it's going to be stock displacement. I just picked up a rebuildable short block with blow by for $200. I've got the above $250 heads that I need to get a little more work into cleaning them up and such.

I'm guessing that's flywheel.

Qwiknotch

Yes, that is on an engine dyno, not chassis.

I should be putting the engine in the car in the next few months.