11's NA...all day long

[pharmd]

What's it gonna take to go consistent 11's on an N/A SS with little to no weight reduction, AWD, stock tires on pump gas. What size motor, heads, cam, intake...I'm interested in this goal so I'm looking for ideas.

For kicks lets say this is with an average 2000DA.

[NORCAL SS]

480 CUBIC INCH LSX block, l92 heads and a fast intake should do the trick.

[zirotti]

Easy. Just tell people you 1/8 mi times are you 1/4 mi times. You will REALLY impress people then.

[Nightmare]

Easy. Just tell people you 1/8 mi times are you 1/4 mi times. You will REALLY impress people then.

haha...I second that one...

Buy a z06!

[lt1z]

It can be done pretty easily. I would use an LSX block with 427 or more cubes. A 24X/25X .6XX/.6XX cam, L92/LS3 heads, L92 intake (for torque), 1 7/8" long tubes and either install the proper gears for using 20s or just drop down to 17's like the drag guys do and run the stock 4.10s. Of course a fully built 4L70E or other built trans would be necessary too, with a 3600+ converter.

Norcal went 11.9@112 ( Iknow his is blown but I'm just using his as an example of how much power it will take to get to high 11s)

112 mph trap speed with 4800 lb race weight takes about 550 hp to the wheels

Now it's pretty easy to build a LS 427 that will make 550 rwhp or more and you will be able to do it with about the same weight given that the LSX block will cancel out the extra weight that the maggie adds in his situation.

A 454ci LSX with 550-580 rwhp could be very streetable and run high to mid 11's all day in a TBSS. Of course that same motor would run 10.50s at almost 130 in a stock weight F-body.



Now cost wise.... the maggie would be cheaper to do by about $8K, but the reliability and coolness factor on the N/A LSX setup would far outweigh the cost difference IMO and could be run on pump gas as long as you kept compression below 11.5:1. Then you could always add nitrous to get down lower if you wanted. :2cents:

[JBrown]

It can be done pretty easily. I would use an LSX block with 427 or more cubes. A 24X/25X .6XX/.6XX cam, L92/LS3 heads, L92 intake (for torque), 1 7/8" long tubes and either install the proper gears for using 20s or just drop down to 17's like the drag guys do and run the stock 4.10s. Of course a fully built 4L70E or other built trans would be necessary too, with a 3600+ converter.

Norcal went 11.9@112 ( Iknow his is blown but I'm just using his as an example of how much power it will take to get to high 11s)

112 mph trap speed with 4800 lb race weight takes about 550 hp to the wheels

Now it's pretty easy to build a LS 427 that will make 550 rwhp or more and you will be able to do it with about the same weight given that the LSX block will cancel out the extra weight that the maggie adds in his situation.

A 454ci LSX with 550-580 rwhp could be very streetable and run high to mid 11's all day in a TBSS. Of course that same motor would run 10.50s at almost 130 in a stock weight F-body.



Now cost wise.... the maggie would be cheaper to do by about $8K, but the reliability and coolness factor on the N/A LSX setup would far outweigh the cost difference IMO and could be run on pump gas as long as you kept compression below 11.5:1. Then you could always add nitrous to get down lower if you wanted. :2cents:

Andy's truck should be at or very,very close to 11's...

and thats with a streetable cam that has NO lope at all... trust me i have seen/ heard his truck numerous times

All he really had was a lingy 427...

[PEDRO]

Andy's truck should be at or very,very close to 11's...

and thats with a streetable cam that has NO lope at all... trust me i have seen/ heard his truck numerous times

All he really had was a lingy 427...


his OLD truck wouldnt have done 11's......

[Hyde]

You need around 485 to the tire...We will see here shortly!..We are working on a heads cam set-up for a stock short block to get a 2wd in the 11's on motor. We will be dynoing on Saturday...

[JBrown]

his OLD truck wouldnt have done 11's......

With the other cam, yes it would have...

[MyGoatBites]

Hmmm.....It takes around 475-500 to the tires with a coverter and dead hooking. Otherwise, it takes significantly more. I would guess a 400+ cube motor with HUGE heads and the right cam could run 11's on motor. I don't think a stock cube motor is capable. I know Hyde is going for it, but it is a tall order. Of he dead nails it with the heads/cam package it might sneal into the 11's

[Hyde]

Well B, I hope we just have a good time with it...If we can make the power...If it runs the MPH I will be happy..Then the owner will have to do other things to make it hook...lol

[broken98]

usually take what ever you run now. and add 100 horse for every second faster. or 100 pounds lighter equals .10 faster so do the math. my imo it can be done w/ stock displacement and a good power adder of some kind . just make the power how ever it may be and put it down.

[BBA]

Go pick up a used 8.1 liter RV engine (iron version of lsx motor) and put forged pistons with 11:1 CR and get a nice a cam for it. You don't care about the extra hundred pounds or so weight with AWD.

This is doing it on the cheap.

[BBA]

Here is one with 1300 miles:

http://cgi.ebay.com/ebaymotors/2006-8-1-LITER-ENGINE-LOW-MILES_W0QQitemZ150177357408QQihZ005QQcategoryZ3361 5QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

[BBA]

Oh heck, here's one with ehaders already on it: http://cgi.ebay.com/ebaymotors/8-1-LITER-ENGINE-MOTOR-CHEVY-GMC-CHEVROLET-SIERRA-TRUCK_W0QQitemZ190161642568QQihZ009QQcategoryZ3361 5QQrdZ1QQssPageNameZWD1VQQcmdZViewItem

[MyGoatBites]

If I was going to try to run consistent 11's I would build a L92 based 416 4.065 bore x 4.00 stroke. L92 CNC heads along with a high 230's cam set on a 114 LSA and you have a 600+ horse motor with around 650+ torque. It would land you a little shy of 500 at the tires with 500+ torque. It would be a true street monster in a AWD truck

I am pretty sure that beast wouldnt have trouble running 11's

About $12000 - $15000 installed should get it handled for yah

I can get started on a motor for yah. Send me a check :)

[freemaSSon]

his OLD truck wouldnt have done 11's......
did you race it.....cause I DID and i can say it would run summer time 11's PERIOD.....it kicked the dog shit out of mine....and he gave me the hit...plan and simple GAVE ME A FULL OUT HOLE SHOT ADVANTAGE and it had a 1 truck length by the end of 1st and just DROVE OFF.....i mean O. F. F........ DROVE OFF.....

that is why i was tryin to saw off my left nut to get it and put about a 300 shot on it.....and kill anyone....

[MyGoatBites]

I would say Andy's old truck certainly had the potiential to run deep into the 11's. He likes to put those little cams in everything, he probably could have made a bunch more power and it would have ran even harder. Anything 400+ cubes is pretty wicked. Screw the horsepower number.....400 cubes buys you a BUNCH more torque

[freemaSSon]

keep in mind it was still the STOCK converter in it....put that 3600 VIG 5-disc in there and you can take off another 5 tenths.....i would venture to say winter 0 DA 10's with the converter......

[JBrown]

keep in mind it was still the STOCK converter in it....put that 3600 VIG 5-disc in there and you can take off another 5 tenths.....i would venture to say winter 0 DA 10's with the converter......

I forgot to mention this also... His truck made all that power from the VERY start of the powerband, it was a literal monster...

[BBA]

If I was going to try to run consistent 11's I would build a L92 based 416 4.065 bore x 4.00 stroke. L92 CNC heads along with a high 230's cam set on a 114 LSA and you have a 600+ horse motor with around 650+ torque. It would land you a little shy of 500 at the tires with 500+ torque. It would be a true street monster in a AWD truck

I am pretty sure that beast wouldnt have trouble running 11's

About $12000 - $15000 installed should get it handled for yah

I can get started on a motor for yah. Send me a check :)

Yeah...but considering you can find low mileage 496ci 8.1L motors for less than a grand...you can do it with a cam, pistons, big injectors and tune for probably less than $3000 complete (if you do the work yourself). If you get one from a 4WD Avalanche, you still can run the factory front differential without swapping oil pans.

...And you won't need a high stall converter either (meaning the speedo will still work properly.)

[NORCAL SS]

Question does that 496 fit in the tbss?? I was thinking about doing a sroker kit 496 (prob 550-560 ci in) running ported heads and then magnacharger 2300 with 15 psi boost. Im sure pump gas 1000 hp easy.

[MyGoatBites]

That is way overkill. If you are going that route throw a TVS on top of a 434 LSX motor with some wicked L92 heads, teh new lower manifold, and a little alcohol injection and you can easily make 1000+ and do it on pump gas. With the TVS you aren't going to need a huge motor to get the power out of it. 15PSI on anything over 400 cubes with a TVS is going to be in the 1000+ neighborhood with some good heads and the right cam.

[BBA]

Question does that 496 fit in the tbss?? I was thinking about doing a sroker kit 496 (prob 550-560 ci in) running ported heads and then magnacharger 2300 with 15 psi boost. Im sure pump gas 1000 hp easy.

From looking at my neighbor's RV, it's the same as an LS block...just more cubes.

Besides, the OP asked about how to do it NA, meaning no SC/Turbo. This is the cheapest way to do it... barr none.

[BBA]

That is way overkill. If you are going that route throw a TVS on top of a 434 LSX motor with some wicked L92 heads, teh new lower manifold, and a little alcohol injection and you can easily make 1000+ and do it on pump gas. With the TVS you aren't going to need a huge motor to get the power out of it. 15PSI on anything over 400 cubes with a TVS is going to be in the 1000+ neighborhood with some good heads and the right cam.


See, I would say, in all practical terms, any high dollar LSx motor would be way overkill just to get 11's. Not to mention you need a top notch machine shop to machine/build the LSx because it comes with no machining at all.

Sure, you would give up the aluminum block but hell, a cam and it's ready to go, 650-850 HP just by changing pistons, installing a cam and swapping the motor, all of which has to be done with an LSx just to get started.

Hey...I mean after all, there's no replacement for cubic displacement, especially when it's cheap.

[pharmd]

well how bout the flip side to that, what's the recipe to run mid-11's (summer) the cheapest way, yet maintaining daily drivable drivability/dependability. One stipulation: NO NITROUS. I'm gonna bet a stock block with TVS is probably gonna be more cost effective vs a built stroker. Any thoughts?

[MyGoatBites]

TVS + stock bottom end = KABOOM

You could do a forged bottom end $(4000 w R&R)
112 Maggie ($7000 installed as part of your build)
Might as well throw a cam in it since it is apart $1000 w springs
and run well into the 11's and drive it anywhere

It is still $12000 plus $3000+ more for a trans

11's is $12000 to $15000 anyway you slice it if you dont run nitrous. If you do run nitrous it will be $12000 to $15000 the first issue you have......because you will be buying a whole new motor on your first moderate mistake

[freemaSSon]

andy's motor was valve springs to crank, sleeved LS2 427c.i. with AFR 225's CUSTOM freaked all by LPE and the equivilent setup can be had for around 12G's today from LPE.....

Built tranny MAXED $2500, stall converter $1000....the labor to marry it all up plus injectors and 17/8 headers and all say 18-20G's depends on how friendly your vendor/installer is if you bought and installed at once.....

11's N/A damn near anywhere at any time.....i would say 11's all the way to 4000+ DA after that not so much......

[MyGoatBites]

Yah 12k to 15k for the motor and install. That is IF you already had all the other bolt on stuff. Otherwise add $2500 for exhaust, $1000 for efans and an intake, $500 for injectors, and the list goes on and on and on

[BBA]

So...no one wants to go the big block route for cheap huh?

I guess if I ever come across a used avalanche 8.1 I'll buy it for chicken scratch and make an 11 second low budget TBSS that will idle smooth and get good mileage.

[freemaSSon]

So...no one wants to go the big block route for cheap huh?

I guess if I ever come across a used avalanche 8.1 I'll buy it for chicken scratch and make an 11 second low budget TBSS that will idle smooth and get good mileage.
if the exterior dimensions of the engine are the same as all other LS GEN. motors then the swap is a snap......custom grind a cam and be done with it....oh then the tranny is about all it would take.....

i say camed real nicely that displacement should do around 700ish at the wheel TQ.....AWESOME.....do it....