If your making 320 in denver than you already over 400rwhp. My bud's LS1 with a cam and exhuast made 317 uncorrected and 400 corrected. I'm willing to bet that your numbers are corrected for sea-level and not the altitude your at. A stock LT1 here dyno's just over 200 to 220rwhp and the LS1's seem to be right around 250 to 260rwhp.

A bolt on LT1 making 320 at 5,600 feet. BS, that's what a dodge viper makes here. You got a V10 under the hood??? I don't mean to pound on you, but what your saying just doesn't make any sence. Good luck to you and I wish you the best in making history with the LT1.

 

442 rwhp @ 7500 rpm on a mustang dyno, on a 28X10 slick thur a th350 with a 5600 stall, with a 9in and 4.56 gears

 

Mustang dyno's register lower numbers than Dynojet.

Slicks reduce rwhp.

5600 converters drastically reduce rwhp.

4.56 gears reduce rwhp.

You have everything stacked against you to make big rwhp numbers. But, your ET speaks for itself.

We're not racing dyno's, are we?

Mike

 

I'v never been a really big fan of dynos, my feeling is there are good for showing where peak power is. As I can tune a car much better at the track then on the dyno.

 

lmmfao!!! this is slaying me! i had to stop oafter the first page and the first couple of replies on the second! g'luck in your venture! as someone else put it..... you are in for a rude awakening! nice to see you are taking a great deal of interest in the build up, there definitely is alot to learn.

p.s. i sold my bottle opener, thanks for the bump on the posts, lol!

 

You probably already know this Steve, but for everybody else out there, the Mustang Dyno is an awesome tuning devise because it is a true Eddy Current based dyno. You can actually plug in the vehicles weight, and do a full 1/4 mile blast from a dead stop. The dyno will load the wheels almost exactly the same as it would be going down the track. So you can do some extremely accurate tuning on a Mustang dyno... Along with many other cool features. The Dynojet is what's called an "inertia" based dyno... The faster it spins the rollers, the more power it prints... They have what is called something like the dynatrac system where you can use a big train brake type setup to hold a load on the rollers, but since it's inertia based, it cannot measure hp in this mode, thus making tuning for power impossible, because you simply don't know if what you are doing is helping or hurting. The Eddy currents measure torque and calculate hp exactly the same way all engine dyno's work. So basically a Mustang dyno is a REAL dyno, and a Dynojet is more like a toy. Funny thing, Dynojet is in the process of developing an Eddy Current based dyno Something Mustang has been doing for... well, years? lol

Sorry for the dyno lecture, just felt it was a topic not often discussed, and very often filled with confusion as to why the numbers are different between the 2 dyno's...

Later
Chuck
HPE--- Mustang Dyno owner
Houston, TX

 

joe overton makes some serious power NA, traps 138mph or so.
what kinda heads does he have?
and only 388ci.
how much rwhp does he make?
check out this thread drewhms97ss


http://web.camaross.com/forums/showt...ht=joe+overton

lots of good NA info there

jesse

 

I only read the first 2 pages but heres my input on a 660rwhp NA LT1.

Me and my buddies race 2 dirt track sprint cars. The first is a 360CID with 23* heads that flow 340cfm, a 268 solid roller cam and 14:1 CR on alchohol. It made ~650hp on an engine dyno.

The other is a 410CID car that we race against the outlaws. It has 12* heads with 287cc runners that flow a little under 400cfm, similar cam and CR and a Kinsler fuel injection system. Basically 8 66mm throttle plates. It made 850hp on an engine dyno, which is about how much you are going to need to make to get 660rwhp NA.

Goodluck

Waz.

 

I might go solid roller. we are still waiting for results on the heads.

 

Sorry to resurrect this thread, but I happened onto this, which was accomplished about 15 minutes from my house. Funny how I have to look on the Internet to find these thing. . .

http://www.ls1tech.com/forums/showth...3&page=1&pp=20

Summary:

LS1, Naturally Aspirated
414 cid
14.2/1 compression (not even close to pump gas)
274/278 at 0.050 solid roller with .785"/.776" lift
Custom $2000 headers 2" -> 2.125" step-up primaries

Mustang Dyno:
612 rwhp
552 rwftlb

As the builder, Allan, said, "it is intended for race only. RADICAL idle(no vacuum) and dosen't clean up till around 3500 RPM."

Mike

 

interesting

 

Which part did you find interesting?

A. 31 more cubic inches than your 383
B. High compression
C. Race gas
D. Race ported LS6 heads in the 350-360 cfm range, if not more
E. Huge solid roller cam
F. Crappy idle
G. No engine vacuum to speak of
H. The fact that we all told you it would require A thru E, resulting in F & G
I. Definitely NOT the type of engine some "old guy" has built to cruise around town and give joyrides to easily impressionable people such as yourself...
J. All of the above

Once again, it's possible, but it's not going to be very (if at all) streetable, and it's definitely not going to be cheap.

 

wow...after reading all 7 pages i have nothing bad to say!

just one question...how much money are you going to spend on this project. 2k...5k...10k...20k?

ask him for a rough estimate and let us know and then we can probably tell you what your car will ACTUALLY make, or close to it.

and maybe get some names of some of the components that are going into it and we will tell you if you are getting srcewed.

 

Im paying him ~7k. Already have LT4 heads/intake, 58mm TB, lifters, RR, guide plates, and a few other things. Im droping a 12 bolt on top of this. anyways, the 7k is for his work, the rotating ***, the machine work on the block and heads, and pulling the motor / reinstalling the motor / new EX and painting the engine well black.

I have since meeting him started working for him; he knows his ****. We will see what he can do for the car. but im getting all kinds of **** for free. IE we are going to be doing a full undercarige coating, and getting the car painted for nothing. I guess you could consider my work payment for the paint. Ive seen 2 cars he has done and WOW would be an understantment.

 

MMMM..I am not doubting the 660rwhp anymore. Undercoating and a black engine mean serious HP. Hope you still arent hopeful for the number, you can be hopeful for the feel, and im sure you will get that, but you cant argue with money. Jimlab is up to over $30k I believe, if not, hes close. You are paying $7000 for labor and parts, that leaves about $4500 for parts, which leaves you nothing better than the basics (eagle/scat, SRP). Not saying they arent good products, but not up to the task of a 660rwhp monster.

I was just bored, I know this post should lay dead until the motor is finished, but i felt like typing