This guy claims these few mods will make 520 hp on a 89 firebird 350.. here is the mods...Intake:

Holley stealth ram, port matched, extrude hone ported, rounded plenum, and intake entries, stock throttle body with tpis airfoil.

Valvetrain:

Compcams hardened pushrods, roller lifters, 1.6 pro-magnum roller rockers for 7/16" stud.
Cam Hyd roller cam: grind CS XR276HR-12
Part number: -8-503-8
Power band from 1800-6000rpm
SDPC: True double roller timing chain

Heads: Edelbrock Victor-Jr, will be milled for 10.25:1 compression.

Moroso 6 qt oil pan, blueprinted stock volume oil pump, canton racing windage tray.

Exhaust:

Hooker Super Competition Long Tubes with 3" custom x-pipe within first foot after collector, dynomax bullet mufflers dumps.

MSD wires, coil bosch plugs and Accel300+ Igntion. WHAT DO YOU GUYS THINK ???????? thanks

 

at the flywheel he might be making that much gross horsepoewr.

no one can give you a definate "yes he is" or "no he is not"

sounds like its dyno time.

 

Doesn't sound like a few mods, but of a very expensive build!
I mean, think about the cost of the bottom end & drive train that will support that amount of torque.

Ron

 

I don't think he will come close to 440hp with that Combo

 

don't think so, but you never know till you have it on a dyno

 

I don't think so either, not with that cam anyway.

 

i would say somewhere in the low to mid 400 range at the crank for that combo...

 

thanks guys, Its been an on going thing about his mods, and when i say "dude i dont think that'll get you 520 with a 124k stock block" He flames on me saying i dont know **** because i have a v6. Like that means anything. Maybe he'll read this and see others opinions and see for himself. Or maybe He'll just think we're all stupid v6 owners I told him repeatedly to post it here and see what people say but he refuses so i did.

 

Stock throttle body? 520 HP?

I have a bud who has a similarly modified ZZ3 (except just ported exhaust manifolds instead of headers). We calculate (based on 1/4 performance numbers) he's making about 420 flywheel. Headers aren't going to make a 100 HP difference.

Ain't bench racing great? You never lose!

 

That is freakin hilarious...thanks for the good laugh! Now I can go to work.

 

You know what? I get really tired of dumb asses shooting their mouths off about what there running. Most have never been to a track or dyno. The others ran the 1/4 mile on a local street somewhere using their odometer as a gauge with their little buddy at the other end with a stop watch. I say put it on a dyno and show me the numbers. Run the 1/4 mile at a licensed track and show me the slip. Otherwise...SHUT THE HELL UP!!! OMG they are so annoying! Then there are those who post here asking us what we think their car will run in the 1/4 with their particular setup. TAKE IT TO THE DAMN TRACK!!!!! Thanks for letting me vent!

 

all thats on a 100+ mile shortblock? that just doesnt make any sense to me.. if your gonna do all that work why wouldnt you replace the bearings, have the crank turned if nessicary, and hone the cylinders or bore em if they needed it, and re-ring it at least?.. i dont think I'd be very comfortable trying to push all that out of a higher mileage block.. especially if you know it's been driven hard.. he pretty much would of had to tear it down to the short block anyway.. why skimp there? thats the first thing I put my money into when trying to build an engine to proform.. normally I go way overkill.. then I start getting the other parts... to each his own I guess.. I'd just rather have something that I put a decent amount of money into to hold togather for a while.. i wouldnt wanna buy a nice set of aftermarket heads on a block thats gonna put a rod through em..

 

LOL.

 

LOL, i'm glad you guys see what i see. I hope the noodle reads this thread.

 

Don't worry about it man, I know what kind of hp I'm going to be making, airflow makes hp, why don't you do some research and find out what kind of airflow is needed to make 500 hp, victor jr's have the airflow to do it, don't worry I'm going to make that hp. cronsformula350
<~~ YOu see the noodle, he's on the car audio forum posting all kinds of misinformation. I was gonna leave the subject alone but he's too misinformed plus he insults me for owning a v6.I mean what does he think the headders add 150 hp?

 

How many stickers is he gonna put on it?

 

RIght!? I think he's painting it yellow. You know yellow adds hp

 

lol tell him to check out this thread...

 

I did, he didnt say anything since. I also pointed out someone elses car on here that has a ton of work and a blower on top and makes 500 something hp as an example of the work it takes to get to that level.

 

Picard is right on, until you take it to the track you never know. I've seen guys with all of the "magazine mods" that are supposed to make the car a rocket go to the drags and fall on their face. I know I'll be criticized for saying this, but if you have a street legal daily driver that runs 14.00 flat, then you have a pretty fast street car.
For instance:
NHRA stock class record holders.
G/stock 10.96@120.41 66 chevy nova
O/stock 12.19@106.70 66 chevy biscayne
V/stock 14.99@88.03 66 chevy corvair
Kind of humbling isn't it?

 

I dont think the track is the right answer either since were talking about hp numbers. Seems like the guy falls for marketting lines and thinks each mod gets you huge hp numbers. Thats isnt really the case.Unless you go turbo or nos. To get a 124k small block to 520 hp na takes some work. Doesnt matter anyway because some people are know it alls and he seems to be one. Whatever i say to him its"your mad cuz you have a v6" like that means anything. Cars i've had in the past would eat his car easy. I started this post so he could see im not bull****ting him. Doesnt seem to have any affect though
Oh well reminds me of this guy who spent all this time and money on this rlcer cars motor only to dyno it and find out it made 20 more hp.
But as 5.7kid said, bench racing is great and some people only live in a bench racing world.

 

[QUOTE]Originally posted by br()bert
[B]I dont think the track is the right answer either since were talking about hp numbers. Seems like the guy falls for marketting lines and thinks each mod gets you huge hp numbers. Thats isnt really the case.Unless you go turbo or (nos).

Ummm...isn't "nos" a Company? You must mean nitrous.

Anyway, like I said show me the slip from the track or the chart from the dyno.

 

A stock 48mm throttle body feeding 520HP? That may be a stretch, since that TB has only been proven to support 510HP on the RamJet 502. That was with 520 ft/lb, by the way.

 

I thought it was 550 lbs-ft...

Okay, there I go again.

But, you'll have to admit that everything that comes after that TB is totally different from a 3rd gen TPI.

 

Hey, y'all don't laugh, I have some 100hp stickers in my toolbox. I even have some 175 hp and some 225 hp stickers. Stickers really do add hp, but if you want to be really bada$$ paint that car gray. That adds at least 250 maybe 275 hp. That is what I did.

 

5-7,

You might be right about the RJ-502. They originally made 500HP/510 ft/lb, then were upgraded to 510/520. They may now be even higher, but I have an older GMPP catalog.

You're right. The parts downstream of the TB on that engine are significantly different than the common TPI (we should be so lucky). The point was that the twin 48mm TB can pass enough air to make at least 510HP, at least somewhere, without a blower. I think getting much more than 454 cubes squeezed into a small block Chevy case would be a real task (since a 454SBC is no easy feat), and it may take that kind of displacement to make that kind of power without boost.


JPK,

Hang on to those 225HP decals. Word is they are getting very hard to find in this country these days.

 

I dont think the guy who claimed those numbers with those mods is posting here any more. I havent seen anything from him in awhile.