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What should my next mod be?

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Old Apr 18, 2007 | 05:59 PM
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Default What should my next mod be?

I currently have:
kook's lt, kooks x pipe w/ converters, bb prt exhaust, pulley, air intake, 238/242 .609/.615 111 lsa cam and supporting hardware, 160 stat. What should my next mod be? I don't want to spend a whole heck of alot, was thinking about some 243 heads that have been p&p'd to flow over 300 at .600 lift. Ideas please!

I need to beat my little bro. Right now he has a 92 Mustang w/ a supercharged 331 stroker at 8 psi, complete bolt ons, tubular k member w/ eibach coilovers in front, and drag air bags w/ drag springs in the rear, full length subframe connectors, fully built rear end, weld draglites all the way around w/ mickey thompson et streets.(he has almost 30k into his build)

Straightline and from a roll, I'm not even close to him and I can't stand that my Corvette is behind his Mustang. He lets me know about it at every chance he has. Just to let you know how far behind I was, I was looking at the nose of my car after we drove the other night and all I see is his black exhaust soot all over the paint. Needless to say he also got a chuckle out of that.
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Old Apr 18, 2007 | 06:06 PM
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built rear with 3.42 gears... oh wait i got that forsale lemme know hah
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Old Apr 18, 2007 | 06:37 PM
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Originally Posted by Vette-Red
I currently have:
kook's lt, kooks x pipe w/ converters, bb prt exhaust, pulley, air intake, 238/242 .609/.615 111 lsa cam and supporting hardware, 160 stat. What should my next mod be? I don't want to spend a whole heck of alot, was thinking about some 243 heads that have been p&p'd to flow over 300 at .600 lift. Ideas please!

I need to beat my little bro. Right now he has a 92 Mustang w/ a supercharged 331 stroker at 8 psi, complete bolt ons, tubular k member w/ eibach coilovers in front, and drag air bags w/ drag springs in the rear, full length subframe connectors, fully built rear end, weld draglites all the way around w/ mickey thompson et streets.(he has almost 30k into his build)

Straightline and from a roll, I'm not even close to him and I can't stand that my Corvette is behind his Mustang. He lets me know about it at every chance he has. Just to let you know how far behind I was, I was looking at the nose of my car after we drove the other night and all I see is his black exhaust soot all over the paint. Needless to say he also got a chuckle out of that.
Get a new nice set of heads and throw a 150 shot on it. I'd see that waking things up quite a bit...
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Old Apr 18, 2007 | 07:15 PM
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Nitrous. It works very well....ask me how I know
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Old Apr 18, 2007 | 08:04 PM
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Thats a pretty good size cam to be running with stock heads, I'd go with a set of AFR 225s for small bore, bump your compression up to 11.0:1 and get it tuned to a "T", good speed density tune.

Is he smoking you on the street or at the strip? or both?

Those rustangs, properly built like that are very hard to beat, specially if the driver is really good and knows how to manage his traction.

You could always lose the next one with his girlfriend in the passenger seat (well mostly), that would help even things up!
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Old Apr 18, 2007 | 08:18 PM
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I'd rather not say if if was on the street or the strip. No street racing here........
I was thinking about some heads and maybe a 3.90 gear for the rear. That might even things out a bit, at least until he puts a different pulley on the supercharger. I don't know if I want to spend the money on afr's if I could get a good deal on some 243's that have been p&p'd. Will I see a noticeable diff. between afr 225's and p&p'd 243's.

Last edited by Vette-Red; Apr 18, 2007 at 08:21 PM.
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Old Apr 18, 2007 | 10:11 PM
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If you can swing the gears at the same time, by all means do so.

If he keeps swapping pulleys and running up the boost, you may eventually get to watch him limp off to the side of the road eventually. And there's always a traction limitation, especially on the street.

Next time he's not looking, put an old iron engine block in his trunk...
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Old Apr 19, 2007 | 12:03 AM
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http://forums.corvetteforum.com/show....php?t=1681659
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Old Apr 19, 2007 | 12:56 AM
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Go with a good set of heads, and perhaps gears. Dont forget there is always Nitrous!
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Old Apr 19, 2007 | 12:38 PM
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If you put a 150 shot on there, you won't need to swap the heads. Hide your N20 bottle in your center compartment with all of the accesories (heater, safety tube, electric bottle opener) and Nitrous Dave sells a setup under the hood that you can't even see (it's appropriately called the "Money Maker" and is around $1500 for everything needed to spray up to 300 horses). The thing about that kit is you WILL NOT see it when you pop the hood! When you WHIP your brother and he asks, tell him you got a tune put in it!

He's also got you in the traction department with those ET Streets on there. Hooking up the power is just as or maybe even more important than overpowering him. How many times have you heard of a 400 rwhp car beating a 650 rwhp car because the higher horse car couldn't put it down? Believe me, it happens more than you hear about.

Good Luck!
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Old Apr 19, 2007 | 02:57 PM
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yeah, I just talked to my little bro and now he is going to re do his engine and go with a 347 so he can up the boost to about 16 psi. He is on a cast crank and connecting rods now, so he wants to go forged.
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Old Apr 19, 2007 | 06:34 PM
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Looks like you better go F/I too. I know several guys with blown Stangs (fox-bodies), and they're all running low 11's and high 10's in the 1/4.
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Old Apr 19, 2007 | 10:32 PM
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No cheap way to beat that in a vette, but you do need a set of heads to match up with that cam, and the gears wont hurt either.

Good Luck!
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Old Apr 20, 2007 | 12:58 AM
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How much power is your little bro putting down? Any track times with his car?

I think you need to know what you are up against before you start throwing cash at your car.

I'm surprised he's going to go the 347 route. Most of the times when 5.0 guys want to go big HP on the little 302 based blocks they won't go over a 331. The 347 starts running into rod to stroke ratio issues and the wrist pin gets pushed up into the ring pack causing oil control issues from what I remember. For all I know he has a tall deck A4 block or a Dart Iron Eagle, but I doubt it since you said he has a cast bottom end.

If he's on a stock block(non-sportsman) I doubt he's over 550 to 600 HP(with a main girdle), but that in combination with a light car may be hard to beat.

let's see what we are working with here.

Max
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Old Apr 20, 2007 | 08:22 AM
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Some new rear gears or new heads would help.
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Old Apr 23, 2007 | 12:11 AM
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challenge him in the twisities and get one back.

Good Luck
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Old Apr 27, 2007 | 04:14 PM
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i know a bit about the stang world (been there and built that) no matter what he does if he stays with a production stile 302. the motor will not hold more than 500 flywheel hp even with girdles. if he ****** it past that its only a matter of time till BOOOOOOM
ps if he strokes to 347 that will lower his power band and increase low end tq.(assuming he uses same cam/intake) hard to hook up if peek tq is at 3000 and shift is at 5500. but smoking away power band is fun to watch as long as its someone else.
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Old Apr 27, 2007 | 05:43 PM
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Right now the shop that built his car says, on the stock block 331 stroker, he should be able to run sub 11's. His car is set up for straight line acceleration. They said that if he goes w/ the 347 and runs max boost he could be in the high 9's, if he knows how to drive(the owner knows what he is talking about because he races, he had a 408 tt that would run in the 7's!!!)It hooks well w/ the new rear end and the mickey thompson's. Right now I think he made around 475hp and 460ish tq. With the 347 they said he would be well over 600hp. If he does the 347 I know I would never be able to keep up without f/i.

I definately want to do the heads but don't know if the afr 205's or the afr 225's would be a better choice. I would eventually like to do a 402 or 408 with f/i for my car, but that is way down the line especially since the car only has 8k miles on it.

I also know about the stang market, my previous car was an 03 Mach 1, bolt ons and cams(4 of 'em).
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Old Apr 27, 2007 | 10:03 PM
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So those numbers are at the wheels then. Ok, then I would go the full heads and cam route.

4X heads and cam package will get you into the 10's and with the right bolt ons to compliment it it will put down over 500 rwhp. This is with a set of 243 castings, not AFRs or TFSs.

The only thing I would hate to see is you spend money on a setup only to have him up the ante a month later. So I would go big now .

Forged 346 with a procharger setup. 700 rwhp and 9 second passes. Plus you can brag about how you have 1 less cubic inch if he goes 347.

From a roll or a dig, it doesn't matter, you'll smoke him then.

Shoot me PM if you have any questions.

Max
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Old Apr 27, 2007 | 10:41 PM
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Cost on a forged 346 and a procharger? Probably enough to put my kid through college!!!! Was considering going forged and f/i or just doing a 408 w/ a procharger. So you think that the 243's P&P'd would be just as good as a set of AFR's?
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