Gained additional power and torque to my setup!

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Jul 16, 2006 | 07:55 AM

#41

HOSS

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as always, very impressed Patrick

Jul 16, 2006 | 12:53 PM

#42

dug

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From: Phoenix

Quote:

Originally Posted by Patrick G

Number are through an open cutout and I've always run an UD pulley. Interestingly, my numbers only dropped to 467/422 with the exhaust closed. I guess that means my setup is pretty lethal in every day street driving. You can check out all the details of my mods by clicking my signature.
Those are coming very soon. With this dual disc clutch, my stock 10 bolt may not survive too many hard launches, so I will have to look more at trap speeds than ET to see the power gains.

Im just curious cuz your car has similar weight and gears as mine. If you want to be quick nothing beats the slushbox.

Jul 16, 2006 | 04:39 PM

#43

52172

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From: Buellton Ca

Quote:

Originally Posted by Patrick G

Yes, you definitely have me on the torque side. You Vette guys running LG long tube headers have a definite advantage in the exhaust department. When LG begins to offer their long tube headers for the F-bodies, we should see our torque numbers come up even more. Good stuff!

When are they supposed to come out??? How much do you think they are worh over QTP HVMC headers?

Jul 16, 2006 | 04:56 PM

#44

Patrick G

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From: Victoria, TX

Quote:

Originally Posted by 52172

When are they supposed to come out??? How much do you think they are worh over QTP HVMC headers?

First off, they're going to be quite a bit longer than the QTP header and secondly, they are supposed to have a really cool dual catback with x-pipe that is similar to the Vette system. I would expect them to be at least as good as the QTPs at peak hp and probably 5-10 better in peak torque. Rumors point to August or September of this year, but you never know...

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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
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Jul 17, 2006 | 04:34 PM

#45

gollum

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Patrick, What do you think about the new Edelbrock headers. Wouldn't they make more torgue? Although not stainless, the quality of these headers is verygood.

Picture:http://gmhightechperformance.com/tec.../photo_27.html

Attached Thumbnails

Gained additional power and torque to my setup!-3506570.jpg

Last edited by gollum; Jul 18, 2006 at 06:01 PM.

Jul 17, 2006 | 06:17 PM

#46

Tony Mamo @ AFR

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Quote:

Originally Posted by gollum

NICE header....

I think the "LG style" would still be better on a stock displacement F-Body (if its got the same extra long 1.75" primary pipes and 3" merge collecter as the current C5 design), but that Edelbrock header would crank on a 402 or larger stroker....good TQ and big power running some displacement in front of that design. I wish there was something like that for my C5's future endeavors....I think it would be just what the doctor ordered for my upcoming 415 project. I'm fairly certain my current exhaust system (which may even by choking my current 383 somewhat) will pose a far greater restriction on the larger, higher output 415, especially past 6500 RPM's. It will certainly help make MOUNDS of low and midrange TQ, but fall off quickly past peak HP. Might have to try what I have and go from there...

Thanks for posting the link....wasn't even aware that option existed for the F-Body guys but I wouldn't exactly call it a "bolt in" by any means either....looks like fabricating skills and tools are a must!

Tony M.

Tony

Last edited by Tony Mamo @ AFR; Jul 17, 2006 at 06:36 PM.

Jul 17, 2006 | 06:24 PM

#47

JakeFusion

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From: Pace, FL

Quote:

Originally Posted by Tony Mamo @ AFR

NICE header....

I think the LG style would still be better on a stock displacement F-Body (if its got the same extra long 1.75" primary pipe and 3" merge collecter as the current C5 design), but that Edelbrock header would crank on a 402 or larger stroker....good TQ and big power running some displacement in front of that design. I wish there was something like that for my C5's future 415....I think it would be perfect and my current system will start to pose a larger restriction in high RPM and peak #'s).

Thanks for posting the link....wasn't even aware that option existed for the F-Body guys.

Tony

Vette Doctors has the 1-7/8" Merge Style headers for the Vette from American Racing Headers.

Those Edelbrock headers are sweet, plus if you buy it without the collector welded on, you can configure it with the collector extension to meet your specific needs. And at the price it goes for, it's a good bargain. The Ti-Tech finish is supposedly pretty good as well.

Jul 17, 2006 | 07:02 PM

#48

Louie83

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From: Dayton, OH

Will these LG headers be stainless?

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Jul 17, 2006 | 08:29 PM

#49

52172

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From: Buellton Ca

they should be the same material as all their other headers. I just got a reply from them and they said their header will be ready in one month!

Jul 17, 2006 | 09:14 PM

#50

Patrick G

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LG loooooong tube headers for F-bodies...

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Jul 20, 2006 | 07:40 PM

#51

Street Lethal

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From: Old Bridge "Raceway Park" N.J.

Geez, talk about power under the curve. My goodness Pat, those are some very impressive torque numbers, especially when you consider the displacement your working with. Good thing you live where you do, as I'd never want to pull up next to that thing at a stop light...

Quote:

Originally Posted by Patrick G

RPM RWHP RWTQ
2400 148 324
2600 164 332
2800 182 341
3000 203 355
3200 222 365
3400 243 376
3600 266 388
3800 288 398
4000 306 402
4200 327 409
4400 346 413
4600 371 424
4800 392 429
5000 407 427
5200 420 424
5400 436 424
5600 453 425
5800 464 420
6000 468 410
6200 472 400
6400 475 390
6600 470 374
6800 465 359
7000 458 344

Jul 21, 2006 | 01:04 AM

#52

TroubledWine3

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350 lbft. of torque at ~2900rpms is VERY very impressive, especially out of a 346. Awesome job, Pat. Can't wait to see what's next.

Jul 21, 2006 | 08:25 AM

#53

Street Lethal

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From: Old Bridge "Raceway Park" N.J.

Quote:

Originally Posted by TroubledWine3

350 lbft. of torque at ~2900rpms is VERY very impressive, especially out of a 346. Awesome job, Pat.

Agreed. Also, I feel that many people view those numbers, and don't see what is really going on. I mean, from 2400 through 7000-RPM, rear wheel torque remains well over 300 foot pounds, peaking at 429 @ 4800-RPM. That is simply incredible. Are you sure your not running a big block underneath the hood, Pat?

Quote:

Originally Posted by TroubledWine3

Can't wait to see what's next.

It's going to be interesting to see where the new LG long tube headers put him. Could only imagine if he ever decides to run a ProCharger when all is said and done...

Jul 21, 2006 | 08:37 AM

#54

Billiumss

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From: Erie, PA

VERY IMPRESSIVE.

Care to share the full list of mods along with all the "little details"

By following that receipe, stroker combos have more to compete with.

Bill

Jul 21, 2006 | 08:51 AM

#55

Patrick G

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From: Victoria, TX

Quote:

Originally Posted by Billiumss

VERY IMPRESSIVE.

Care to share the full list of mods along with all the "little details"

By following that receipe, stroker combos have more to compete with.

Bill

I have detailed everything including many pictures, specs and dyno graphs when you click my signature...or to make it easier, click here: http://guerragroup.com/2000TA.htm

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Jul 21, 2006 | 08:55 AM

#56

Billiumss

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From: Erie, PA

Quote:

Originally Posted by Patrick G

I have detailed everything including many pictures, specs and dyno graphs when you click my signature...or to make it easier, click here: http://guerragroup.com/2000TA.htm

Thanks, I guess I should have moved the mouse over your sig...

Jul 21, 2006 | 09:10 AM

#57

Billiumss

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What length pushrods are you using? Didn't see that listed...

Jul 21, 2006 | 09:25 AM

#58

Patrick G

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From: Victoria, TX

Quote:

Originally Posted by Billiumss

What length pushrods are you using? Didn't see that listed...

7.400" pushrods to accomodate the shaved heads and the smaller base circle of the cam. I'll make a note to add that to the website. Thanks!

Jul 21, 2006 | 09:56 AM

#59

Billiumss

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From: Erie, PA

Why a smaller base circle? What is it?

Are you using stock 1.7 rockers?

Jul 21, 2006 | 10:15 AM

#60

Patrick G

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From: Victoria, TX

Quote:

Originally Posted by Billiumss

Why a smaller base circle? What is it?

Are you using stock 1.7 rockers?

To gain lift, cam manufacturers will make the diameter (base circle) of the cam smaller in order to allow the higher lift lobes to still fit inside the cam journals.

For instance, the stock base circle is 1.553" (or .7765" radius). The stock lift is around .500".

To run a .650" lift cam, you'll need for the diameter of the backside of the cam to be smaller. This means a smaller base circle. The BS for an LSK lobed cam is 1.395" or .6975" radius. When you have a smaller base circle, typically, you will need longer pushrods to maintain stock lifter plunger depth. But because my heads are milled, I get most of the reduction in base circle back. Therefore, I can run a stock length 7.400" pushrod.

Yes, I'm using bone stock 55k mile rockers and lifters.

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