snflupigus

could i run higher than a 4.11 rearend with gear vendors? What would be the et advantage with say 4.98? with gearvendors on a mostly stock 350tbi? I just read about theses things and they really triggered my imagination.

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IM: snflupigus | ICQ: 96787192

Snflupigus.com

Open Element Tech Article

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Kevin91Z

iTrader: (1)

They're also $2000, but if you've got money to burn... Yah, you could probably go 4.11's or 4.56's in your rear end, but do you need that much gear?

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1991 Camaro Z28
5.7L 5-Speed (originally 305)
13.25 @ 107.18 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
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Bort62

What You Gotta Figure, is that For the Pirce of those gears, You could Make a Whole Lot more gain Investing that Money someplace else

FastBroker

Snuffy, I think the ratios for all/most of their OD stuff is .78. With this ratio and 4.56 gears, it would be like having 3.55's in your car now... Not bad at all for a DDriver. I usually go/with 4.11 gears w/700 tranny in all of my cars/trucks, for short highway hoppers OR tow vehicles, anyway. I mean, that's what going fast is all about, isn't it? Going fast, that is. Or, actually, getting fast the fastest...

I have a LOT of experience with these guys but for 4wd app's only. Almost (hee hee) never break and GREAT support if/when they do and/or you ned help, but you won't need help. Never gonna find one used but can find good prices if you look around. I've actually never seen a 2wd version... Have fun.

EDIT: Didn't answer your question. ET times would be REAL nice with 5.13 gears or so but your engine will rev-out in 3rd in the quarter mile. I don't use 4th when racing becasue it doesn't shift hard enough. Not sure of the ET change but the Dyno Shop ET software (or similar) could tell you pretty accurately as it would basically be a gear swap with a little extra weight in the vehicle. Put your existing vehicle in and change the parameters so that the eomputer ET matches real-life for you. Then put in the gear swap with added weight. They are PFH, by the way.



[This message has been edited by FastBroker (edited December 27, 2000).]

snflupigus

incase you were wondering why i would spend 2k on this instead of on the motor. I'm becoming more and more annoyed with people that say the only remedy to a 305 is a 350, etc.. I really want to push the stock 305tbi to the utmost limits. Dont you think it would be nice to have a appearingly stock engine, running a second faster than all the other cars with stock engines. Its just a thought. These things seem rather new to the market, or am i wrong, maybe they will come down in price? Why are they so much? tolerances or strength, what?

Also, if iv got my rearend up through the tranny built like that, i can drop almost any motor i want after that, and be smokin em all.

o, and to kevin. Does anybody really NEED anything more than a 4cyl? define NEED in performance/racing jargon.

[This message has been edited by snflupigus (edited December 29, 2000).]

Bort62

An Interesting Way to look at it Snuff, I must admit, By Why Not Tackle Gm's Shortfalls ( the CAM!@#$@#$ ) before Over Doing it On Parts they did a decent Job on ?

But then agian, Who Am I to judge, Do what Makes YOU happy, thats what its all about




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60 Ranchero - Project ( Money Hole )
85 Sport Coupe LG4 - Daily Driver

Livin' the Stereotype

El Guapo

Forgive me, but l think this is the wrong way to go about it. Doing gears will help in aceleration, true, but for every full number up you move, you move an average of 1K revs at a given speed. So youre gonna have your engine running faster (wearing faster) and eating a good bit more gas.

With a build up, heads and cam and intake, you might spend less money (Good in most people's books), more HP (also good), LOWER RPMs (Less RPMs for given HP), and thus, HIGHER MPG (More efficient use of fuel.) It may not be as flashy, but with those benefits, ld definitely do the buildup.

Clayton

PS With the right combo, you can produce enough to compete w/ the 350s w/o the gears.

snflupigus

uuu, guapo, thanks but im no newbie. Do you know what a gear vendor does? It takes divides your gears, so that you can have a taller rearend, while keeping your rpms down at highway speeds. Or, keeping your engine within its powerband while racing. For instance instead of shifting from 1,2,3. you shift, 1,2,2W/gearvendor engaged=2.5

Anybody can build a small block. and i will someday. But i want to see what i can get from gears with a 305.

O, and BORT62, you shouldnt pic a cam until you know what rearend you are going to be using. i dont. tru the cam is weak, but its matched to heads that would need replaced/or ported if it was changed for something more radical.

Im not about to throw 2k out there for anything right now. my goal of this post was to see what kind of numbers people thought would be acheivable with gearvendors, and a radical rearend.

My guess is i could maybe cut a second from a stock 305tbi with 2.73's. When matched to an engine with more beef, i think it would make less of an improvement, but still be a very nice feature to have.

so somebody do the math for me. forget about the gear vendor. what will a 200hp engine with a stockish 700r4 run with something like 4.98's.

THANKS.

Bort62

I know Snuff, But that Also Depends On How radical Of a Cam Change You Plan On Doing.

Going From our Incredible .350 Lift to Somehting like a .488 ( edlebrock performer ) Without changeing anything else ( aside from Valve springs and Lifters and the rest duh ) Would make a HUGE improvement.

Of Course It woudltn be Fully utilized w/o Exhasut, intake, head porting and all the Other go Fast Goodies, But The Cam In our Motors Is the Obvious Weakest Link ;0

But Again, Im Not here to Tell You how to Run Your Show

And Not ANYBODY can build a SmallBlock, you should see some of the yokels out here try lol



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60 Ranchero - Project ( Money Hole )
85 Sport Coupe LG4 - Daily Driver

Livin' the Stereotype

snflupigus

t r u. i guess not everybody can.

and yes, the lo3 cam, is she it.

Dont worry, i wouldnt stop at just gears. Theres no way i will be able to stand driving a stock l03 for more than another summer. especially when the big bucks will be rollin in after college is thru.

but, wouldnt everybody just love to have a gearvendor.?

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IM: snflupigus | ICQ: 96787192

Snflupigus.com

Open Element Tech Article

ENGINE SPECS:
Stock Rating: 170bhp & 255ft-lbs
305 TBI,Open Element,K&N 14x3,Hypertech Stage I,454 GM TBI
Now Rating: A Little More

STEREO SPECS:
JVC Kalmeleon kdlx3,Infinity Kappa 2way 6x9's,PPI 4x6 Coaxials,PPI PC2400 AMP @ 2ohm
DEI Studio 12" 4ohm DVC,Custom Box:Exactly 1 Cubic Foot

stingerssx

The Gear Vendors unit is a really nice unit. I would love to have one. It was invented for towwing, and the hotrodder found it and used it. It would give you awesome 60 foot times and also keep you rpms low on the freeway. If you've got the extra dough go for it!

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'82 Firebird, dead stock, 9 bolt disc rear, over 200,000 miles and still going strong, more to come...

88 427 Camaro

Gear Vendor Under/Overdrives have been around for awhile, so don't expect the price to come down on them.

The biggest advantage to using one is to allow for a numerically higher rear gear because of the overdrive.

The actually splitting of the gears (shifts) is only good for 1-2 tenths.

Don't forget, these do take power to run meaning you will probably increase the drive train losses by another 5%.

Miles

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88 427 Camaro
12.18 @ 113mph 1.75 60ft

www.koolmeister.com