91camaroRS

i do not understand that at all i bought a 750 cfm holley vaccuum scondaries and in the instructions it says DO NOT USE with automatic overdrives it can cause serious damage . does anyone know of this ???

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350 bored 30 over ..882 casting heads ..comp cam..hooker headers.. 700r4 corvette servo .. 3.73 and SLP posi no hood on the car , holley 750 CFM, performer RPM intake.. and umm couple other things here and there

Big454blockchevy

The only thing I can think of is it is referring to the t.v. cable being misadjusted but there is a bracket that takes care of that problem. Ofcoarse a t.v. cable that is misadjusted and causes to much slippage in your tranny is bad for your tranny.

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Big 454 72 Chevy Nova
383 86 Camaro Z28
10.5:1compression 186 casting Heads,234dur.488lift exh&int,Edelbrock performer intake, Holley750 vac.sec 400 crank,flat top pistons,edelbrock valve springs and lifters,tranny shift kit,2500 stall converter. Will install 3.73's later on and might go with a more aggresive cam.As of 4/01 added Hooker Headers,2.5inchpipes with 40 s. Flowmasters.Ignition upgrade include: MSD Coil and MSD module.

FastBroker

AND the radius for the TV cable nipple is incorrect. You must make the radius to the shaft pivot 1.125", I believe, not the 1.25"+ that it is for the TH350 kickdown. Trust me, .125" is a big percentage change in throw on a 1.125" raduis... Changes the tranny band pressure(s) for correct operation. If you use the longer throw, the pressures will be too low at lower throttle/daily driving speeds and cause slow/premature wear.

Duffster

drill the hole where necessary on your bracket and you're set...

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Duffster (age 32)
BEAT DOWN HARD 88' Camaro Sport Coupe,
1978 Caprice Classic 305 motor havin'(WITH NO COMPUTER),Torker II intake, Edelbrock 1406,600cfm w/vacuum secondaries,Accel HEI Supercoil/Cap/Rotor Sparkin',84' POS 700R4 Tranny usin', 84' Z-28 Nose clip wearin',
84' Z-28 Hood covered,
AND THE TIRES:
245/60-16 Firehawk SS20 on Firbird rim(1-passenger rear),
235/55-15 BF Goodrich's on CompTA's on Z28 rims(2-on front),
235/60-16 Pirelli P600 w/a curb check or 3 also on Firebird rim(1-drivers rear),
REAR HATCH MASTER OF ALL!!!
DuffsterCamaro@HOME.COM
Owner of the Camaro 0 out of 10 Third-genners approve of, no longer part of the non-existent Iowa crew.

jayman350

I am almost positive that they mean that you need a TC lockup to use the Holley and 4speed together. I was asking about this before and I saw a few kits in summit that deal with 700r4s check summit pn prf-60109 to see what I am talking about. I know it can be done (Holley and OD) but it does take a little work. Otherwise you will fry your tranny.

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Jay

black 85 Z28, t-tops, 4bbl carb, flowmaster 80 series muffler w/ custom tips (hollowed out cat), edelbrock chrome air cleaner, Infinity 4" 2 way front speakers and Infinity 3 way 6x9s, Alpine CDA-7863 head unit. many more mods planned (holley carb 4160 and edelbrock performer RPM intake coming very soon)
Jay's webpage

Biochem

They are talking about the location of your TV cable... get the throttle bracket in Jegs 510-20-95 for the 700r4 and you'll be fine.

I also have a vacuum switch that is supposed to lock up the converter in 4th, but I haven't installed it yet. I have the feeling you bought the same carb that I did (Shinny chrome, dual bowls, 750vac). Don't plan on using that chrome fuel line that came with it... it won't clear your EGR valve and the inlet is right next to your heater hoses on your manifold... I used a Moroso Y-pipe and it works fine.

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1984 z28 w/ a 357 cu in. monster engine which is looking like the posterchild for Edelbrock with the exception of the Holley 750vac... all the suspension stuff... 9-bolt posi disk is in...

-=ICON Motorsports=-

Damon

Duffster and Jayman are BOTH correct in my opinion. THe TV cable and it's adjustment and linkage layout are a LOT more critical than an old TH350 "kickdown cable". However, running around in Overdrive with the torque converted unlocked will ALSO cause premature tranny death. It runs the RPMs down below the tranny's stall speed and causes a LOT of heat buildup in the tranny fluid.

Use of a good aftermarket tranny cooler will help your tranny live a long happy life as will using some sort of aftermarket switch like Jester has to find an alternate way of locking the tranny up without the ECM's help.

DUFFSTER- you're not running only a SINGLE throttle return spring are you?? You're in for a wild ride one of these days!



[This message has been edited by Damon (edited May 09, 2001).]

Duffster

right now, the carb has a single spring...but it's on a Edelbrock carb now, not the HOlley pictured...
the dual springs will bind with eachother and thats even worse...
the single spring is a BIG STRONG one, so i'm good for now...

FastBroker

Dual springs don't bind. A smaller one is inside a bigger one, just in case one happens to break!!! Doesn't matter how big/strong your single spring is, if it breaks, you could be in for a hurtin'!!!

Duffster

with the angle I have available for mounting the springs (dual) from the carb to the bracket, the larger one expands slower than the smaller one and the coils between the 2 of them bind...this is what I meant. anywhere past 1/2 throttle they become intwined and that is a worse option than 1 spring I believe...