Not that I'm a great mechanic, but have had some problems in the past. I'm not a big fan of holly carbs, the power valve can blow out with one back fire,I would check there first. Second problem I have had is under hard throttle I had a car do the same thing,did all that you have said already, found a plug wire that was being pinched during a hard throttle when the engine torqued to the right. Shorted out the wire everytime.

Wanted to install all but now the gasket set they give me is not the right one. They seem quite the same but once you place them on the carb pieces , there different kinds.Sure as even the location pins don't fit.
Ok, this week another set, back to speedshop.
took my time to adjust the spoiler of the SRT10.From factory it is placed on the sides of the bed but i have a complete bedcover in car-color fiberglass. This is tapered so the spoiler is to large to put it on the cover.
I cut out a piece in the middle , made a inner mold with epoxy , removed some of the foam filling each side and put it all together again with epoxy .The inner mold piece gived a perfect alignement of the complex schape and for strenght i put 2 stainles tubes trough the mold piece and in each side foam, again with plenty of epoxy.This is now hardening out on the kitchen table.... Tomorrow i will  finish the litle seam with black bubber.I't worked fine, even if i say it myself !
Here whe have different opinions about spoilers......, some call them TO exagerated , others find them quit nice and sporty.I like the spoiler because it's factory original and not some "airplanewing" as find on younsters cars : a small car with a spoiler that could came of a formula 1. My son would also install him , as our wifes find it a bit "kitsch".Ok, now i can present him and make my mind up if i go drilling the holes.... At least he's a fix car-color and not aluminium with adjustable trimming ...
What do you guys think ? is that spoiler exagerated or usefull ornament as in the spec's Dodge claim it gives xxxx down force with xxxx speed and  should i just act in the favor of ORIGINAL just as whe all here are doing with our vettes ?

It's bed -time for me ( past 1 am... )

see you !



   

Well Barry,
Being an aviator for over twenty years now, I can tell ya that if you have a flat planform stuck up in the relative wind or slipstream and it is oriented to create high pressure on the topside it will certainly ad downforce where it is attached to the truck. If you don't believe it get someone else to drive the truck while you stand in the bed. Then try holding up a sheet of plywood at an angle that will create high pressure on the advancing side. Be sure you are strapped in because at about 35MPH you will be going for a ride the hard way if you are not!

Enjoy that beast!
Scott

Thanx Scott, so you favorite the spoiler ! nice , as i like it toooo.
I know the "Bernouilly" lawn , air streaming above at a certain speed and steaming below around a bigger curve,  giving more air-speed .And speed is visa versa pressure , so there less pressure under the spoiler than above and resulting in downforce . For a airplane wing it's ofcoarse the other way around , giving up force. I had to deal with that designing the keel of my sailyacht , there's also "lift". ( naca -profile ) to reduce our drift .I think what most people don't understand is that the force is create by vacuum and so by absoluut air pressure and not by "over" pressure of the ambient air.
ok ,enough theory , i should be sleeping !!!!!!!!!!!!!!!!

The spoilers do work.  If that' the priority, you need it.

If the only consideration is looks, I think they look very good indeed.  They are a very nice visual touch.

But if the truck is going to be used to move things of any size, the spoiler is in the way of loading the bed and can be quite a pain in the back side (of the truck of course).

It comes down to what you want to do with the truck and what you like.  My guess for your purposes, you will be happier with it in place.  But it would be in my way.  I would use the truck bed too much.  But I would miss the look.

 Ken, why would you spray salt water on your Vette? I thought you winter stored your Vette so you would'nt get salt from the roads?                        

  

Denny

  

Just on the spark plug wires and ignition system.  It allowes a poor insulation to find a path to ground and will show a weak system.  It has the same effect as very humid air soaking the insulation.

It's not uncommon for poor secondary ignition insulation to arc, short, and cause a misfire.  The usually happens under two conditions.

First, when the system is damp, usually during a rain or after sitting overnight.  When they are cold it's a bit worse.  The misfire often stops when the engine warms up a bit, and the ignition system dries out.  This makes it very difficult to find the problem when the car is being worked on and warmed up already.  

Second, when the engine is under moderate to heavy throttle.  This causes the resistance in the cylinder to rise due to the denser air quanity from opening the throttle more and allowing more air into the cylinder.  When the resistance raises, the igntion system requires more power to jump the spark plug gap.  Electricity takes the path of least resistance.  So when poor secondary insulation reached a point of being less the the resistance across the plug, the ignition arcs to ground and the car misses under load, but idles and runs part throttle  okay.

In either case, the salt water drasticly lowers the resistance of the electrical leak, or poor insulation point, and the arc shows up at idle on a warm engine.

The salt water is a diagnostic tool.  But only spray it on the ignition system.   Just a small spray bottle will provide plenty of volume.

 

Just my two cents.. I like to check for spark leaks at night or darkened room, as it makes it easier to detect... just don't lean into anything... like a moving fan blade...

Looking at night works, if they are arcing at that time.  If not the salt water will help them show up.

thanx all for help. But my problem is now..... the gaskets for the Holley carb. I tought to buy a "set" but here in speedshop they have only a box of spares , all mixed together...My doubt is about the gaskets between the main carb center and the 2 blocks . (Between the blocks and the cowl houses it is more evident )
There are 2 different gaskets for main center - blocks : they are the same , fit the passing pins , but have 1 difference : where the power valve is located there is a small hole just above. One gasket seals that hole around to connect the "tubing" , the other gasket has a great cut away together with the hole for the power valve.So the "tubing" is open and free in the space of the power valve.Witch is to be used where ????

( There's only 1 power valve , on the primarys. On the secundaries there isn't even that treaded hole for the valve. )

Anybody knows about Holleys ???