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HEI Distributors

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Jethro:
Hey boy's I've been experiencing a miss at high rev's and under load and am sure it's got to do with the original dizzy so I'm thinking of ordering one of these HEI Distributors.....

http://www.ecklers.com/corvette-hei-distributor-conversion-1962-1975.html?crosssell=Product_Upsell

Has anyone done so before or am i better to get a local mechanic to supply and fit ?

bonnevista:
I wouldn't be hard.  As well as the new dizzy, you'll also need new spark plug leads (HEI leads are different to points) and a way of supplying a constant 12 volts to it.  
Currently, you would have your power to the distribuor go through a resistor to drop it down to around 9 volts.  This increases the life span of the points. With HEI, you need 12 volts constantly.
You'll also need to set your spark plug gap to 0.045 instead of the current (I'm assuming) 0.035.
I'll be dropping a new engine in my car in a few weeks and I'm going from points to HEI.
I'll be addressing the voltage situation by having the resistance wire going to a relay and then have battery voltage supply current to the dizzy via the resistor.      

Jethro:
So Chris,

You buying local or USA ?

bonnevista:
I imported a complete and fully recoed 455 in the US a few months ago.  Mick and Yvette Donaher (Mick's Muscle Cars) looked after the shipping for me.
The engine looks great sitting on the floor of my garage for the last 2 or 3 months.  I had planned to install it during the last school holidays, but I had to drive to Sydney 3 times and the barge is the only car I own, so I'll be planning to do it during the school break coming up in 2 weeks - unless of course, I end up going somewhere else.  I may end up driving to Melbourne at the end of the first week of the hols, so I still may have to postpone the installation again.
I'll get done - sooner or later.  I'm just grateful the old engine still runs.  I know it still runs because of all the oil it consumes!!    

sms777:
G'day Jethro,
Did you forget about me? :rol:
You do not have to go to Ecklers to buy a dizzy that was made in China, you can buy the same here on Ebay for $70. I am serious.
I have used them before, the last one simply exploded while driving along. You will find one out of a thousand that may work well for years but 90% of them garbage.
There is a new dizzy on the market made by Professional Products.
I have used these billett dizzys in six of my engines in the last 12 months and they are superb quality and they half the size of the HEI which can be a bonus in a Corvette.
The website is www. professional-products.com
You want the Powerfire distributor part#3000
They are available locally, i can get you one for $295.00

Cheers, Chris.  

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