Hello Ladies and Gents.
I am new to the forum, and new to Corvettes in General. I have recently picked up a 69 roadster, with a big block. It is numbers matching from the block through, but has Aluminium heads, and L-88 style manifold with double pumper.
The Dizzie was fitted with a Pertronix Ignitor II module, which the black smoke has unfortunatelyescaped from. I replaced it with points, then shelved the original dizzie and dropped an MSD kit in it, including the Digital 6 controller.
The engine had always had a bit of a miss (I have only had it about 3 months) and while fault finding this after the installation of the MSD, found that the 1 and 3 plug wires were melting on the headers (The car has aftermarket 'hooker' style headers and sidepipes).
I originally installed Eagle (good brand in Australia) 9mm leads, which cooked, then tried 45 degree boots - melted. tried 8mm Top Gun leads and today have tried some original GM leads a mate had. The leads which came out of the car with the dizzie are braided and are Accel, except for 1,3 and 4,( the hot ones) - these wereMSD. These leads were also showing signs of heat damage and breakdown
The only way forward that I can see is to try short plugs, but need to investigate where to buy them... Is there such a thing as a ceramic boot? Has anyone had this problem before?
Thanks guys

[IMG]local://upfiles/4399/381F3E3140E940B3A9ED859F7E94B83F.jpg[/IMG]

 

Welcome to the forum.Very nice ride.Those are the pipes and headers I will be putting on my 75vette when I put the big block 454 in,so I too will be watching for your answers.I had them on my 76 with a small block years ago and never had your burning problem.(small block tubes are smaller).Hope you enjoy the forum,and your car.Talk at ya later.

 

I have seen heat shieds on small blocks, but I'm new to BBs. I would think you can get them for BBs too.

 

perhaps you can locate some cerramic wire shields like used on the old hemi's. Year one may have some. I have seen them latly and will try to track them down again. Cheers.

 

Accel makes some "extreme heat" plug wires, available in HEI and non-HEI:

http://www.lmperformance.com/1666/1.html
http://store.summitracing.com/egnsea...115+4294908189

bill.

 

Also, ceramic booted wires from Jacobs:

http://www.cbsperformance.com/jacobs.shtml
http://store.summitracing.com/partde...p;autoview=sku

bill

 

Here are some right here.


http://cgi.ebay.com/ebaymotors/Chrys...71626580QQrdZ1

 

Thank you all very much for your input, I found a local supplier of the Jacobs ceramic boots (Thanks wrwalke), will reply here in a few days after they are delivered / installed / tested.
Still have concerns over whether I can actually fit them on, but we will see.
Thanks again, and Happy Trails.