ACCEL 4040 Spark Plug Wire Set 8mm SUPER STOCK GRAPHITE UNI, Yellow: Performance-boosting Ignition Wires for Enhanced Engine Efficiency Review

Note that you will need a crimping tool and lube. Also does not fit on the Ford coil (see photo). Durability and performance only time will tell.

Absolutely worst plug-in wires I've ever bought, you have to put them together which is a lot harder than the description, no level of professionalism is worth that nonsense.

You need to buy a cheap crimping tool they sell or buy some good connector wire crimping tools. Anything else will ruin the end connections. Take this into account when planning your expenses.

I used this on a 392 in my Scout with a Holley dealer. It comes with spade lugs for a Holley or Prestolite distributor. All wires were long enough to be properly cut and routed.

Doesn't fit my 1996 Silverado. Even if it says so in the description. This is a specialty/universal kit but I couldn't use it because the manifold ends didn't match my cap terminal. The coil wire insulation was also short.

The spark plug boots should have been angled on one side of the engine (351W) (I think it's my fault). All the caps touched the collectors, and 2 of them melted and shorted. I ended up swapping out the spark plug boots for my old corner kit. It took about 90 minutes to swap out all the shoes and S/P connectors.

They will cope with their task, good quality cables, but for some engines they are a little short. I have a Cadillac 472 in my Fleetwood, the wires were almost too short to fit the way I wanted but I was able to get them to work, they would probably work better for a small block. Also, they tend to slip off the spark plugs so I have to slide them back from time to time to reinstall them, but that may only be because the leads are a bit short.

I bought them because the silicone boots completely cover the spark plug insulators. Excellent for air-cooled engines where dust and dirt can form leakage paths through insulators. I installed them in an air-cooled VW and to my great surprise the engine seems to have more torque. The motor is equipped with a premium Bosch coil and electronic crossovers, so ordinary cables couldn't withstand the increased voltage? Whatever the reason, they worked very well.