This only happened to me once so far, and I had the car for about 3 years. If you insulate the cable, you tend to keep the heat in the cable, you have to defect it before it gets there. The spacer on the header tube is the right idea, just not big enough. A air gap between the pipe and the heat shield is whats needed. Look at the heat shield for a cat. and you'll see what I mean.
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93LXcopcarSOLD14.3@96 @ 4500ft 2.02 60ft on street tires.
my 67 ranchero NOT A 390 ANY MORE! 460! 3.70's cast manifolds, comp cams 262H, performer, 750DP 100K out of 79 F250
NEW(oct20/02)14.58@95mph 2.3 60 ft
corrects to:13.86@100
66 merc comet351w, isky roller 600 lift 268/260@.050, vic jr. 700DP, 5000stall, 4.56's c-4, 3400lbs with driver
12.3@110 @ 4000ft 1.69 60 ft
corrects to:11.69@115
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