Come to think of it....this all started when I got my offroad bassani pipe installed. The only difference is no cats. Is it possible that the overheating described in general about piping smog pump air into the back of the heads is taking effect with the reduced backpressure? The headers seem instantly super hot when the car is started since the xpipe install. Since there was no checkvalve, I think exhaust simply used to gush out of the tube before and out the airpump but now there is positive flow of air into the heads. Am I getting anywhere with this line of thinking?
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91 GT Carb conversion, holley 600 double pumper, edelbrock performer intake, FMS "C" drop springs, march 1000 underdrive pullies, crane 1.7 roller rockers, GT-40P headers, bassani x pipe, american thunder catback, FMS 4.56's, msd aL6, trunkmount battery, A/C eliminator kit, 3000 stall tci streetfighter, AOD with transgo kit, A+ servo, 300M hardened lockup shaft, kevlar bands and 28,000 gvw trans cooler, 3 core radiator, 300 lbs stripped with a full interior
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