Use _copious_ quantities of silicone gasket maker around the coolant ports and I mean goop it! I had 2 such leaks before I realized what a huge part sealer plays in relation to the gasket. Make sure you crisscross when you bolt the lower down. I always found torque specs to be very conservative. Ignore them and get the bolts in there as tight as you can. Tighten them _carefully_ once the engine is warm (I've snapped off boltheads tightening hot parts). I saw this behaviour on my valvecovers when the bolts would back off on the first warmup cycle following a reassembly.
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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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