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Old 09-29-2011, 07:16 PM
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chevyart
Senior Member
MASTER BUILDER
 
Join Date: Mar 2008
Posts: 173
Default cooling a 400 sbc block

i have a 377 cu in sbc (400 block), professionally built around 400 hp.. block is filled to the water pump hole level. previous owner(my buddy) ran alcohoil, so there were no coolikng issues. i am going to run racing fuel. i am concerned about cooling this nice engine. it has aluminum heads(brodix). it has a victor jr intake, so there is not the 4 port water port setup to help cooling and i really dont want to get the newer intakes with the 4 water ports. my block had 2 holes drilled up near the top of block, just above the cement filler upper level, right between the two center cylinders(on each side) i can tap- ,into my electric water pump on each side and run water lines from the pump to these 2 holes(fittings) to get cool water into the center of the block. i think this is an old stock car cooling trick.also i can bur a spacer about 1 inch thick with two tapped holes)(Jegs) , that mounts between the thermostat hole in the intake and the water outlet piece( wherte radiator hose connects). these 2 hoses would run to a tapped hole in the rear of my head on one side and the front hole on the other side. these holes are cast into the heads and plugged when you buy them. this setup gets the hot water out of the engine faster into the radiator(i think). could any of you guys tell me if i do one or both of these options would it help a potential overheating problem. i have a good radiator ane electric water pump, but i just dont want any overheating thanks art
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