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Old 08-26-2012, 08:49 AM
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chevyart
Senior Member
MASTER BUILDER
 
Join Date: Mar 2008
Posts: 173
Default hard filled sbc overheats real bad

ran my new 377 cu in chev(400 block) that is hard filled to water pumpholes.. i have a 69 camarp 3 core radiator and a summit electric water pump that kept my 355 cu in sbc cool at around 200 degrees max at the dragstrip(no hard filler in this block) asn engine was 525 horses. now running a pro built 377 cu in(400 block) sbc that is hard filed and has around 600 horses and it start overheating in staging lanes and burnout and at lights it up to a scary 240 degrees and at end of track i have to wait there ans let it cools down to 180 degrees and drive it back to pits and on this return it gets back up to that scary 240 degrees. the intake does not have provisions to run lines from front to back for cooling..... i know there are 3 tricks for cooling that MAY help. #! is to rung the cooling lines from front to back of intake(1 line on each side) #2 is to get a thick spacer that fits between intake and thermoshat housing and runs a line out of each side of spacer to the bungs on each side of the aluminum heads, with one being in back of head and one in front of head. and trick #3 is to drill and tap the sides of the electric water pump and run # 6 lines over to holes drilled above the hard fill(where water still runs in block) there, holes are drilled right at center of block( there are 2 exhaust valve above this point) and cooled water is circulated to there.. i am desperate to fix or help this cooling probles and will do all 3 things if necessary. any help would be greatly appreciated
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