block filling,any luck with it?

[jerryms]

i have a 388 small block chevy i know i'm pushing the hp rateing of a factory block of 690 hp at 7500rpm after 65 passes 1 cylinder cracked this is .060 over 350 block.after the resleeve im thinking of moroso block filler fill it to the bottom of freese plugs will this help from cracking agin?

[johnracer]

Just to the bottom of the freeze plugs will help a little, but if it's not a circle track or street deal, I'd fill it to the bottom of the water pump holes. You should do it before the sleeve install or at least before the final bore....

[zipper06]

Like johnracer X2

Zip.

[olds48]

Does block fill cause any heating problems??Even if it's drag only?

[prostreet1972]

can you put block filler into a motor that is already together? Just wondering for some extra insurance.

[johnracer]

can you put block filler into a motor that is already together? Just wondering for some extra insurance.
Not recommended. When the fill sets, it may change the bore size a little. Most machinists will final hone a little looser to compensate for the different expansion rate.....

[dparker]

It helps just as described above. Just remember it won't cool as well or cool down as fast. Kinda like medicine there is side effects.
good luck

[zerotolerance]

i run a 388 sbc also with the block filled to the bottom of the water pump inlet i run a meziere eletric pump and no t stat, i cant get my motor to run above 160 i use my motor alot on the street and its 15.5:1 compression. if i do let the temp run up 180-90 not using the fan, it does take longer to get the temp down back around 160. most of the time i usualy dont use the fan she just runs 160 cruising around. hope this helps your decision.

[kwkracing]

zerotolerance where do yo u drive this car? In alaska? Antarctica? Theres no way you can drive a block filled 15to1 motor around and never worry about over heating unless it was in a boat getting 20 degree water for cooling. lol... Im curious.

[dparker]

Maybe on alcohol.

[Tod74]

i run a 388 sbc also with the block filled to the bottom of the water pump inlet i run a meziere eletric pump and no t stat, i cant get my motor to run above 160 i use my motor alot on the street and its 15.5:1 compression. if i do let the temp run up 180-90 not using the fan, it does take longer to get the temp down back around 160. most of the time i usualy dont use the fan she just runs 160 cruising around. hope this helps your decision.

:?

[bjuice]

have you done an A-Z cost analysis of what this is gonna cost you to have this cracked blocked re-sleeved
( time taking out engine,tearing down,machine work etc....)

Sorry but i just cannot see you coming out ( $$$$ ) repairing damaged goods when you can Buy a FACTORY ready to go un-damaged block pretty reasonable..

if you had a cracked Dart little M block or something like that i could understand repairing.

EXAMPLE:...Not ready to go but cheap enough.
http://www.racingjunk.com/post/1371376/1973-350-short-block.html

JMO. :roll:

Brian

[zerotolerance]

zerotolerance where do yo u drive this car? In alaska? Antarctica? Theres no way you can drive a block filled 15to1 motor around and never worry about over heating unless it was in a boat getting 20 degree water for cooling. lol... Im curious.

hey guys im not making this stuff up i live in upstate ny near albany. ive had this combo running now since july and in the heat of a nice summer day she runs 160-180 i have not been able to get it any hotter than that unless i dont use the fan. i can cruise with no fan and shes great i snap the fan on when coming to a light and she will sit right there hanging around 180 as soon as i get cruising i shut the fan off and she will come down to 160-170. now that is it getting cold here i had the car out last weekend and if i remember it was a chilly night about 40 for the life of me i couldnt get any temp in the motor she ran about 140 i even turned the water pump off and ran around to try to get some temp in her but as soon as i turned the fan on again she would go right back to 130-140. the motor is in a 73 nova has a griffin radiator with two 1" cores (i even have a huge tranny cooler in front of the radiator) meziere eletric pump 15.5:1 and i run it on c-14 vp fuel. the carb is a pro systems 950. heres the kicker witch i think my be helping me is, i do not have inner fenders in the car. another thing i also spray 2 stages on this setup. if there is any further questions i will be more then happy to fill you in. i just put my car in storage its snowing here now but i will post some pics of my setup this week so you guys can see.

[mopar1962]

I would only go around 3 inches below the freeze plugs using hardblock so ya have a lil space still too cool the engine. 3 inches below will still tie the cylinders together and still allow cooling, race only ,take care