Filled block

[mommasboy]

This is probably going to be pretty stupid, but with the new motor i am going to run a short filled block. For those of you who dont know what that is, its when you are doing the boaring and decking of the block you pour cement into the water jackets of the block, a short fill comes up just past the bottom of the cylander, med. fill comes up just shy of the bottom of the water pump holes, and a large fill fills the whole block and the water only runs through the heads. A short fill should only cost me about a gallon to a gallon and a half of water so i hope ill be ok with the cooling. Anyone have a filled block here? How does it cool?



Chris



91\' S-10,

383 Stroker, World Products heads, Stealth intake, NOS 150-250 shot,Jethot coated Longtube headers, 3\'\' all the way back. 27x11.5 Hoosier slicks.

[Mike]

Curious of the gain from this?

[wickeds10]

my 327 is filled and it heats up fast i wouldnt recomend it for street use the only thing it does is stop the cylinders from moving if u dont have a lot of power i wouldnt doit at all

[mommasboy]

The filling gives you bottom end of the cylanders alot more strength when making alot of Horsepower.Plus it kinda webbs the mains together to add more strength too. On motor it will probably make about 500 and on the Nitrous it should make about 700hp and well over 750+lbft. So i was told that this would make a good addition to the motor when spraying the n20.... Oh and wicked, how far is your block filled?

[bohn333]

I have never heard of this before. I have taken alot of metalurgy classes in college. And i have been an enginneer for 5 years now. Think about this for a minute. Blocks are cast and when heeted hot enough will crack. if theres no coolant in the bottom of the block and being cast, your motor will become really brittle awful fast. The factory engineers put those water passeges there for a reason. If this is a motor that will only be run for about 10 seconds then fine go for it, But i see no way that this could be good for a engine. But hey i could be wrong.

[my454s10]

i sure would not..i have seen it in a pure race motor only but never in a street motor...the race motor is only ran for about 60 seconds with the burn out ..the run and returing to the pits...a stree motor will burn up in about a mile or so...

[91slammins15]

There is an article on filling the water jackets in the latest issue of hot rod magazine(orange camaro on cover). gives good how to and reasons for doing it.

[wickeds10]

its half filled like u sayed and its not a street motor i wouldnt doit to a street motor i would get the motown block for a street motor thats what i use for the street and u can take it up to 455 cubic inches if u want to

[knudsonm]

The block filler has nodular cast iron in the binding matrix, so it has a heat expansion coooeficient equal to the cast iron in the block. According to all of the things I have read and heard about it is it causes some cooling problems in street driven vehicles because it acts like a heat sink and doesn\'t release it\'s heat very readily. If you are only going a 1/4 mile at a time it is a great way to strengthen the block. For a street/strip motor you might be able to do a partial fill but don\'t piss and moan about cooling issues.