Thread: 396 bought 4th time cranked water in oil

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Bought a 396 10.25 to 1 compression new heads piston bored 0.30 over flat top pistons eldelbrock intake ..... Gonna sell bought a 454 crate but don't know wat is worth it is 70 stamped can some one help me out would it be best to sell whole or part out

First, welcome to CHR.

Your message is confusing. Are you saying that your 396 got water in the crankcase on the 4th start after you got it, so you bought a new 454 crate motor; now you want to sell the 396 and want to know what it's worth, not knowing where the coolant is coming from? Help us understand what you're asking here.

Best to find out what the source of the leak is first. I'd think if the block or a head is cracked it would be worth more to part it out, salvaging the parts that are still good. Maybe you'll find the leak is something simple/repairable. Then it's obviously worth more. Need more info.

I bought the motor and warranty ran out on me while finishing body work when we got it in fired it up for the first time got it in time(day1). (Day 2) fired back up with exhaust on started tuning carb the fourth time we fired it the oil had water in it checked heads r good (note car was never moved just sitting there this being said motor was cold so it has to be a big crack)

If you have time, then parting it out should bring more return.

If it has new valve guides they are pressed in through a water jacket in the heads. I would check there first. Especially new heads. It is not uncommon. If they or one is leaking alumaseal will usually stop it.

If I was to tear it down and take just the block to get it checked what's around about cost

are you saying that it froze up during cold weather??????

could be many things heads bolts .deck is not blind so sealer must be used on head bolts .like said ex guide are wet so if heads were on a engine that bent a valve guide may have been replace head could be crack were wet guide seats and seals or wrong guide in the ex side there two guides for guides iron heads. guide drove in the worng way. intake leak

No was in a heated garage just started getting water in the oil no weird sounds while running or anything.

Was talking to a old drag guy and he said that when the motor was bored 0.030 over its possible cracked in the cylinder next to the water journey. (Thoughts)

Was talking to a old drag guy and he said that when the motor was bored 0.030 over its possible cracked in the cylinder next to the water journey. (Thoughts)

no they did not crack it when they bored it most bbc walls are around 200. thick so .015 a side of the bore is not going to weaken it. but it could of been cracked then bored? yes but the boring bar cutting that bore makes a different sound when its getting bored . should of seen it as well. the iron dust lays out the crack in the bore

if you have a crack in the bore all is not lost i fixed many blocks with a sleeve done right it is a very good repair. i have blocks out there making over 1000. hp with out a power add so 1500 hp with a iron fixed block there is some rules to repair the block the rigth way

I appreciate all the info will be tearing it down next week n checking every thing as I go