My guess is the motor was replaced, I watched them pull the motor out and set it in the back of my pick-up. If I hadnt gotten it so cheaply I would have taken it back to them. But it goes to show that in a junkyard things are not a given.

 

i mean how much would it be for me to have it sonic checked? thanks

 

the machine shop did the block to a 4.045 finish so i need custom pistons. i'm looking about 790 from diamond for pistons and rings. anybody know of any cheaper? Arias wants 86 a piston, but i can't wait 3-1/2 weeks to have them done. i don't have that kind of time. anybody seen anything?

 

Call Probe Industries in California, they may be some cheaper.
It will probably be 100-150 to sonic check if somebody in your area does it.

 

I've bought custom pistons from Wiseco before for $600.

 

the only sonic checking capable shop in my area is a shop that builds motors for nascar's busch series....they don't answer their phones for outsiders either. lol it's probably really expensive too......so am i that much better off to have another .015" of wall?

 

Ya may not have enough now and .015 may make the difference.

If ya ever spent the time,money and effort on one and then have it run hot the first time ya run it or worse have it cave a cyl wall, you will know what I am talking about. Been There.

 

the block ran strong and cool at .040 so i think i will be safe at .045. the block was sem heated twice on accident (230 degrees) otherwise it ran cool all the time with no fans on. the block was true and straight when taken apart, just lightly scored to my dislike.
btw, who did u conact about the wiseco pistons???? was this with or without rings?

 

Has anyone ever considered, or done a half fill of block cement after doing a .60 over bore? It seems like the Lt-1 would be a good candidate for this because of the cooling system it uses. Input?

 

i wondered the same thing, but ki want to retain all abilities to keep cool. input welcome

 

It seems like with a half fill it should keep cool. Probably a bold statement but.....Imho, a .60 over bore with a half fill and a 160 degree thermostat will probably stay just as cool as a stock engine....In the end the engine temp is "supposed" to be regulated by the thermostat.

 

true, if the cooling system can keep up. with the thermostat open, it's all up to the abilities of the cooling system.

 

I know of a few .060 over LT1's that run very well.

As for block fill... I'd fill it to the bottom of the freeze plugs. Yes, the temps will go up a little... oil & water. Synthetic oils won't have a problem though. If you're an auto-x kinda guy, you might want to look into an oil cooler.

-Mindgame

 

factory equipment Z28 package #2 equips me with an oil cooler already.

 

would hard block filler help out in supporting the walls enough at the freeze plugs?