What is engine bluepprinting?
I have a 377 that builds oil temps up to 300* with 220* H20 (yes it;'s a race motor)
What is blue printing?
Will they check and write down all the clearences and make sure everything is straight?

It's time to freshen the motor but I don't want to use this block/rot assembly again unless this oil temp issue can be solved.

Thanks

 

When you blueprint an engine,you check ALL the sizes on tear down and get the machine shop to adj.them all to a given size.Main,rod,cam,piston fit.You get them all as close as possible for each area and I am talking no more than .0002 difference if possible.This also includes rings and deck height.Then you move to the heads and do the same thing with the chamber's,springs and valves.You finish it off with torque values on everything being the same.
That's how I do it and was taught to do it in the '60's.Hasn't failed me yet.Different builder's have different sizes they like to see in different area's.A good rule of thumb is to follow the manufacturer's size limit's and you won't go wrong.

 

Your engine is based on a "blueprint", but during the casting process things can go wrong. This is the sort of stuff that's meaningless for daily drivers, but important for max power.

Things like making sure the cylinder and lifter bores are square and the cam and crank journals aligned.

The cost will vary by how much you want to do.

At the very least you should always line-bore and zero-deck.

All this makes power in two ways:

1) It eliminates many of the sources of excess frictional losses in the engine, and;

2) When you have each cylinder and combustion chamber as identical as you can get them, you can tune "closer to the edge".


You should discuss this with your machinist, who can get into details with you, especially as regards cost.