357 (350 - .40 Over) Build Questions Etc

[Mr Diesel]

I think the only thing that makes them high volume is a different impeller. Castings would remain the same.

Edit: Removed comments and link for electrical cut-off switch and put it into the correct thread.

[VileZambonie]

The stock water pump circulating the coolant is what you need. Let the cooling system do its job as designed. Until the thermostat opens you are circulating it through the bypass circuit. If you wanted to increase cooling capacity use the big block radiator. What would you gain with (high volume) ?

[Mike81K10]

Thanks VZ! Mr. Diesel, I think you are correct in that the only difference is the HV has a slightly larger or different impeller in it.

I am beginning to think I should have bought a complete engine fully dressed with all accessories. It would have been about the same price or perhaps less expensive. Buying a short block and completing it really costs.

[VileZambonie]

With the quality of things these days you're better off. Plus you can say built, not bought.

[JohnnyPopper]

Your Thermostat isn't going to open up any further...

Unless they make a HV unit 

Be my luck that someone does...

[Mike81K10]

I bought a:
Stant Superstat ® Premium Thermostat , 180 Degree
The description of the thermostat says:
Premium Superstat thermostat.
Uses high venturi for maximum cooling capacity during high temperature, high load oepration.
25% larger piston in diameter that delivers 1 1/2 the power of standard thermostats.
Stanless steel flange is burnished to a bright finish for stress relief and added corrosion resistance.
Thicker flange.
Fit type: Vehicle Specific

[JohnnyPopper]

I bought a:
Stant Superstat ® Premium Thermostat , 180 Degree
The description of the thermostat says:
Premium Superstat thermostat.
Uses high venturi for maximum cooling capacity during high temperature, high load oepration.
25% larger piston in diameter that delivers 1 1/2 the power of standard thermostats.
Stanless steel flange is burnished to a bright finish for stress relief and added corrosion resistance.
Thicker flange.
Fit type: Vehicle Specific

Curious

Wiki: "In inviscid fluid dynamics, an incompressible fluid's velocity must increase as it passes through a constriction in accord with the principle of mass continuity, while its static pressure must decrease in accord with the principle of conservation of mechanical energy (Bernoulli's principle). Thus, any gain in kinetic energy a fluid may attain by its increased velocity through a constriction is balanced by a drop in pressure".

 

[Shifty]

I bought a:
Stant Superstat ® Premium Thermostat , 180 Degree
The description of the thermostat says:
Premium Superstat thermostat.
Uses high venturi for maximum cooling capacity during high temperature, high load oepration.
25% larger piston in diameter that delivers 1 1/2 the power of standard thermostats.
Stanless steel flange is burnished to a bright finish for stress relief and added corrosion resistance.
Thicker flange.
Fit type: Vehicle Specific

I bet your truck will do wheelies now...

[Mike81K10]

Just hope with the water pump and thermostat, it wound over heat. My brother has 2 cars that will pull the front end off the ground. A 78 trans am race car and a 74 firebird daily driver.

[Mike81K10]

Worked on the engine some today. Installed the heads and wanted to get the pushrods measured for the proper length needed. Could not complete the pushrod measurement because my adjustable pushrod measuring tool appeared to be too long. The minimum length was the same as the OEM pushrod and I did not think it would be shorter.

I went ahead and put the intake manifold and valve covers on to see how they would look. I had to order new gaskets and they will not be in till Monday. The gaskets I had were not what the AFR Head manufacturer suggested. Still have to figure out my proper pushrod length and order the correct ones as well.

I removed my engine from the engine stand and put it on an engine cradle. Seems safer since all that weight is not being put on the back of the engine with four bolts for an extended time. Beside that, it is easier to move around and takes up less room. This is the first time I have ever used a cradle.

[VileZambonie]

4 bolts are fine as long as you aren't doing anything crazy. It's coming along!

[Shifty]

Looks good Mike!  Do the valve covers clear the power brake booster?

[Mike81K10]

Don't know yet!

[Mike81K10]

Strange, Was looking at was the list price of my 81 K10 when new, it was $7,920.00. The engine I am building for it cost more than what the list price was for my truck when new.

[Shifty]

Yup, different times, but also extra possibilities, like a new block, not an over-bored veteran that needs a lot of machine work to make true.