Pro Stock engine information

[DavidM]

I would like to ask a question or two about these engines:

Pro Stock.jpg

I took this photo at the 1978 NHRA Gator Nationals. By the fender's color you may recognize this as Dyno Don's (#1) car.

Was this about the time that some of the engine builders were using furnace-brazed (-in) cylinder walls? Was chrome-moly steel ever used? Who was doing the furnace brazing? C. J. Batten?

[grandsport51]

According to linked article it was bill coon for Dyno Don and others
http://www.351c.net/wiki/Magazine%20Art ... 201978.pdf

[DavidM]

According to linked article it was bill coon for Dyno Don and others
http://www.351c.net/wiki/Magazine%20Art ... 201978.pdf

Thanks for that article, grandsport.

Do you or does anyone know if Bill Coon farmed out just the oven work?

I, also, just noticed a positive crankcase ventilation valve on Dyno's engine.

[user-9274568]

Not sure who was doing it back then but I will add it's an art. You can jack one up fast if you don't know what your doing!

Just had these done recently.

[engineguyBill]

According to linked article it was bill coon for Dyno Don and others
http://www.351c.net/wiki/Magazine%20Art ... 201978.pdf

I, also, just noticed a positive crankcase ventilation valve on Dyno's engine.

I think what you are seeing on this engine is a pan evacuation system.

[DavidM]

According to linked article it was bill coon for Dyno Don and others
http://www.351c.net/wiki/Magazine%20Art ... 201978.pdf

I, also, just noticed a positive crankcase ventilation valve on Dyno's engine.

I think what you are seeing on this engine is a pan evacuation system.

I do see a hose going to the header. What do you think about the hose that looks like it is plumbed into the bottom of the plenum?

pcv.jpg

[tenxal]

Not sure who was doing it back then but I will add it's an art.

Back in the late '70's early '80's, High Speed Salvage in New York did most of the Pro Stock blocks and heads. I've seen the sectioned AMC heads, the Cleveland heads and even one very famous MoPar LA motor that had the lifter valley cut out and replaced so the lifter angle was that of a small block Chevy.

[pamotorman]

crosley engines had a sheet metal copper brazed cylinder block. high speed salvage also welded 2 SBC together to make a V-16

[Kevin Johnson]

I do see a hose going to the header. What do you think about the hose that looks like it is plumbed into the bottom of the plenum?

Might be used to create an artificially strong signal to counteract the venturi issue seen in Jon's sim.

[DavidM]

I do see a hose going to the header. What do you think about the hose that looks like it is plumbed into the bottom of the plenum?

Might be used to create an artificially strong signal to counteract the venturi issue seen in Jon's sim.

Jon's (Kaase)? sim(ulation)? Is this something I can view?

[Kevin Johnson]

[/quote]

viewtopic.php?f=1&t=43308#p550814

[DavidM]

Thanks, Kevin.

[pamotorman]

I, also, just noticed a positive crankcase ventilation valve on Dyno's engine.[/quote]


I think what you are seeing on this engine is a pan evacuation system.[/quote]

I do see a hose going to the header. What do you think about the hose that looks like it is plumbed into the bottom of the plenum?

pcv.jpg

[/quote]
at low RPMs there is little vacuum draw from the headers so they use engine vacuum till the engine RPMs are up and the header evac works.

[Kevin Johnson]

at low RPMs there is little vacuum draw from the headers so they use engine vacuum till the engine RPMs are up and the header evac works.

Man, that is not as Kool.

[DavidM]

at low RPMs there is little vacuum draw from the headers so they use engine vacuum till the engine RPMs are up and the header evac works.

Man, that is not as Kool.

Yea, that takes the black magic out of it, but it does make the most sense.

Now, back to the question I was originally leading up to.

I had the fortune of standing in on a conversation that Jon Kaase was having. He mentioned that they had recently tried titanium connecting rods for the first time (I think there was an issue, though). He also mentioned chrome-moly-steel sleeves furnace-brazed into the engine. I have always wondered how that could work without having galling issues (the steel rather than iron sleeves)?