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Horsepower TV 360
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SC397 View Drop Down
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Joined: Apr/30/2009
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Points: 5476 		Post Options Post Options   Thanks (0) Thanks(0)   Quote SC397 Quote  Post ReplyReply Direct Link To This Post Posted: May/05/2022 at 1:03pm
Good point.
BTW - That block is in your Commando now.  Nothing but the best for you my friend!
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70,71,72 AMXS View Drop Down
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Points: 339 		Post Options Post Options   Thanks (0) Thanks(0)   Quote 70,71,72 AMXS Quote  Post ReplyReply Direct Link To This Post Posted: May/05/2022 at 2:01pm
Gee... thanks..
Bruce in NW Ohio
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Mopar_guy View Drop Down
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Points: 4828 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Mopar_guy Quote  Post ReplyReply Direct Link To This Post Posted: May/05/2022 at 3:02pm
Originally posted by SC397 SC397 wrote:

I wonder if torque converter alignment has something to do with the excessive crank wear.

That is possible but unlikely. Torque convertor ballooning is most likely the problem. When a convertor is under speed, it balloons way more than most people think. If the brazing on the blades starts to crack, it gets even worse. Another possible but unlikely condition is there's not enough clearance between the crankshaft and the front pump so when the convertor balloons, it puts pressure on the back of the crank.

"Hemilina" My 1973, 5.7 Hemi swapped Javelin
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Points: 6882 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Trader Quote  Post ReplyReply Direct Link To This Post Posted: May/05/2022 at 3:43pm
Used to see this with Grand Wagoneer's, TH400's.
There was a shop jacking up the pressure so the transmissions would shift faster. Many didn't like the factory settings as they "felt" sloppy.
Other GM products in the area had the same fate.
The torque converters could handle 210 psi and the factory setting was something like 90 to 110 psi.
But the engine was designed for a thrust load of 220 psi. Add the surface area difference and bumping up the transmission pressure, anything above 130 psi on the transmission exceeded the GM engine spec.
Don't know the AMC thrust spec, but guessing that the engine Rick videoed had a TH400 behind it.
   
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SC397 View Drop Down
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Points: 5476 		Post Options Post Options   Thanks (1) Thanks(1)   Quote SC397 Quote  Post ReplyReply Direct Link To This Post Posted: May/05/2022 at 7:53pm
AMC Jeeps started using the 727 from 1980 until the bitter end.
All the above mentioned vehicles had 727's in them.
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Points: 6882 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Trader Quote  Post ReplyReply Direct Link To This Post Posted: May/05/2022 at 8:52pm
Something was wrong then.
You stated replacing the crankshaft rather then fixing. You can usually tell if the crankshaft, bearing or lack of oil was the cause. All have separate tells when caught in a running engine. 
What is the suspected culprit in your opinion?
You have more builds under the belt then anyone on this thread as far as known, so insight from your experience is extremely valuable.
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SC397 View Drop Down
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Points: 5476 		Post Options Post Options   Thanks (1) Thanks(1)   Quote SC397 Quote  Post ReplyReply Direct Link To This Post Posted: May/06/2022 at 8:16am
On the conservative side, this is what it would cost for me to build that engine and it does not include dyno tune time.

Horsepower TV 360 Parts Costs
Rod Bearings ACL 8B960A-010  $30.00
Main Bearings Sealed Power -.010" $102.00
Core Plugs $12.00
Cam Bearings Enginetech CC481 $30.00
Wiseco Pistons $560.00
K1 Connecting Rods $675.00
Comp Cam  $230.00
Comp Solid Lifters $270.00
Internal Oil Line $50.00
Cam Distributor Gear MSD-8007 $80.00
Timing set Milodon $82.00
Cam Button
Vibration Damper $335.00
Timing Cover  $167.00
Oil Pump Kit $35.00
GMB Water Pump $45.00
New Milodon oil pan $600.00
Pick up Screen $60.00
Edelbrock Heads $2,550.00
New valve Springs + labor for set up $330.00
New Rocker Arms  $385.00
Push Rods $110.00
MSD Distributor $405.00
Spark Plug Wires $61.00
Torker Intake Manifold $250.00
Adjustable Thermostat Housing $100.00
Summit 750 $395.00
Carb Spacer $120.00
Edelbrock Valve Covers $435.00
Breathers $92.00
Fuel Pump
Gasket Set Fel Pro $100.00
Dip Stick Tube $18.00
By Pass Hose & Clamps $12.00
Oil (10 Qts) Rotella, 2 pts Lucas Zinc Additive $70.00
2 Oil Filters $24.00
Gasoline $20.00
Stainless Bolts  $20.00
Primer and Paint $35.00
Spark Plugs $20.00
PCV Valve $6.00
Total in Parts $8,921.00
Total Labor $800.00
Total Machining $1,200.00
Grand total $10,921.00


Edited by SC397 - May/06/2022 at 8:47am
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BlackOpsOutdoors View Drop Down
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Points: 84 		Post Options Post Options   Thanks (1) Thanks(1)   Quote BlackOpsOutdoors Quote  Post ReplyReply Direct Link To This Post Posted: May/06/2022 at 10:39am
Originally posted by SC397 SC397 wrote:

No, he missed a lot of detail which he found out the hard way and some that may eventually bite him.
Oil pouring out of the PCV hose..  We all know that you need the steel valley pan and a baffle under the PCV valve.  No brainer.
He didn't show any of the detail in regard to correcting oil flow through the timing gear.
He used a aftermarket timing cover. Hopefully he got lucky and has a good one.
In my opinion, he "fixed" oil passages that didn't need fixing.
I would have scrapped that crank and found a different one.
Also, calling it a street engine with 10.75:1 compression ratio is a stretch.  I guess he assumes that 110 octane fuel is easy to find.
LOL, I pretty much knew the answer to this but I still wanted to poke the bear. I have read all of your build guides several times and this episode didn't match up. I prepped my block from your guide.
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SC397 View Drop Down
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Points: 5476 		Post Options Post Options   Thanks (2) Thanks(2)   Quote SC397 Quote  Post ReplyReply Direct Link To This Post Posted: May/06/2022 at 11:11am
You baited me!
And I fell for it...
I like you even more now.Clap
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BlackOpsOutdoors View Drop Down
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Points: 84 		Post Options Post Options   Thanks (0) Thanks(0)   Quote BlackOpsOutdoors Quote  Post ReplyReply Direct Link To This Post Posted: May/06/2022 at 12:33pm
Originally posted by SC397 SC397 wrote:

You baited me!
And I fell for it...
I like you even more now.Clap
You sure did LOL. These "budget" videos always kill me, guess they have a much larger budget than me.
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