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Discussion Starter · #22 ·
Really?
We've been running those types of clearances. Typically .0022" mains, .002" rods on our work, street and performance engines up to over 500 hp for a decade with no issues. Run 5 or 10 w 30 oil and reduce bearing leakage and increase oil pressure.

If one is running at high RPM, running NOX or Boost then these require a difference calculus. More clearance, viscosity and oil pump perhaps.

The one size fits all .003" mains and .0025" rods is BS and usually results in low idle oil pressure warm.

As a side note I've been running .0017" mains and rods on my 570hp 460 powered LTD for over 10 years.
35 hot idle and over 60 hot at RPM. This 0 decked OEM short block was supposed to blow up years ago...

Snug bearing clearances require good machine work. ei minimal taper.







Scotty J. "AKA" The "Mad Porter"
"EMC 2006" 3rd place finisher
Ported BBF iron head specialist & Aluminum heads from all sources.
Custom ground cams
See our products in the Vendor for sale section
Customized crate engines
ParklandAutoMachine.com
R-H-P.biz
"Parkland Performance Auto Machine" Formerly RHP
(253)-988-6648
Parkland Auto Machine
I'm going to have to meet you some day I live not to far from your shop would love to see the LTD that's the only car my dad ever drove anything else his shoulders would be to wide to fit :LOL: now he never had a Ltd that made anything over 360hp so seeing one like yours making over 400 would be a blast. Lol. And like you I'm happy with .002 bearing clearances.
 

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Holy sh*t, has it been that long? I remember when you first got the car and started the build :D. It started out as a 13.99 goal, didn't it?
The goal was 12.99. It ran a full second better.








Scotty J. "AKA" The "Mad Porter"
"EMC 2006" 3rd place finisher
Ported BBF iron head specialist & Aluminum heads from all sources.
Custom ground cams
See our products in the Vendor for sale section
Customized crate engines
ParklandAutoMachine.com
R-H-P.biz
"Parkland Performance Auto Machine" Formerly RHP
(253)-988-6648
Parkland Auto Machine
 

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Discussion Starter · #24 ·
The goal was 12.99. It ran a full second better.








Scotty J. "AKA" The "Mad Porter"
"EMC 2006" 3rd place finisher
Ported BBF iron head specialist & Aluminum heads from all sources.
Custom ground cams
See our products in the Vendor for sale section
Customized crate engines
ParklandAutoMachine.com
R-H-P.biz
"Parkland Performance Auto Machine" Formerly RHP
(253)-988-6648
Parkland Auto Machine
What year is the car that's pretty impressive for a Ltd.
 

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What year is the car that's pretty impressive for a Ltd.


1973 2 door. 4460 race weight with my skinny *** in it.

The original build thread is in the car build section.


While I have the parts to build about any amount of power I want sitting on the shop's shelves I am quite happy with the Old Broad as she is for now.



Chassis dyno pull:









Scotty J. "AKA" The "Mad Porter"
"EMC 2006" 3rd place finisher
Ported BBF iron head specialist & Aluminum heads from all sources.
Custom ground cams
See our products in the Vendor for sale section
Customized crate engines
ParklandAutoMachine.com
R-H-P.biz
"Parkland Performance Auto Machine" Formerly RHP
(253)-988-6648
Parkland Auto Machine
 

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Registered
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Really?
We've been running those types of clearances. Typically .0022" mains, .002" rods on our work, street and performance engines up to over 500 hp for a decade with no issues. Run 5 or 10 w 30 oil and reduce bearing leakage and increase oil pressure.

If one is running at high RPM, running NOX or Boost then these require a difference calculus. More clearance, viscosity and oil pump perhaps.

The one size fits all .003" mains and .0025" rods is BS and usually results in low idle oil pressure warm.

As a side note I've been running .0017" mains and rods on my 570hp 460 powered LTD for over 10 years.
35 hot idle and over 60 hot at RPM. This 0 decked OEM short block was supposed to blow up years ago...

Snug bearing clearances require good machine work. ei minimal taper.







Scotty J. "AKA" The "Mad Porter"
"EMC 2006" 3rd place finisher
Ported BBF iron head specialist & Aluminum heads from all sources.
Custom ground cams
See our products in the Vendor for sale section
Customized crate engines
ParklandAutoMachine.com
R-H-P.biz
"Parkland Performance Auto Machine" Formerly RHP
(253)-988-6648
Parkland Auto Machine
On a 3” main journal I shoot for .0023-.0025 and .0021-.0022 on a 2.5” rod journal, not a pro only build for myself and a few friends. I haven’t had issues with low idle pressure but the next one could be the one.
 

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Your oil is going to warm up and thin out. Oil pressure will drop.

RUNNIT !!!








Scotty J. "AKA" The "Mad Porter"
"EMC 2006" 3rd place finisher
Ported BBF iron head specialist & Aluminum heads from all sources.
Custom ground cams
See our products in the Vendor for sale section
Customized crate engines
ParklandAutoMachine.com
R-H-P.biz
"Parkland Performance Auto Machine" Formerly RHP
(253)-988-6648
Parkland Auto Machine
Hey guys, There seems to be a lot of discussion on the forum regarding cam start up and break in procedures with the 460s. Are these engines especially prone to cam wiping issues? In the olde days (misspelling intentional). We just built ‘em and went (not 460s).
Towed our H/MP 300” Ford Six Maverick from NJ to Gainesville for the ‘75 Gators with a new never run engine and a new never run General Kinectics flat tappet cam in it. Fired it up waiting in the tech inspection line, torqued the head, set the valves, and dialed in the timing. Pulled into the pits, drove it to the staging area for a time shot, and did our usual 7K launch with 7K shift points to break it in. In eight years of racing with probably 40-50 rebuilds and just normal retorquing and valve/timing checks we always went full blast in the first pass and never once had a cam or lifter failure even with our later ridiculous Howard billet roller. Genuinely curious to understand the peculiarities of the 469 if I ever decide to build one.
 

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Discussion Starter · #28 ·
1973 2 door. 4460 race weight with my skinny *** in it.

The original build thread is in the car build section.


While I have the parts to build about any amount of power I want sitting on the shop's shelves I am quite happy with the Old Broad as she is for now.



Chassis dyno pull:









Scotty J. "AKA" The "Mad Porter"
"EMC 2006" 3rd place finisher
Ported BBF iron head specialist & Aluminum heads from all sources.
Custom ground cams
See our products in the Vendor for sale section
Customized crate engines
ParklandAutoMachine.com
R-H-P.biz
"Parkland Performance Auto Machine" Formerly RHP
(253)-988-6648
Parkland Auto Machine
Pretty darn cool my dad had two 1973 but they were 4doors my grandma had a 73 exactly like that green one would be pretty darn funny if it was his old one he kept pretty good care of it but I believe the interior was green to way way to much green. Lol
 

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Discussion Starter · #29 ·
Hey guys, There seems to be a lot of discussion on the forum regarding cam start up and break in procedures with the 460s. Are these engines especially prone to cam wiping issues? In the olde days (misspelling intentional). We just built ‘em and went (not 460s).
Towed our H/MP 300” Ford Six Maverick from NJ to Gainesville for the ‘75 Gators with a new never run engine and a new never run General Kinectics flat tappet cam in it. Fired it up waiting in the tech inspection line, torqued the head, set the valves, and dialed in the timing. Pulled into the pits, drove it to the staging area for a time shot, and did our usual 7K launch with 7K shift points to break it in. In eight years of racing with probably 40-50 rebuilds and just normal retorquing and valve/timing checks we always went full blast in the first pass and never once had a cam or lifter failure even with our later ridiculous Howard billet roller. Genuinely curious to understand the peculiarities of the 469 if I ever decide to build one.
Hydraulic flat tappet camshaft and solid flat tappet camshaft need to be broke in at first startup on any engine these days must run them at 2000rpm for 25 to 30 minutes I know back in the day when I was a little kid my dad never broke in a cam he would just put in a new cam and lifters start the car or truck let it warm up and go can't do that with what we get these days do what they tell you and be happy.lol
 

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Discussion Starter · #31 ·
It seems like a lot of the issues with flat tappet cams centers around the steel used or the depth of the heat treat on the cam lobe or lifter or both.
Well yeah I guess maybe. maybe. not there's other reasons that play a big part one major one is people go and buy a cam and lifter set because of the big numbers on the box and just slap them in a bone stock engine without changing valve springs and check install hight so on and do forth I wiped out to cams in a Chevy small block back in the early 90s for doing that very thing Yung dumb and you know the rest after taking the engine out and having a set of cylinder heads rebuilt and having proper valve spring install hight I never did have another cam go bad in that engine got to remember the oils they make these days suck for older engines...... And the EPA knows it trying to basically squeeze out the old dogs from being on the roads they will eventually get there way but luckily most of us won't be above ground by that time.
 

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Iron flat tappet cam blanks are the same hardness throughout. All / most are CWC and made in Mexico.
Though they can be nitride hardened it is cost prohibitive.

Steel billets 6120, 50 and 60 are surface hardened. Made in USA and Hella expensive when available.

There have been some issues with hardness variation in some blanks. Several rockwell points.
We've tested both against OEM lifters and cores.

Off shore lifters have low rockwell and questionable materials.

Getting made in USA lifters is good insurance.









Scotty J. "AKA" The "Mad Porter"
"EMC 2006" 3rd place finisher
Ported BBF iron head specialist & Aluminum heads from all sources.
Custom ground cams
See our products in the Vendor for sale section
Customized crate engines
ParklandAutoMachine.com
R-H-P.biz
"Parkland Performance Auto Machine" Formerly RHP
(253)-988-6648
Parkland Auto Machine
 

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1990 Ford Mustang LX 351M powered!! Project Cherry Bomb!!
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Iron flat tappet cam blanks are the same hardness throughout. All / most are CWC and made in Mexico.
Though they can be nitride hardened it is cost prohibitive.

Steel billets 6120, 50 and 60 are surface hardened. Made in USA and Hella expensive when available.

There have been some issues with hardness variation in some blanks. Several rockwell points.
We've tested both against OEM lifters and cores.

Off shore lifters have low rockwell and questionable materials.

Getting made in USA lifters is good insurance.









Scotty J. "AKA" The "Mad Porter"
"EMC 2006" 3rd place finisher
Ported BBF iron head specialist & Aluminum heads from all sources.
Custom ground cams
See our products in the Vendor for sale section
Customized crate engines
ParklandAutoMachine.com
R-H-P.biz
"Parkland Performance Auto Machine" Formerly RHP
(253)-988-6648
Parkland Auto Machine
Aye, therein lies the rub....
 

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Discussion Starter · #34 ·
Iron flat tappet cam blanks are the same hardness throughout. All / most are CWC and made in Mexico.
Though they can be nitride hardened it is cost prohibitive.

Steel billets 6120, 50 and 60 are surface hardened. Made in USA and Hella expensive when available.

There have been some issues with hardness variation in some blanks. Several rockwell points.
We've tested both against OEM lifters and cores.

Off shore lifters have low rockwell and questionable materials.

Getting made in USA lifters is good insurance.









Scotty J. "AKA" The "Mad Porter"
"EMC 2006" 3rd place finisher
Ported BBF iron head specialist & Aluminum heads from all sources.
Custom ground cams
See our products in the Vendor for sale section
Customized crate engines
ParklandAutoMachine.com
R-H-P.biz
"Parkland Performance Auto Machine" Formerly RHP
(253)-988-6648
Parkland Auto Machine
Hard part is knowing how many of the big cam makers are still USA made like for insurance comp cams and others.
 

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Iron flat tappet cam blanks are the same hardness throughout. All / most are CWC and made in Mexico.
Though they can be nitride hardened it is cost prohibitive.

Steel billets 6120, 50 and 60 are surface hardened. Made in USA and Hella expensive when available.

There have been some issues with hardness variation in some blanks. Several rockwell points.
We've tested both against OEM lifters and cores.

Off shore lifters have low rockwell and questionable materials.

Getting made in USA lifters is good insurance.









Scotty J. "AKA" The "Mad Porter"
"EMC 2006" 3rd place finisher
Ported BBF iron head specialist & Aluminum heads from all sources.
Custom ground cams
See our products in the Vendor for sale section
Customized crate engines
ParklandAutoMachine.com
R-H-P.biz
"Parkland Performance Auto Machine" Formerly RHP
(253)-988-6648
Parkland Auto Machine
Who are the manufacturers at sell US made flat tappet lifters?
 

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Who are the manufacturers at sell US made flat tappet lifters?
Johnson closed when the manufacturing site was sold. Johnson now being made in Ohio. Name of company escapes me. I can ask again at Delta.

Our epwi lifters, sealed power and felpro are repackaging these lifters.

Comp hydraulic lifters are sourced from China at last check.







SJ
 

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Hard part is knowing how many of the big cam makers are still USA made like for insurance comp cams and others.

There are NO USA made flat tappet cam blanks. NONE...
CWC went to Mexico in the 90's.

Roller billets yes.

Roller austempered iron is another matter.








SJ
 

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Discussion Starter · #38 ·
There are NO USA made flat tappet cam blanks. NONE...
CWC went to Mexico in the 90's.

Roller billets yes.

Roller austempered iron is another matter.








SJ
Well that means the comp cams I bought back in 1999 for my small block was China and no problem with that one so hopefully the one I put in the 468 love's me the same way I'll just have to pray to the cam God's and go from there.🙏🤠 ******* style.😁
 

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Discussion Starter · #39 ·
Well that means the comp cams I bought back in 1999 for my small block was China and no problem with that one so hopefully the one I put in the 468 love's me the same way I'll just have to pray to the cam God's and go from there.🙏🤠 *** style.😁
Gee, all I said was ******* style and I guess I can't say that here.🤣
 

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I tried to ask on Summit's website if a certain cam gear was retarded advanced or straight up and it was denied because of language...
 
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