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cranks eagle 4.500 cast steel limit?

3603 Views 21 Replies 8 Participants Last post by  thunderbird1969marcelo
HI, The cranks eagle 4.500 cast steel will handle 6500 rpm?
Thanks in advance!





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Need more details how much hp, nitrous, compression, balanced? All these play into the overall estimate on how much it can take.
Need more details how much hp, nitrous, compression, balanced? All these play into the overall estimate on how much it can take.


New Eagle Cast Steel Crankshaft, Internal Balance

New Eagle "ESP" 3-D H-Beam connecting rods ( Bushed Fit Pins )

New JE forged high performance aluminum pistons, with pins and locks

High performance plasma moly piston ring set

Clevite 77 Rod & Main Bearings

Harmonic balancer SUM-B64272 Safety Rating SFI 18.1

Cam Hydraulic flat tappet Comp Cam 3,000-6,800 (305 h)
Advertised Duration 305 int./305 exh.
0.585 int./0.585 exh. lift

Cylinder head aluminiun customs 2.20 1.76

Compression 10,5

Intake manifold Blue thunder with twin 660 Holley

Headers Hooker competition

Nitrous no

hp??



thanks for replying!


Marcelo
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New Eagle Cast Steel Crankshaft, Internal Balance

New Eagle "ESP" 3-D H-Beam connecting rods ( Bushed Fit Pins )

New JE forged high performance aluminum pistons, with pins and locks

High performance plasma moly piston ring set

Clevite 77 Rod & Main Bearings

Harmonic balancer SUM-B64272 Safety Rating SFI 18.1

Cam Hydraulic flat tappet Comp Cam 3,000-6,800 (305 h)
Advertised Duration 305 int./305 exh.
0.585 int./0.585 exh. lift

Cylinder head aluminiun customs 2.20 1.76

Compression 10,5

Intake manifold Blue thunder with twin 660 Holley

Headers Hooker competition

Nitrous no


Marcelo
In the above combination, the Eagle cast 4.500 crankshaft should be able to hold the 6500 rpm limit no problem assuming good tune. Not the most fitting cam choice for the upper rpm range of a 4.50 stroker but the tunnel ram will certainly help.

Given the 6500 rpm limit, my personal opinion is that you should ditch the 1/2-grooved Clevite 77 main hearings and switch to either a 3/4-groove performance bearing (such as the Federal Mogul/Speed Pro Z134M) or a fully-grooved main bearing (such as the Federal Mogul Z4907M).

Paul
In the above combination, the Eagle cast 4.500 crankshaft should be able to hold the 6500 rpm limit no problem assuming good tune. Not the most fitting cam choice for the upper rpm range of a 4.50 stroker but the tunnel ram will certainly help.

Given the 6500 rpm limit, my personal opinion is that you should ditch the 1/2-grooved Clevite 77 main hearings and switch to either a 3/4-groove performance bearing (such as the Federal Mogul/Speed Pro Z134M) or a fully-grooved main bearing (such as the Federal Mogul Z4907M).

Paul
HI PAUL,
OK MAX 6500.
PROBLEMS WITH Clevite 77? NO GOOD?
I HAVE ALSO " Trick Flow® Main Stud Girdles "


THANKS AGAIN FOR THE INFORMATION!

MARCELO
Love the van parked at the curb!
I`m from argentina, my car T-bird 69 557 strocker.

Thank you for tech!!

sincerely,


Marcelo
Paul the Blue thunder intake is a dual plane dual carb piece like what the factory would have offered if they had offered a dual quad option on 429's. Bluethunder is the only company that makes them. Seen one years ago on a Thunderbolt clone that had a 501 in it. The rated rpm range on them is 15-6500. They would make a nice intake on a resto-mod!

Over-all I think the combo looks good, there are better cams than the 305H though as far as power production.
Paul the Blue thunder intake is a dual plane dual carb piece like what the factory would have offered if they had offered a dual quad option on 429's. Bluethunder is the only company that makes them. Seen one years ago on a Thunderbolt clone that had a 501 in it. The rated rpm range on them is 15-6500. They would make a nice intake on a resto-mod!

Over-all I think the combo looks good, there are better cams than the 305H though as far as power production.
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Exactly the intake I was thinking it was that is a sweet looking piece!:D I wanted to run one with two 3310's converted to side hung float bowls.;)
HI, The cranks eagle 4.500 cast steel will handle 6500 rpm?
Thanks in advance!





Love the 69 T'bird, its the best lookin one in my opinion. Good to see one in such good shape.
Hi 95lightiningguy , thank you very much for the feedback!!!!!:)
just want to say thats a realy sweet 69 thunderbird wow!
Paul the Blue thunder intake is a dual plane dual carb piece...
Oops, duh, I skimmed the parts list and only saw the two 660's which I consider to be T/R carbs.

Paul
HI PAUL,
OK MAX 6500.
PROBLEMS WITH Clevite 77? NO GOOD?
I HAVE ALSO " Trick Flow® Main Stud Girdles "


THANKS AGAIN FOR THE INFORMATION!

MARCELO
Marcelo, if the engine is already together and running in the TBird, then don't worry about the bearings. Clevite brand bearings are fine; my preference for the 3/4-groove or fully-grooved is in the interest of longer oil feed to the rod bearings. If the engine is running fine, then great. When you remove the engine for any reason, change the bearings but it is not necessary to remove the engine speicifcally for this purpose if it is working well now.

Paul
That's the first plug I've heard for Federal "Mongrel" bearings in a long time.
Marcelo, if the engine is already together and running in the TBird, then don't worry about the bearings. Clevite brand bearings are fine; my preference for the 3/4-groove or fully-grooved is in the interest of longer oil feed to the rod bearings. If the engine is running fine, then great. When you remove the engine for any reason, change the bearings but it is not necessary to remove the engine speicifcally for this purpose if it is working well now.

Paul
THANKS YOU!!!!:)
Hello Marcelo, nice car!! I am curious where are you ordering parts from?
if imported is it taxed?
Also what is the law on importing cars to Argentina? I have read online that it is not possible unless car dealership is involved.
Hello Marcelo, nice car!! I am curious where are you ordering parts from?
if imported is it taxed?
Also what is the law on importing cars to Argentina? I have read online that it is not possible unless car dealership is involved.

THANKS FOR COMMENTS!:p
HIGHER TAXES HAVE THE PARTS, IN ARGENTINA. I BOUGHT IN USA AND THE SHIPPING FL. A FRIEND LIVES THERE.
CLASSIC CAR IMPORT, IT IS VERY VERY DIFFICULT. ALMOST IMPOSSIBLE FOR THE COST.I bought the "tbird 69" YGALAXIE 63 2 DOOR SEDAN. WHAT I'M RESTORING.I LOVE THE AMERICAN MUSCLE:):):):)
Marcelo, if the engine is already together and running in the TBird, then don't worry about the bearings. Clevite brand bearings are fine; my preference for the 3/4-groove or fully-grooved is in the interest of longer oil feed to the rod bearings. If the engine is running fine, then great. When you remove the engine for any reason, change the bearings but it is not necessary to remove the engine speicifcally for this purpose if it is working well now.

Paul
PAUL, these are: MS1039V which is a clevite tri-metal half groove.
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