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440 swap and no pilot hole drilled in crank ? Please what are my options ?

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69_roady

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picked up a 74 rr big block 4-speed car for the motor,had a rebuilt 440 and a 727 auto behind it,
putting the 440 in my 69 and when i pilled off the 727 found that the crank has no pilot hole drilled ??? My luck
any and all sugjestions helpfull
 
Last edited:
First of all you could drill the crank, lots of work.
Or you can shorten the end of the input shaft of the tranny by cutting it off and buy a bearing that fits the convertor register of the crankshaft.
I believe NAPA sells them.

Good Luck.
 
Also need to consider: Is that 440 from the 74 RR a forged or cast crank? If it's a cast crank you will need to either find a flywheel for a external balance motor or add the proper weight to your flywheel.
 
Hey 66blve , found one,,, them are one nice bearing, needle bearings in them too,
you just made things a wholealot easyer thanks!!!!!
 
Hi rrunner ,,Thanks
good question !! I have an original 11 inch 69 RR big block belhouseing and 11" none balanced flywheel ,,
in front of the intake on the 440 is stamped
4 T 440 from what i can come up with i think ? Please help me on this ,,,

4 means 1974 ???
T means Truck ??????
440 means its a 440

so this tells me i need to have my flywheel balanced like you say,,:(
IMPORTANT QUESTION !!!
does my 69 preasure plate need to be a balanced one ???
 
Last edited:
69_roady said:
Hi rrunner ,,Thanks
good question !! I have an original 11 inch 69 RR big block belhouseing and 11" none balanced flywheel ,,
in front of the intake on the 440 is stamped
4 T 440 from what i can come up with i think ? Please help me on this ,,,

4 means 1974 ???
T means Truck ??????
440 means its a 440

so this tells me i need to have my flywheel balanced like you say,,:(
IMPORTANT QUESTION !!!
does my 69 preasure plate need to be balanced too???
Click to expand...

Think you misunderstood. All 440's till 1972 are internally balanced and the flywheel is balanced by it's self. Cast crank 440's came along in 73 and were externally balanced using the crank damper and the flywheel to do so, but forged crank 440's were still around well into the mid 70's though. If that's all that on the pad and it is a truck motor good chance it is a forged internally balanced 440 and all you need to do is bolt on the flywheel. If I remember correctly there would be a E on the pad for a cast crank. Another way to tell is by the crank damper, its about 1" thick it's for a forged crank, if it's about 3" thick it for a cast crank. Also can tell by the cranks flywheel flange's casting/forging line. Did you have this motor running? If it was smooth, no vibration, take a look at the auto tranny's converter, if it is from a cast/external balance motor it will have a thick weight on it, if from a forged internal balance motor just a thiner weight to balance out the converter it's self.
 
this motor was rebuil when I picked it up and never ran yet ,
I rechecked the numbers they are

4 T 440 E
126

crank damper is 1 5/8 inches thick
the torque converter I took off has two whieghts on the face of it by the drain plug
they are 1 3/8 inches long just over 1/8 inch thick and another skinny wieght just behind them on the rounded part of the converter just a little thicker than tin
I cant see if there is a cast line on the crank flange its bolted to my engine stand and the flex plate is still on it
my fingers are crossed LOL can I be so luckY :)
 
Cast crank 440's have "Cast Crank 440" cast into the damper. If your converter has weights on it, it's an externally balanced motor converter. What flywheel do you have?
 
its an original 11inch fly wheel off a 69 383 roadrunner , its for an internaly balanced motor i was told,
 
If you want to spend the dough, get the McLeod flywheel 464202-17C. It's externally balanced for a cast crank BB. The real trick in this part is that it's a bolted on balance weight that can be removed if you rebuild the motor later on with a steel crank.
 
rrunner said:
Think you misunderstood. All 440's till 1972 are internally balanced and the flywheel is balanced by it's self. Cast crank 440's came along in 73 and were externally balanced using the crank damper and the flywheel to do so, but forged crank 440's were still around well into the mid 70's though. If that's all that on the pad and it is a truck motor good chance it is a forged internally balanced 440 and all you need to do is bolt on the flywheel. If I remember correctly there would be a E on the pad for a cast crank. Another way to tell is by the crank damper, its about 1" thick it's for a forged crank, if it's about 3" thick it for a cast crank. Also can tell by the cranks flywheel flange's casting/forging line. Did you have this motor running? If it was smooth, no vibration, take a look at the auto tranny's converter, if it is from a cast/external balance motor it will have a thick weight on it, if from a forged internal balance motor just a thiner weight to balance out the converter it's self.
Click to expand...

hi brother good info there , am having vibrations problems in my 73 Charger 400 - 4 speeds ( originally auto car ) vibrating standing still when i raise the RPM , my engine is an "E" born originally as a 2BBL as far as i remember on the stamp under the distributor. some told me to check the flywheel it might be wrong for this engine and others told me to check if i have a pilot bushing on the flywheel . my flywheel casting # is 2843212 ( no idea what is my crank if cast or forged

my 400 engine flywheel.jpg
 
I’ve heard those crank bearings will wear a groove in the input shaft. No big thing to pull crank and have it drilled. Take pistons lose shove them down into the cylinders out of the way.
 
Ceedawg said:
I’ve heard those crank bearings will wear a groove in the input shaft. No big thing to pull crank and have it drilled. Take pistons lose shove them down into the cylinders out of the way.[/QUOTE
sadly i work on m own vehicule no one in my area is really certified to work on these cars and such details so am trying to learn from the most experienced guys . i post a picture above of my engine (old photo ) it looks like it's drilled to accept the bushing , what d you think . thankf for the help
Click to expand...
 
69_roady said:
picked up a 74 rr big block 4-speed car for the motor,had a rebuilt 440 and a 727 auto behind it,
putting the 440 in my 69 and when i pilled off the 727 found that the crank has no pilot hole drilled ??? My luck
any and all sugjestions helpfull
Click to expand...
I believe I would replace the crank and put in new bearings
 
Look at your harmonic balancer. If it has an obvious lump of iron on the front (you might have to pull the belts and pulley off to see) then you have a cast crank engine, and you will need the coresponding weighted flywheel, or the add-on weight, to smooth it out. (My bet is that a 400 two barrel motor is 95% likely to be a cast crank).

Edit:
And this original thread is ten years old
 
Here are the input shaft trimming
PILOT-BUSHING-DRAWING.jpg
specs.
 
Vince kf said:
................ it looks like it's drilled to accept the bushing , what d you think ..........
Click to expand...
FWIW, The 440 auto crank I have has the hole depth needed for an uncut input shaft. Drill too deep and one can get into an oil passage. The .890"Ø (green) is not to size for the standard bushing. I believe it's like .940"Ø, you would need to check this to make sure.
upload_2021-7-26_18-41-28.png
 
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