440 crank in a 400 to make a 470....machining $?
#85408
07/07/08 06:37 PM
07/07/08 06:37 PM
|
Joined: Jan 2003
Posts: 7,497 Austin, TX
HemiDave
OP
master
|
OP
master
Joined: Jan 2003
Posts: 7,497
Austin, TX
|
How much does it cost to get a 440 crank cut to 400 main journal size and get the rod journals offset ground to 2.2" AND get the counterweights cut down? Cheaper than a new crank? Thanks!! Dave
|
|
|
Re: 440 crank in a 400 to make a 470....machining $?
[Re: HemiDave]
#85409
07/07/08 08:09 PM
07/07/08 08:09 PM
|
Joined: Jan 2003
Posts: 10,022 MN
JERICOGTX
I Live Here
|
I Live Here
Joined: Jan 2003
Posts: 10,022
MN
|
Quote:
How much does it cost to get a 440 crank cut to 400 main journal size and get the rod journals offset ground to 2.2" AND get the counterweights cut down? Cheaper than a new crank?
Thanks!!
Dave
I doubt you could have all that done to a used crankshaft, and be cheaper then a new Eagle crank...
IIRC it was $200 to turn my Eagle crank down on the mains, and have the counterweights machined, but that was 7 years ago.
|
|
|
Re: 440 crank in a 400 to make a 470....machining $?
[Re: AndyF]
#85412
07/07/08 10:21 PM
07/07/08 10:21 PM
|
Joined: Apr 2007
Posts: 871 WA 98043
thecarfarmer
super stock
|
super stock
Joined: Apr 2007
Posts: 871
WA 98043
|
Of course, when you have your own crank ground, you'll diminish the likelihood of finding out that you'll have to get new bearings with a WIDER #3, as well as smaller diameter (had a taper issue corrected) because the thrust surfaces are OUT OF SPEC!
Makes for a pretty expensive 'budget' installation... the first set of bearings got started with the knife going for clearance (then found out there was .0015" taper starting from the edge of the oil hole), and a second set .010" under with .010" wider thrust.
The best part: I started mocking up the rods a week or so ago, and found that there's .021" (yup, .004" over the factory maximum spec) of side-clearance on the first set of rods I checked - and that's with the edges of the bearings rubbing on the crank radius. Wonder if the rods will be able to move farther apart after I chamfer the bearings?
Not trying to tell anyone not to buy the chinese stuff, but just want to throw a 'heads up' out there that these parts that are s'posed to be "drop in" don't always work out that way.
-bill
Seduce the attractive, and charm the rest.
******
489 C.I.D., roller cam, aftermarket heads, tunnel ram, stock '54 Dodge rear axle assembly: which of these doesn't belong?
|
|
|
Re: 440 crank in a 400 to make a 470....machining $?
[Re: thecarfarmer]
#85414
07/07/08 11:01 PM
07/07/08 11:01 PM
|
Anonymous
Unregistered
|
Anonymous
Unregistered
|
i'll say i go out-of-my-way NOT to buy products made in china. i do sell em alot of scrap though.
|
|
|
Re: 440 crank in a 400 to make a 470....machining $?
#85415
07/07/08 11:17 PM
07/07/08 11:17 PM
|
Anonymous
Unregistered
|
Anonymous
Unregistered
|
thats why the dollars down all this chinese crap find a good usa made brand itll save a headache
|
|
|
Re: 440 crank in a 400 to make a 470....machining $?
[Re: HemiDave]
#85416
07/08/08 01:16 PM
07/08/08 01:16 PM
|
Joined: Jan 2003
Posts: 3,719 Space Station #5
471Magnum
master
|
master
Joined: Jan 2003
Posts: 3,719
Space Station #5
|
I did the crank for my 471 in 2002/2003, so the pricing is a bit dated. As already stated, the chinese forgings now make it tough to justify doing your own.
Cost me about $750 to have the counterweights turned, the mains reduced and the rods offset ground, plus a competion balance. Machinist took more off the counterweights than needed, and it ended up costing me a few extra slugs of mallory metal in the end.
413 Crank core cost me about $100, but it was part of a package deal.
I've got another 400 block and RB crank at my disposal, so I have been considering pricing out another stroker motor for my next yet to be determined project. I might swing past the machine shop and get a quote for another offset grind.
-Jim
I can fix it... my old man is a television repairman. He's got the ultimate set of tools... I can fix it.
Currently Mopar-less
|
|
|
|
|