427 crank
Thread Starter
Burning Brakes
Joined: Dec 2003
Posts: 1,149
Likes: 153
427 crank
I recently read somewhere(don't remember where,getting old sucks) that G.M. is selling a forged 427 crank for about $300,can anybody point me in the right direction.I did a search on the forum and nothing came up. thanks in advance for any help.
Tech Contributor
Joined: Jun 2004
Posts: 20,855
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From: I tend to be leery of any guy who doesn't own a chainsaw or a handgun.
Been curious myself about the availability of a factory 427 crank. The only part number I see listed in the GM Performance parts catalog is 10114186, but that's for a Gen V and Gen VI engine. I'm building a new engine this summer, and am trying to decide whether to sell my short block and buy new stuff, or just transplant the internals of my present (track) engine. Finding a reasonably priced crank with a decent pedigree would certainly help in the decision making process.
Race Director
Joined: Jan 2000
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From: Corsicana, Tx
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Ck Competion Products....they used to have a bunch of leftover GM "blems" for sale cheap. I know a fellow running one of them in a 4.600x3.76 840HP@8100 rpm Vette. He shifts at 8600 and has been doing it for years. No issues. Runs low-mid 9's on motor.
The 366's are another way to do it if you balance everything correctly. Or even 427 truck cranks are basically the same thing.
JIM
The 366's are another way to do it if you balance everything correctly. Or even 427 truck cranks are basically the same thing.
JIM
Le Mans Master
Joined: Apr 2006
Posts: 5,403
Likes: 95
Ck Competion Products....they used to have a bunch of leftover GM "blems" for sale cheap. I know a fellow running one of them in a 4.600x3.76 840HP@8100 rpm Vette. He shifts at 8600 and has been doing it for years. No issues. Runs low-mid 9's on motor.
The 366's are another way to do it if you balance everything correctly. Or even 427 truck cranks are basically the same thing.
JIM
The 366's are another way to do it if you balance everything correctly. Or even 427 truck cranks are basically the same thing.
JIM
$99.00 apiece and the shipping was free, next door nieghbor has
them now.
Last edited by Little Mouse; May 7, 2007 at 12:24 AM.
Pro
Joined: Mar 2002
Posts: 511
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From: St. Louis MO
FYI....366 truck cranks for GEN V/VI blocks are all cast, and not all 427 GEN V/VI cranks are fordged, so be careful if you think your buying fordged and you pay for fordged only to find out that its really cast.
Tech Contributor
Joined: Jun 2004
Posts: 20,855
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From: I tend to be leery of any guy who doesn't own a chainsaw or a handgun.
I did a similar thing, as my current track motor is a swap meet 427 crank in a later vintage 454 block (the original engine is enjoying a comfortable retirement under my work bench). Regarding the 366 crank (of which I admit I know nothing about), is there any issues about having to add a great deal of material to the crank to restore balance with the bigger 427 pistons? My Chevy BB Interchange book mentions some differences between 396/402 and 427 cranks, that being mainly the size of the #3 counterweight. Just curious if the 366 crank has narrower counterweights given that the 366 pistons are smaller, and possibly lighter. Just wondering.
Pro
Joined: Sep 2006
Posts: 551
Likes: 2
From: Clovis CA
Hey guys, there's a shop in LA that bought out an old parts store or dealership, he had a shelf of New/old GM 427 cranks. I got one for 250, Ron Sporl performance 504-279-2460, don't know if he still has any...
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Le Mans Master
Joined: Jan 2006
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From: Butler Pa
Regarding the 366 crank (of which I admit I know nothing about), is there any issues about having to add a great deal of material to the crank to restore balance with the bigger 427 pistons? My Chevy BB Interchange book mentions some differences between 396/402 and 427 cranks, that being mainly the size of the #3 counterweight. Just curious if the 366 crank has narrower counterweights given that the 366 pistons are smaller, and possibly lighter. Just wondering.
Pro
Joined: Mar 2002
Posts: 511
Likes: 0
From: St. Louis MO
My 366 crank ended up needing a small slug of heavy metal installed in the front counter weight to balance out. But then i used longer rods and 454 pistons with a much shorter compression height than your standard extra heavy 427 piston short con rod setup. I also had to use a weighted flex plate because I have a 1-piece rear main seal crank.
