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Expensive mistake #3219157 03/08/24 08:37 PM 03/08/24 08:37 PM
Joined: Jan 2003 Posts: 30,998 Oregon A AndyF OP I Win
AndyF OP I Win A Joined: Jan 2003 Posts: 30,998 Oregon	Have a 427 Chevy on the dyno at the moment. It is a 1966 four bolt casting, originally from a Corvette according to the guy who owns it. Unfortunately, the original owner was so paranoid about someone stealing his 427 that he stamped his name and driver license number over the factory numbers and ruined the value of the block. These early Corvette blocks sell for up to $10,000 to a collector. Since it isn't a numbers block anymore the current owner hot rodded it. Stroked it to 496, added Trick Flow heads and a solid street roller cam. It is a nice engine, makes 630 hp and 615 torque. Going in an El Camino. Should be a blast.

Re: Expensive mistake [Re: AndyF] #3219160 03/08/24 08:53 PM 03/08/24 08:53 PM
Joined: Dec 2013 Posts: 4,669 Wichita G GY3 master
GY3 master G Joined: Dec 2013 Posts: 4,669 Wichita	If you don't care about numbers, it's not a mistake! '63 Dodge 330 11.19 @ 121 mph Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs. 10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.

Re: Expensive mistake [Re: GY3] #3219173 03/08/24 09:50 PM 03/08/24 09:50 PM
Joined: Jan 2003 Posts: 30,998 Oregon A AndyF OP I Win
AndyF OP I Win A Joined: Jan 2003 Posts: 30,998 Oregon	Here is another very similar engine that is in the shop at the moment. This is another 1966 427 but the factory engine numbers are still on it so it can be decoded as a 1966 427/425 or a L72. The 427/425 had solid lifters, 780 Holley carb, a bunch of special parts and only came with a manual trans. This one came out of a passenger car but the VIN isn't stamped on it so don't know what. Probably Impala SS. The passenger car 427/425 are much rarer than the Corvette L72 engines since most people buying a big car didn't want a high compression, solid lifter engine with a manual shifter. I think this one his getting hot rodded too but I don't know the details. Last edited by AndyF; 03/08/24 09:51 PM.

Re: Expensive mistake [Re: GY3] #3219227 03/09/24 03:03 AM 03/09/24 03:03 AM
Joined: Aug 2003 Posts: 43,127 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,127 Bend,OR USA	Originally Posted by GY3 If you don't care about numbers, it's not a mistake! it is only a mistake if the owner of the parts think it is, correct Andy Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: Expensive mistake [Re: AndyF] #3219228 03/09/24 03:59 AM 03/09/24 03:59 AM
Joined: Jan 2007 Posts: 10,130 A Red State SNK-EYZ I Live Here
SNK-EYZ I Live Here Joined: Jan 2007 Posts: 10,130 A Red State	It's not as much of a mistake as the guy who ground off the VIN number of a 1970 426 Hemi out of a 70 Hemi Challenger Convertible so he could stamp in the VIN number for his 66 Hemi Satellite. Kayse can't keep up at all now. lol

Re: Expensive mistake [Re: SNK-EYZ] #3219230 03/09/24 06:54 AM 03/09/24 06:54 AM
Joined: Nov 2007 Posts: 21,819 Kirkland, Washington Pacnorthcuda Too Many Posts
Pacnorthcuda Too Many Posts Joined: Nov 2007 Posts: 21,819 Kirkland, Washington	I thought VIN numbered blocks didn’t begin till 68, so a correctly dated 66 block could be called a numbers engine?

Re: Expensive mistake [Re: Pacnorthcuda] #3219236 03/09/24 08:20 AM 03/09/24 08:20 AM
Joined: Dec 2014 Posts: 5,783 ohio R ruderunner master
ruderunner master R Joined: Dec 2014 Posts: 5,783 ohio	Corvette guy's don't care about the numbers on the block originally, they put them on during "restoration " Angry white pureblood male

Re: Expensive mistake [Re: Pacnorthcuda] #3219237 03/09/24 08:20 AM 03/09/24 08:20 AM
Joined: Jan 2007 Posts: 10,130 A Red State SNK-EYZ I Live Here
SNK-EYZ I Live Here Joined: Jan 2007 Posts: 10,130 A Red State	Originally Posted by Pacnorthcuda I thought VIN numbered blocks didn’t begin till 68, so a correctly dated 66 block could be called a numbers engine? Exactly, but a 1969 casting date block that you ground off the VIN that started JS27R0B would never be correct, but the guy did it. The VIN pad on the oil plan rail didn't even exist on Hemi blocks (or big blocks) till 68. Kayse can't keep up at all now. lol

Re: Expensive mistake [Re: SNK-EYZ] #3219243 03/09/24 08:57 AM 03/09/24 08:57 AM
Joined: Dec 2006 Posts: 3,395 Pa Hot 340 master
Hot 340 master Joined: Dec 2006 Posts: 3,395 Pa	Originally Posted by SNK-EYZ Originally Posted by Pacnorthcuda I thought VIN numbered blocks didn’t begin till 68, so a correctly dated 66 block could be called a numbers engine? Exactly, but a 1969 casting date block that you ground off the VIN that started JS27R0B would never be correct, but the guy did it. The VIN pad on the oil plan rail didn't even exist on Hemi blocks (or big blocks) till 68. THATS what a mistake looks like

Re: Expensive mistake [Re: AndyF] #3219256 03/09/24 10:29 AM 03/09/24 10:29 AM
Joined: Oct 2003 Posts: 11,684 W. Kentucky justinp61 I Live Here
justinp61 I Live Here Joined: Oct 2003 Posts: 11,684 W. Kentucky	Originally Posted by AndyF Here is another very similar engine that is in the shop at the moment. This is another 1966 427 but the factory engine numbers are still on it so it can be decoded as a 1966 427/425 or a L72. The 427/425 had solid lifters, 780 Holley carb, a bunch of special parts and only came with a manual trans. This one came out of a passenger car but the VIN isn't stamped on it so don't know what. Probably Impala SS. The passenger car 427/425 are much rarer than the Corvette L72 engines since most people buying a big car didn't want a high compression, solid lifter engine with a manual shifter. I think this one his getting hot rodded too but I don't know the details. Wouldn't decking the block take the numbers off?

Re: Expensive mistake [Re: justinp61] #3219273 03/09/24 12:36 PM 03/09/24 12:36 PM
Joined: Jan 2003 Posts: 30,998 Oregon A AndyF OP I Win
AndyF OP I Win A Joined: Jan 2003 Posts: 30,998 Oregon	Originally Posted by justinp61 Originally Posted by AndyF Here is another very similar engine that is in the shop at the moment. This is another 1966 427 but the factory engine numbers are still on it so it can be decoded as a 1966 427/425 or a L72. The 427/425 had solid lifters, 780 Holley carb, a bunch of special parts and only came with a manual trans. This one came out of a passenger car but the VIN isn't stamped on it so don't know what. Probably Impala SS. The passenger car 427/425 are much rarer than the Corvette L72 engines since most people buying a big car didn't want a high compression, solid lifter engine with a manual shifter. I think this one his getting hot rodded too but I don't know the details. Wouldn't decking the block take the numbers off? Yep, that is a big problem with the high dollar Chevy blocks. Lots of blocks lost their VIN numbers during rebuilds back in the 70's and 80's. Eventually people figured out to leave the VIN area unmachined but that requires modern equipment. The old surfacing equipment used 40 years ago just did a complete pass and the VIN number and engine ID was destroyed.

Re: Expensive mistake [Re: AndyF] #3219275 03/09/24 12:40 PM 03/09/24 12:40 PM
Joined: Feb 2014 Posts: 1,699 central il. S second 70 top fuel
second 70 top fuel S Joined: Feb 2014 Posts: 1,699 central il.	Originally Posted by AndyF Here is another very similar engine that is in the shop at the moment. This is another 1966 427 but the factory engine numbers are still on it so it can be decoded as a 1966 427/425 or a L72. The 427/425 had solid lifters, 780 Holley carb, a bunch of special parts and only came with a manual trans. This one came out of a passenger car but the VIN isn't stamped on it so don't know what. Probably Impala SS. The passenger car 427/425 are much rarer than the Corvette L72 engines since most people buying a big car didn't want a high compression, solid lifter engine with a manual shifter. I think this one his getting hot rodded too but I don't know the details. If that block was installed in a car it would have the serial number on the pad. They started on corvettes in 1960

Re: Expensive mistake [Re: second 70] #3219297 03/09/24 02:05 PM 03/09/24 02:05 PM
Joined: Jan 2003 Posts: 20,752 A collage of whims topside Too Many Posts
topside Too Many Posts Joined: Jan 2003 Posts: 20,752 A collage of whims	Well, stamping Corvette blocks - or should I say re-stamping - to have the desired #s has been going on forever. Obviously, that usually requires decking, but it's been a refined art for some time...

Re: Expensive mistake [Re: second 70] #3219335 03/09/24 04:20 PM 03/09/24 04:20 PM
Joined: Jan 2003 Posts: 30,998 Oregon A AndyF OP I Win
AndyF OP I Win A Joined: Jan 2003 Posts: 30,998 Oregon	Originally Posted by second 70 Originally Posted by AndyF Here is another very similar engine that is in the shop at the moment. This is another 1966 427 but the factory engine numbers are still on it so it can be decoded as a 1966 427/425 or a L72. The 427/425 had solid lifters, 780 Holley carb, a bunch of special parts and only came with a manual trans. This one came out of a passenger car but the VIN isn't stamped on it so don't know what. Probably Impala SS. The passenger car 427/425 are much rarer than the Corvette L72 engines since most people buying a big car didn't want a high compression, solid lifter engine with a manual shifter. I think this one his getting hot rodded too but I don't know the details. If that block was installed in a car it would have the serial number on the pad. They started on corvettes in 1960 Yeah I've seen some mention of that. Sounds like GM only stamped the VIN on special combinations and even a 427/425 Impala SS wasn't special enough to get a VIN stamp in '66. Without a VIN we're just guessing on the Impala SS. Could also be a Biscayne. No way to know at this point but it was a rare bird whatever it was.

Re: Expensive mistake [Re: AndyF] #3219377 03/09/24 06:42 PM 03/09/24 06:42 PM
Joined: Mar 2005 Posts: 2,644 North Carolina sasquatch master
sasquatch master Joined: Mar 2005 Posts: 2,644 North Carolina	Well their first mistake was building a Chevy......Todd www.mopartsracing.com

Re: Expensive mistake [Re: sasquatch] #3219387 03/09/24 07:17 PM 03/09/24 07:17 PM
Joined: Dec 2013 Posts: 4,669 Wichita G GY3 master
GY3 master G Joined: Dec 2013 Posts: 4,669 Wichita	Originally Posted by sasquatch Well their first mistake was building a Chevy......Todd '63 Dodge 330 11.19 @ 121 mph Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs. 10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.

Re: Expensive mistake [Re: topside] #3219391 03/09/24 07:53 PM 03/09/24 07:53 PM
Joined: Jan 2003 Posts: 20,171 Park Forest, IL slantzilla Too Many Posts
slantzilla Too Many Posts Joined: Jan 2003 Posts: 20,171 Park Forest, IL	Originally Posted by topside Well, stamping Corvette blocks - or should I say re-stamping - to have the desired #s has been going on forever. Obviously, that usually requires decking, but it's been a refined art for some time... As has restamping Mopar blocks................. "Everybody funny, now you funny too."

Re: Expensive mistake [Re: sasquatch] #3219424 03/09/24 10:31 PM 03/09/24 10:31 PM
Joined: Oct 2005 Posts: 268 Anchorage, Alaska metallicareload enthusiast
metallicareload enthusiast Joined: Oct 2005 Posts: 268 Anchorage, Alaska	Originally Posted by sasquatch Well their first mistake was building a Chevy......Todd 440, 4-Speed, 3.54 1968, when Dinosaurs ruled the Earth

Re: Expensive mistake [Re: metallicareload] #3219465 03/10/24 09:07 AM 03/10/24 09:07 AM
Joined: Mar 2003 Posts: 2,497 PA moparacer top fuel
moparacer top fuel Joined: Mar 2003 Posts: 2,497 PA	That was not a mistake, that was owner stupidity. I have seen it done to very collectable guns too. The good thing about a block is it can be machined and corrected, whereas you don't mess with gun serials. 67 Barracuda street/bracket car 11.27-119 68 Dart 502 BB 8.70s-152 414 cid SB Dragster 7.65-174

Re: Expensive mistake [Re: moparacer] #3219490 03/10/24 11:52 AM 03/10/24 11:52 AM
Joined: Mar 2005 Posts: 3,138 Central NC gch master
gch master Joined: Mar 2005 Posts: 3,138 Central NC	With those heads and a solid roller cam I would have expected more hp ? Don't know the rest of the specs but 600hp in any street car should be a plenty.

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