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Old 03-22-2009, 05:49 PM   #1
my67chevytruck
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402 bbc question

I found a 402 bbc complete with all brackets, and accessoriesAlt, ac, ps, etc from the air cleaner to the oil pan. apparently they pulled it about 8 years ago from a late 60 early 70 station wagon and it was apparently running ? It has been mounted on the engine start stand since then. can someone let me know what the value of this would be,

Thanks

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1956 Chevy Apache
1967 C10 SWB FleetSide (under construction)
1969 K10 SWB FleetSide (Future Build)
1972 C10 SWB Stepside (Future Build)


56 chevy truck :
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67 truck build:

http://www.67-72chevytrucks.com/vboard/showthread.php?t=281357/1


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Old 03-22-2009, 06:07 PM   #2
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Re: 402 bbc question

I sold a 68 396 with all the brackets that I rebuilt myself mostly stock years ago for 2500. So, maybe a grand if youre not in a hurry to sell it.
Bein that someone will be lookin at just a motor, and not able to hear it run and all. Expect to get chiseled on your price if it's a little high, builders will expect "core" price. So you can check with a machine shop and ask what their core price is and go from there.
Almost better to take all the brackets and tin off, and sell them sepperately since BBC brackets & tin are valuable.

Just my .02
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Old 03-22-2009, 10:15 PM   #3
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Re: 402 bbc question

It would have to be a 70 or later if it is a 402.The factory started boring 396s to 402 in 1970 when the 400 small block came out.They did not want a bb with less cubic inchs than the largest smallblock.I would also agree that you would come out ahead if you remove all the brakets and sell separate from the motor unless you come across someone wanting to convert a chevelle,camaro,etc from smallblock to bb.If cleaned and painted nicely the brackets will sell good on ebay.
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Old 03-22-2009, 10:21 PM   #4
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Re: 402 bbc question

Thanks for the input guys, I am thinking of purchasing this motor and was trying to see what the purchase value should be
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1956 Chevy Apache
1967 C10 SWB FleetSide (under construction)
1969 K10 SWB FleetSide (Future Build)
1972 C10 SWB Stepside (Future Build)


56 chevy truck :
http://www.cardomain.com/ride/2955823/1

67 truck build:

http://www.67-72chevytrucks.com/vboard/showthread.php?t=281357/1


69 k10:
http://67-72chevytrucks.com/vboard/s...d.php?t=389470
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Old 03-22-2009, 11:23 PM   #5
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Re: 402 bbc question

67/72junkie wrote this "It would have to be a 70 or later if it is a 402.The factory started boring 396s to 402 in 1970 when the 400 small block came out.They did not want a bb with less cubic inchs than the largest smallblock."

I have a 1970 chevy truck with a big block. The spid in my truck says 396 but the badge on the fender side says 400. So is my truck a 396 or a 402 big block?
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Old 03-22-2009, 11:35 PM   #6
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Re: 402 bbc question

I bought a 71 bb truck last year.When I checked the #s on the motor it was out of a 69 chevelle.I removed the aluminum intake and valve covers after I cranked the motor and made sure it ran ok.I installed a correct cast iron 69 dated intake and stock valve covers.It was very clean on the inside when I had the intake off and I took a pic.I advertised it in the local bargain trader for $900. I had a guy come pick it up and payed me cash with no questions asked when he saw pics of the inside. I gauranteed it ran fine and didn't knock.It also sold the day the add came out and I'm sure I could have gotten more as he had a 69 ss he was restoring and it was correct date coded 396 only not to his car.if the block was decked no one would know it came from another car but all date codes would have been correct.
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Old 03-22-2009, 11:36 PM   #7
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Re: 402 bbc question

It's not worth anything.

But being the nice guy that I am, I'm willing to pay crating and shipping fees to get it to my place, as is, sight unseen.
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Old 03-22-2009, 11:43 PM   #8
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Re: 402 bbc question

if it is complete with a not broken guarantee it is worth $500-800 unless it is original from a high performance car, then $900-1500 average to a restorer. 402s are commonly seen in cars and trucks with 400 badges on the side of the automobile from the factory. Alot of trucks, Wagons and Impalas from 1970-72 have 400 on the fender with a 402 under the hood. If you need any references looked up on the motor, let me know and I'll be happy to help you out. shooterpcb@yahoo.com
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Old 03-22-2009, 11:46 PM   #9
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Re: 402 bbc question

It will be worth more to the muscle car crowd if it is a short water pump - AC on the passenger side usually. If the PS has the remote reservoir that makes it worth big bucks to the A body BB guys - complete pulleys brackets AC PS remote res media blasted and painted with all the hoses and clamps can bring over a $1,000 easy.
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Old 03-22-2009, 11:47 PM   #10
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Re: 402 bbc question

A 396 and a 402 are the same thing.the block has the same casting #'s the only differance is the 402 is bored .30 from the factory .A .30 over stock 396 piston is the same as a standard bore 402 piston.If your truck is a 70 it should be 402 .I had a 70 ss396 chevelle and it had a 402 .was also a rare car since almost everyone ordered ss454 when they came out in 70.Only 1900 ss396 chevelles produced in 1970
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Old 03-22-2009, 11:59 PM   #11
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Re: 402 bbc question

Shooter, AZ, 67/72;
You guys are messin' me up here!!!!!!!!!!!!!!!!!!!!!!!!!!

All kidding aside, unless the price is really outrageous, it should be a better than decent deal; considering it is "complete".
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"Never kick a fresh turd on a hot day." Harry S. Truman

GUN CONTROL: Never having to say, "I missed you."

Always fire two warning shots into your attacker's chest area before putting a bullet between his eyes. Paraphrased from Louis Awerbuck
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Old 03-23-2009, 12:08 AM   #12
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Re: 402 bbc question

Agree, my point is a complete early BBC if the price is around the numbers posted in the thread would be a good deal. The value in a complete set up is more often in the accessories if you're familiar with what crosses over. Kind of like the value the accessories for a 250 six have on this site - the muscle car and pro tour guys especially love the Novas, Chevelles, Camaros with the 250's. They will give you the complete 250 for free with stock PS and AC just to haul it out of their shop for them.
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Old 03-23-2009, 12:14 AM   #13
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Re: 402 bbc question

Ain't it nice to B.S. about this stuff in a friendly manner & have fun?

Where abouts in Scottsdale are you?
In my misspent youth I used to live in the west side of Phoenix.

I should have move due north instead of WNW!
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"Ah women. They make the highs higher and the lows more frequent." Friedrich Nietzsche

"Never kick a fresh turd on a hot day." Harry S. Truman

GUN CONTROL: Never having to say, "I missed you."

Always fire two warning shots into your attacker's chest area before putting a bullet between his eyes. Paraphrased from Louis Awerbuck
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Old 03-23-2009, 12:17 AM   #14
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Re: 402 bbc question

Honestly unless you are doing a complete restoration project. I would put a 454 in the truck. I can get a complete 402 here for about $400 your call though
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Old 03-23-2009, 12:33 AM   #15
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Re: 402 bbc question

I'm way north, almost to Carefree near Lone Mtn. 15 years ago I was in the middle of nowhere now it's pretty much all built from Bell Rd to Carefree HWY.

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Ain't it nice to B.S. about this stuff in a friendly manner & have fun?

Where abouts in Scottsdale are you?
In my misspent youth I used to live in the west side of Phoenix.

I should have move due north instead of WNW!
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Old 03-23-2009, 12:47 AM   #16
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Re: 402 bbc question

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Originally Posted by blakeaz33 View Post
I'm way north, almost to Carefree near Lone Mtn. 15 years ago I was in the middle of nowhere now it's pretty much all built from Bell Rd to Carefree HWY.
I know where you are & what you mean.
A few years back my son & DIL relocated to the Phx. area. That's how I got my '69. It was his, but he didn't want to haul it so I bought it from him.
His address was "Peoria", but to me they were damn near in Wickenburg.
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"Never kick a fresh turd on a hot day." Harry S. Truman

GUN CONTROL: Never having to say, "I missed you."

Always fire two warning shots into your attacker's chest area before putting a bullet between his eyes. Paraphrased from Louis Awerbuck
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Old 03-23-2009, 01:11 AM   #17
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Re: 402 bbc question

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Originally Posted by 67/72junkie View Post
A 396 and a 402 are the same thing.the block has the same casting #'s the only differance is the 402 is bored .30 from the factory .A .30 over stock 396 piston is the same as a standard bore 402 piston.If your truck is a 70 it should be 402 .I had a 70 ss396 chevelle and it had a 402 .was also a rare car since almost everyone ordered ss454 when they came out in 70.Only 1900 ss396 chevelles produced in 1970

1970 was the second highest production year for total Chevelles built-487,969The best way to narrow down the SS Chevelle statistics is to break it down by engine production.
L34- 396-350 hp-51,437
L78- 396-375 hp- 2,144
L89- 396-375 hp- 18
Alum. head
LS5- 454-360 hp- 4,298
LS6- 454-450 hp- 4,475
This means approximately 62,372 Chevelle Super Sports were built in 1970
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Old 03-23-2009, 07:53 AM   #18
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Re: 402 bbc question

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Honestly unless you are doing a complete restoration project. I would put a 454 in the truck. I can get a complete 402 here for about $400 your call though

This will be for a '72. i will do another frame off amateur build up on it after we finish my son's '67. the '72 cab is a highhump BB cab, and i have the bb linkage and the '72 only bb engine mounts. The guy also have a 468 but it apart and will need to be put back together. Both would come with a Turbo 400. What advantages would the 454 have over the 402? displacement only?
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1956 Chevy Apache
1967 C10 SWB FleetSide (under construction)
1969 K10 SWB FleetSide (Future Build)
1972 C10 SWB Stepside (Future Build)


56 chevy truck :
http://www.cardomain.com/ride/2955823/1

67 truck build:

http://www.67-72chevytrucks.com/vboard/showthread.php?t=281357/1


69 k10:
http://67-72chevytrucks.com/vboard/s...d.php?t=389470

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Old 03-23-2009, 10:00 AM   #19
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Re: 402 bbc question

I guess you can't believe everything you read.I have and old super chevy mag that had most 1970 ss chevelles with 454 and only 1900 with the 396.I am no chevelle expert.Going by their #s I thought the 1970 ss454 was the higher produced and only a few ss396 I read that more than 10 years ago right after I sold the car and thought I had let a rare car go.I still have the mag because I subscribed for years and saved them all.I have a 68 caprice with a 325 hp 396.It has hideaway headlights,tilt,pwr windows,pwrbenchseat factory 8track.Does anyone have production # on 68 caprice with bb and hideaway headlights?
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Old 03-23-2009, 10:17 AM   #20
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Re: 402 bbc question

My67, I bought a complete 402 locally about 7 yrs ago and gave $400 for it. I heard it run before I bought it. I got EVERYTHING with it including headers, alt., PS pump, belts, fan, starter, carb and breather.

Do you know what the guy wants for the 468 with no trans?
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Old 03-23-2009, 10:32 AM   #21
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Re: 402 bbc question

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Originally Posted by 67/72junkie View Post
It would have to be a 70 or later if it is a 402.The factory started boring 396s to 402 in 1970 when the 400 small block came out.They did not want a bb with less cubic inchs than the largest smallblock.
Tidbit of historical info. Actually The 402's were a GM fluke. What happened was they had a batch of 396's that were bored at the wrong angle. So instead of chunking them in the scrap they rebored them correctly but in correcting the mistake they upped the CI's to 402. Thus the reason there are only a couple of years of 402 bb's. Just an interesting bit of history for yall.
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Old 03-23-2009, 10:57 AM   #22
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Re: 402 bbc question

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My67, I bought a complete 402 locally about 7 yrs ago and gave $400 for it. I heard it run before I bought it. I got EVERYTHING with it including headers, alt., PS pump, belts, fan, starter, carb and breather.

Do you know what the guy wants for the 468 with no trans?
he told me $600 on the 468. I will ask him for a price without the tranny.
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1956 Chevy Apache
1967 C10 SWB FleetSide (under construction)
1969 K10 SWB FleetSide (Future Build)
1972 C10 SWB Stepside (Future Build)


56 chevy truck :
http://www.cardomain.com/ride/2955823/1

67 truck build:

http://www.67-72chevytrucks.com/vboard/showthread.php?t=281357/1


69 k10:
http://67-72chevytrucks.com/vboard/s...d.php?t=389470
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Old 03-23-2009, 11:05 AM   #23
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Re: 402 bbc question

600 bucks with tranny seems like a good deal! what's he want for the 402?

monte, i've heard that there was a leak in the gm warehouse cause the motors to form rust, thus having to be bored out so they didnt have to scrap them all. that's 3 theorys on this thread, anyone else heard another?
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Old 03-23-2009, 11:08 AM   #24
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Re: 402 bbc question

he's asking 700 for the 402.

I'll probably get the 402 as its complete, and has all accessories...
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FAQ how to's


1956 Chevy Apache
1967 C10 SWB FleetSide (under construction)
1969 K10 SWB FleetSide (Future Build)
1972 C10 SWB Stepside (Future Build)


56 chevy truck :
http://www.cardomain.com/ride/2955823/1

67 truck build:

http://www.67-72chevytrucks.com/vboard/showthread.php?t=281357/1


69 k10:
http://67-72chevytrucks.com/vboard/s...d.php?t=389470

Last edited by my67chevytruck; 03-23-2009 at 11:09 AM.
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Old 03-23-2009, 11:20 AM   #25
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Re: 402 bbc question

Quote:
Originally Posted by monte0185 View Post
Tidbit of historical info. Actually The 402's were a GM fluke. What happened was they had a batch of 396's that were bored at the wrong angle. So instead of chunking them in the scrap they rebored them correctly but in correcting the mistake they upped the CI's to 402. Thus the reason there are only a couple of years of 402 bb's. Just an interesting bit of history for yall.
I have heard several theories on the 402. This is a new one for me. If you don't mind me asking, where did you get this information?

Another explanation that I heard is that the 396 blocks somehow got some rust in them so GM bored them in order to still use them.
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