8-400 badge...what exactly does it mean? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

05crewcab · 09-28-2010, 11:50 PM

Just want to make sure of something. the 8-400 badge came out in 71 for the big block trucks even though they were infact 402ci, and, eventhough the '70 trucks were 402's, they still got the 8-396 badge correct?

And, the small block 400 was never offered in the pre-'73 trucks, true?

I ask because I might buy this truck below (for the motor and tranny, and onl y if I can get it cheaper) and can't quite make out the size of the motor in the pic, and I think it is a '72, not a '70:

http://minneapolis.craigslist.org/hn...955810491.html

**too much stuff** · 09-28-2010, 11:56 PM

That is a 72 big block. (402) In 1970 they were badged as 400 thru 72.
And you are correct the 400 small block wasn't offered in these trucks. That looks like a good buy. Better hurry, won't last long.

05crewcab · 09-29-2010, 12:20 AM

Quote:

Originally Posted by too much stuff

That is a 72 big block. (402) In 1970 they were badged as 400 thru 72.
And you are correct the 400 small block wasn't offered in these trucks. That looks like a good buy. Better hurry, won't last long.

Thanks man...that's what I thought...now if only I can con the wife into thinking this is a good idea

Say, this ad in craigs is from your neck of the woods...you thinning the herd?

1967 chevy shortbed parts truck - $500 (Grand Rapids)

**too much stuff** · 09-29-2010, 08:48 AM

Quote:

Originally Posted by 05crewcab

Thanks man...that's what I thought...now if only I can con the wife into thinking this is a good idea

Say, this ad in craigs is from your neck of the woods...you thinning the herd?

1967 chevy shortbed parts truck - $500 (Grand Rapids)

I have been thinning the herd for over a year now. Still have a few to go... And yes, that is one of mine.

05crewcab · 09-29-2010, 10:28 AM

Quote:

Originally Posted by too much stuff

I have been thinning the herd for over a year now. Still have a few to go... And yes, that is one of mine.

Cool, good to know. You have a bunch of parts too, or just some carcasses left? I'm in the market for a few things...

05crewcab · 09-29-2010, 10:29 AM

So, if the guy doesn't have a key for it, how am i to get it running? bridge a wire from the battery to the starter? then likewise, how do i get it to stop running? block the carb?

Or is there an easier way?

7dguy · 09-29-2010, 12:53 AM

Quote:

Originally Posted by 05crewcab

Just want to make sure of something. the 8-400 badge came out in 71 for the big block trucks even though they were infact 402ci, and, eventhough the '70 trucks were 402's, they still got the 8-396 badge correct?

And, the small block 400 was never offered in the pre-'73 trucks, true?

I ask because I might buy this truck below (for the motor and tranny, and onl y if I can get it cheaper) and can't quite make out the size of the motor in the pic, and I think it is a '72, not a '70:

http://minneapolis.craigslist.org/hn...955810491.html

These trucks are funny. The spid sheet in the glove box sometimes say they are 396. The badge says 400, yet they are a 402. Funnier yet is they barely put out over 300HP! Good news is they respond very well to larger cam's and can actually perform a bit when coaxed. You've found somewhat of a rare truck, I'd buy it if it runs.

sleepertruck72 · 09-29-2010, 01:41 AM

I would buy it

shiner2001 · 09-29-2010, 05:21 PM

I'm new around here, but I'm pretty sure that the screw in the upper part of the door, just below the vent window handle tells you it's a 72. Obviously, that's assuming it's all original, but it's a start. Someone correct me if I'm wrong on that one...

Rodk65 · 09-29-2010, 05:41 PM

Its a 72. He sent me the VIN and a couple of pictures.

Name: 70 Chevy trucks 003.jpg
Views: 3895
Size: 52.8 KB

Name: 70 Chevy trucks 001.jpg
Views: 3831
Size: 65.7 KB

Name: 70 Chevy trucks 009.jpg
Views: 3808
Size: 70.9 KB

**tkeduk8r** · 09-29-2010, 05:57 PM

BUY IT before i have to!!! bb, tilt, D60, fact aux tank, vintage turbines... needs a hom eto some one on this board...
--Mike

Robert Martin · 06-22-2017, 06:48 PM

Quote:

Originally Posted by shiner2001

I'm new around here, but I'm pretty sure that the screw in the upper part of the door, just below the vent window handle tells you it's a 72. Obviously, that's assuming it's all original, but it's a start. Someone correct me if I'm wrong on that one...

Correct

Rodk65 · 09-29-2010, 06:39 PM

I'm thinking about it. I'm trying to figure out what to do about the title, or just switch cabs. Just have to make the 5-6 hour road trip.

Rodk65 · 10-03-2010, 12:16 AM

I'm glad someone went to get it. Were any of his other truck any good?

05crewcab · 10-03-2010, 04:02 AM

The '70 c-20 was ok, probably the same level as this truck, and I didn't look to closely at the '64's, except the c-20 dually looked like it was a 67-72 coil rear frame with a dually HO72 rear axle, no box.

This guy is retired and gets 2 to 10 cars daily from people that are running estates or want to clear up the clutter on their farmstead. he generally just scraps them @ about $175 a ton unless they are unique/in better shape than normal.

Funny thing...i had just loaded the truck up on the trailer and parked it on the service road next to the freeway to then settle up with the seller, and some dude pulled off the freeway and stopped by my truck. he then went on to say that he saw the truck loaded up and had to stop because he has a '67 small window short box sitting at his place that he wants sold. We exchanged contact info and I said I would post some pics here for him if he'd like. we'll see if he emails me... These trucks are waiting for us obsessive bastards all over the place

**too much stuff** · 10-03-2010, 11:31 AM

Glad someone from here got it. Did you get a deal? Lots of good parts there...

**tkeduk8r** · 10-03-2010, 11:37 AM

GOOD JOB!!!! I wasnt looking forward to marraige counselling if I diverted our trip to the twins game yesterday to go look at it

...
--Mike

05crewcab · 10-03-2010, 07:34 PM

Quote:

Originally Posted by too much stuff

Glad someone from here got it. Did you get a deal? Lots of good parts there...

I got an ok deal on it...I offered him 5 bills initially and we ended up in the middle.

Quote:

Originally Posted by tkeduk8r

GOOD JOB!!!! I wasnt looking forward to marraige counselling if I diverted our trip to the twins game yesterday to go look at it

...
--Mike

Yeah, I hear ya! In 7 months I went from having no old trucks to having two...the wife is putting together her list of demands as we speak...

Got it cleaned up today... there was moss EVERYWHERE:

Rodk65 · 10-11-2010, 10:59 AM

Congratulations on bringing it back to life. I'm glad someone made the road trip up north to get it. I would have went to look at it, but I still have a truck at Sharpies place in Wyoming I have to pick up.

Robert Martin · 06-22-2017, 06:54 PM

Quote:

Originally Posted by 05crewcab

Just want to make sure of something. the 8-400 badge came out in 71 for the big block trucks even though they were infact 402ci, and, eventhough the '70 trucks were 402's, they still got the 8-396 badge correct?

And, the small block 400 was never offered in the pre-'73 trucks, true?

I ask because I might buy this truck below (for the motor and tranny, and onl y if I can get it cheaper) and can't quite make out the size of the motor in the pic, and I think it is a '72, not a '70:

http://minneapolis.craigslist.org/hn...955810491.html

if I'm not correct please correct me... the 8/400 was a 396ci bored out .30 over which made it a 402. That's why all 3 tags read differently 396 400 and 402. I think I'm partially right...

hdff · 06-22-2017, 08:37 PM

Quote:

Originally Posted by Robert Martin

if I'm not correct please correct me... the 8/400 was a 396ci bored out .30 over which made it a 402. That's why all 3 tags read differently 396 400 and 402. I think I'm partially right...

I have never seen a 8 402 badge....

You realize that this thread is 7 years old...

Robert Martin · 06-23-2017, 07:25 AM

Quote:

Originally Posted by hdff

I have never seen a 8 402 badge....

You realize that this thread is 7 years old...

actually...no I didn't realize it was 7 yrs old! Lol... I'm way behind! 🤣

**71CHEVYSHORTBED402** · 06-22-2017, 08:04 PM

Feel free to correct, but there's no rhyme or reason for it. They did this to confuse the enthusiasts.

The SPID reads 400 CI. but it's 402 CI.

The emissions sticker reads 402 CI.

They probably figured 400 badges look cooler.

I can't really say they were wrong.

The owners manual calls it a 400 engine and 402 piston displacement.

A 396 SPID may actually have a 402 engine, yikes, I mean displacement. The same may apply for a 396 badge.

Can't speak for how much a 402 is punched out, but I can say it doesn't mean more HP. While I can't speak for years, the heads on at least some 396 engines had larger ports than at least some 402 engines. 10.1 compression versus 8.5/1. That's how I remember it anyway.

schovil69 · 06-23-2017, 10:10 AM

So, seven years have passed. How 'bout an update on this truck?

09-28-2010, 11:50 PM	#1
05crewcab Registered User Join Date: Mar 2010 Location: Minnetonka, MN Posts: 409	8-400 badge...what exactly does it mean? Just want to make sure of something. the 8-400 badge came out in 71 for the big block trucks even though they were infact 402ci, and, eventhough the '70 trucks were 402's, they still got the 8-396 badge correct? And, the small block 400 was never offered in the pre-'73 trucks, true? I ask because I might buy this truck below (for the motor and tranny, and onl y if I can get it cheaper) and can't quite make out the size of the motor in the pic, and I think it is a '72, not a '70: http://minneapolis.craigslist.org/hn...955810491.html __________________ 1971 C-20 350/350

09-28-2010, 11:56 PM	#2
too much stuff Roadtrip! Join Date: Feb 2003 Location: Grand Rapids MN Posts: 13,720	Re: 8-400 badge...what exactly does it mean? That is a 72 big block. (402) In 1970 they were badged as 400 thru 72. And you are correct the 400 small block wasn't offered in these trucks. That looks like a good buy. Better hurry, won't last long. __________________ 67 gmc custom lwb dakota truck. Sold...And bought back 69 swb 4x4 project (in progress) 70 c-10 lwb texas truck 70 4x4/BB/bkts/posi/tach(retired) 70 swb (wifes) 70 jimmy camper 71 K-5 factory 2wd 71 cheyenne 4x4/tach/posi/ plow rig 71 Cheyenne20 BB, buckets, tach, tilt, 4 speed 72 jimmy CST wyoming rig 72 jimmy Colorado rig 72 lifted texas 4x4 3/4 ton burb 65 fury conv. 383/auto 65 chrysler 300 "L" 413 auto

09-29-2010, 10:29 AM	#6
05crewcab Registered User Join Date: Mar 2010 Location: Minnetonka, MN Posts: 409	Re: 8-400 badge...what exactly does it mean? So, if the guy doesn't have a key for it, how am i to get it running? bridge a wire from the battery to the starter? then likewise, how do i get it to stop running? block the carb? Or is there an easier way? __________________ 1971 C-20 350/350

09-29-2010, 01:41 AM	#8
sleepertruck72 Registered User Join Date: Nov 2007 Location: Turlock California 95380 Posts: 2,075	Re: 8-400 badge...what exactly does it mean? I would buy it __________________ 72 C20 Longbed 05 1500 Z71 Last edited by sleepertruck72; 09-29-2010 at 01:42 AM.

09-29-2010, 05:21 PM	#9
shiner2001 Registered User Join Date: Sep 2010 Location: Fort Worth, TX Posts: 222	Re: 8-400 badge...what exactly does it mean? I'm new around here, but I'm pretty sure that the screw in the upper part of the door, just below the vent window handle tells you it's a 72. Obviously, that's assuming it's all original, but it's a start. Someone correct me if I'm wrong on that one... __________________ Derek 72 Chevy Cheyenne Super LWB 454 SS LS6 90 GMC Suburban V2500 350 ----------- 64 Chevy El Camino 357 73 Jeep Wagoneer 360 78 Jeep Cherokee 360 79 Scout II 345 88 Jeep Wrangler 4.2L 91 Jeep Wrangler 4.3L 98 Lincoln Mark VIII 4.6L 01 GMC Yukon 5.3L *"If it's not broken, fix it 'till it is!"*

09-29-2010, 05:41 PM	#10
Rodk65 Registered User Join Date: Apr 2010 Location: Holmen, WI Posts: 212	Re: 8-400 badge...what exactly does it mean? Its a 72. He sent me the VIN and a couple of pictures. __________________ ROD 1969 K10 4x4 Short Fleet. Tuned Port Injection 350/700R4, Cruise, tilt and factory A/C. 1971 C20 Camper Special. 350/350. SOLD 2002 Chevy Tahoe LT Last edited by Rodk65; 09-29-2010 at 05:42 PM.

09-29-2010, 05:57 PM	#11
tkeduk8r Senior Member Join Date: Apr 2001 Location: Alexandria, MN Posts: 1,462	Re: 8-400 badge...what exactly does it mean? BUY IT before i have to!!! bb, tilt, D60, fact aux tank, vintage turbines... needs a hom eto some one on this board... --Mike __________________ 63 C20 2WD, 230/SM420/4.11 73K 68 C30 dump truck, 327,SM425,4.56 66K original 68 C10 2WD SWB Stepper, 250/3-tree/3.73 66K.... Wifes 68 Buick Skylark Custom Conv., 350/TH400/2.56 In our family since '79 69 GMC 1500 SWB 2WD, 350/TH350/3.73 posi... 70 K10 SWB 4X4 4-sp,ps, pb, tilt, buckets, console, sliding back window (Need AC parts) WIP 72 Chevy K20 4x4 350/350/205/4.56 donor 72 Vette 350/M21/3.70 posi, triple black and super fast 84 Olds Cutlass Brougham 350/2004r/4.11 was Dad's

09-29-2010, 06:39 PM	#13
Rodk65 Registered User Join Date: Apr 2010 Location: Holmen, WI Posts: 212	Re: 8-400 badge...what exactly does it mean? I'm thinking about it. I'm trying to figure out what to do about the title, or just switch cabs. Just have to make the 5-6 hour road trip. __________________ ROD 1969 K10 4x4 Short Fleet. Tuned Port Injection 350/700R4, Cruise, tilt and factory A/C. 1971 C20 Camper Special. 350/350. SOLD 2002 Chevy Tahoe LT

10-03-2010, 12:16 AM	#14
Rodk65 Registered User Join Date: Apr 2010 Location: Holmen, WI Posts: 212	Re: 8-400 badge...what exactly does it mean? I'm glad someone went to get it. Were any of his other truck any good? __________________ ROD 1969 K10 4x4 Short Fleet. Tuned Port Injection 350/700R4, Cruise, tilt and factory A/C. 1971 C20 Camper Special. 350/350. SOLD 2002 Chevy Tahoe LT

10-03-2010, 04:02 AM	#15
05crewcab Registered User Join Date: Mar 2010 Location: Minnetonka, MN Posts: 409	Re: 8-400 badge...what exactly does it mean? The '70 c-20 was ok, probably the same level as this truck, and I didn't look to closely at the '64's, except the c-20 dually looked like it was a 67-72 coil rear frame with a dually HO72 rear axle, no box. This guy is retired and gets 2 to 10 cars daily from people that are running estates or want to clear up the clutter on their farmstead. he generally just scraps them @ about $175 a ton unless they are unique/in better shape than normal. Funny thing...i had just loaded the truck up on the trailer and parked it on the service road next to the freeway to then settle up with the seller, and some dude pulled off the freeway and stopped by my truck. he then went on to say that he saw the truck loaded up and had to stop because he has a '67 small window short box sitting at his place that he wants sold. We exchanged contact info and I said I would post some pics here for him if he'd like. we'll see if he emails me... These trucks are waiting for us obsessive bastards all over the place __________________ 1971 C-20 350/350

10-03-2010, 11:31 AM	#16
too much stuff Roadtrip! Join Date: Feb 2003 Location: Grand Rapids MN Posts: 13,720	Re: 8-400 badge...what exactly does it mean? Glad someone from here got it. Did you get a deal? Lots of good parts there... __________________ 67 gmc custom lwb dakota truck. Sold...And bought back 69 swb 4x4 project (in progress) 70 c-10 lwb texas truck 70 4x4/BB/bkts/posi/tach(retired) 70 swb (wifes) 70 jimmy camper 71 K-5 factory 2wd 71 cheyenne 4x4/tach/posi/ plow rig 71 Cheyenne20 BB, buckets, tach, tilt, 4 speed 72 jimmy CST wyoming rig 72 jimmy Colorado rig 72 lifted texas 4x4 3/4 ton burb 65 fury conv. 383/auto 65 chrysler 300 "L" 413 auto

10-03-2010, 11:37 AM	#17
tkeduk8r Senior Member Join Date: Apr 2001 Location: Alexandria, MN Posts: 1,462	Re: 8-400 badge...what exactly does it mean? GOOD JOB!!!! I wasnt looking forward to marraige counselling if I diverted our trip to the twins game yesterday to go look at it ... --Mike __________________ 63 C20 2WD, 230/SM420/4.11 73K 68 C30 dump truck, 327,SM425,4.56 66K original 68 C10 2WD SWB Stepper, 250/3-tree/3.73 66K.... Wifes 68 Buick Skylark Custom Conv., 350/TH400/2.56 In our family since '79 69 GMC 1500 SWB 2WD, 350/TH350/3.73 posi... 70 K10 SWB 4X4 4-sp,ps, pb, tilt, buckets, console, sliding back window (Need AC parts) WIP 72 Chevy K20 4x4 350/350/205/4.56 donor 72 Vette 350/M21/3.70 posi, triple black and super fast 84 Olds Cutlass Brougham 350/2004r/4.11 was Dad's

10-11-2010, 10:59 AM	#19
Rodk65 Registered User Join Date: Apr 2010 Location: Holmen, WI Posts: 212	Re: 8-400 badge...what exactly does it mean? Congratulations on bringing it back to life. I'm glad someone made the road trip up north to get it. I would have went to look at it, but I still have a truck at Sharpies place in Wyoming I have to pick up. __________________ ROD 1969 K10 4x4 Short Fleet. Tuned Port Injection 350/700R4, Cruise, tilt and factory A/C. 1971 C20 Camper Special. 350/350. SOLD 2002 Chevy Tahoe LT Last edited by Rodk65; 10-12-2010 at 09:00 AM.

06-22-2017, 08:04 PM	#23
71CHEVYSHORTBED402 Senior Member Join Date: Feb 2009 Location: Northern Nevada Posts: 7,218	Re: 8-400 badge...what exactly does it mean? Feel free to correct, but there's no rhyme or reason for it. They did this to confuse the enthusiasts. The SPID reads 400 CI. but it's 402 CI. The emissions sticker reads 402 CI. They probably figured 400 badges look cooler. I can't really say they were wrong. The owners manual calls it a 400 engine and 402 piston displacement. A 396 SPID may actually have a 402 engine, yikes, I mean displacement. The same may apply for a 396 badge. Can't speak for how much a 402 is punched out, but I can say it doesn't mean more HP. While I can't speak for years, the heads on at least some 396 engines had larger ports than at least some 402 engines. 10.1 compression versus 8.5/1. That's how I remember it anyway. __________________ Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assembly kit for restoring the (a) truck from the ground up. My build thread, and more on the assembly kit https://67-72chevytrucks.com/vboard/...d.php?t=730025

06-23-2017, 10:10 AM	#24
schovil69 Registered User Join Date: Oct 2013 Location: Lincoln, NE Posts: 115	Re: 8-400 badge...what exactly does it mean? So, seven years have passed. How 'bout an update on this truck?



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.