how to tell if my 68 is a stock bb - The 1947 - Present Chevrolet & GMC Truck Message Board Network

schild09 · 01-27-2010, 11:40 PM

i had a posting similar to this but asking what the cst came with, now i am trying to find out how to tell if it is a stock bb or not, could be a stupid question but i am willing to hear that if i can learn something, this is my first classic truck so i am trying to get educated. i dont have the info on the backside of the glove box door, and if it was a bb it was swapped to a 454 and 700r4 (which is mean i might add). i tried vin but all i could seem to find is if it was a v6 or v8. thanks for any help.

*Dylan · 01-27-2010, 11:47 PM

I could be wrong but I don't think 68's came with a 454. I think that may have started in 69, or maybe that's a different engine I'm thinking of. But I do know they didn't come with 700r4s. So that's not stock by any means. Do you have a picture of said engine?

redbaron69 · 01-27-2010, 11:48 PM

without the spid it maybe hard to tell. i would pull back the carpet or mat and look for a high hump. pretty sure all factory big blocks had a high hump. but this could have been changed at some point.

*Dylan · 01-27-2010, 11:52 PM

Just got some numbers and they are "396 in 68, 402 from 69-72, 454 in 73" thanks Josh.

schild09 · 01-28-2010, 12:06 AM

Quote:

Originally Posted by *Dylan

Just got some numbers and they are "396 in 68, 402 from 69-72, 454 in 73" thanks Josh.

sorry if any confusion but i was saying if it was a stock big block then they pulled the 396 and put in a 454 along with a 700r4, i do know they didnt come with 454 stock would have been the 396. i know i said i was new but i still tried to look around and got somewhat speed up on the truck before i bought it. do you think i could go to a GMC/chevy dealer give them the vin and they could tell me what it came with. i just want to know when if it came stock as a bb

***Josh*** · 01-28-2010, 12:15 AM

Only way to tell for sure what v8 it came with is the SPID on the glove box door....

schild09 · 01-28-2010, 12:23 AM

well thanks for the help, i just cant seem to win on finding things out about this truck without the SPID. o well i guess, ill just keep wrenchin and keep truckin. once again thanks for all the input. and for holding back on any comments about my post. im just trying to see if what i was told about the truck is true, but beings as all the parts that were sent with the truck just arent seeming to fit for me i am starting to wonder. i love the truck either way though

**too much stuff** · 01-28-2010, 01:09 AM

Maybe you can find the build sheet in the seat springs if the seat is original. It is a long shot.
Is there a heat shield on the pass side floorpan underneath for exhaust? Does it have a remote cannister on the inner fender for power steering fluid? Possibly dual exhaust brackets underneath? Maybe a few clues there yet. Good luck...

01-27-2010, 11:40 PM	#1
schild09 Registered User Join Date: Jan 2010 Location: chesapeake, va Posts: 24	how to tell if my 68 is a stock bb i had a posting similar to this but asking what the cst came with, now i am trying to find out how to tell if it is a stock bb or not, could be a stupid question but i am willing to hear that if i can learn something, this is my first classic truck so i am trying to get educated. i dont have the info on the backside of the glove box door, and if it was a bb it was swapped to a 454 and 700r4 (which is mean i might add). i tried vin but all i could seem to find is if it was a v6 or v8. thanks for any help.

01-27-2010, 11:47 PM	#2
*Dylan Mean Buzzin' Half Dozen Join Date: Mar 2008 Location: Orlando, Florida Posts: 1,081	Re: how to tell if my 68 is a stock bb I could be wrong but I don't think 68's came with a 454. I think that may have started in 69, or maybe that's a different engine I'm thinking of. But I do know they didn't come with 700r4s. So that's not stock by any means. Do you have a picture of said engine? __________________ "War is an ugly thing, but not the ugliest of things. The decayed and degraded state of moral and patriotic feeling which thinks that nothing is worth war is much worse. The person who has nothing for which he is willing to fight, nothing which is more important than his own personal safety, is a miserable creature and has no chance of being free unless made and kept so by the exertions of better men than himself." MY TRUCK (Now for sale) 1967 C10 SWB *Dylan* IIMY?

01-27-2010, 11:48 PM	#3
redbaron69 Registered User Join Date: Jan 2009 Location: marion nc Posts: 588	Re: how to tell if my 68 is a stock bb without the spid it maybe hard to tell. i would pull back the carpet or mat and look for a high hump. pretty sure all factory big blocks had a high hump. but this could have been changed at some point. __________________ 69 short fleet 350/350 "under construction" 70 short step 307/3 speed

01-27-2010, 11:52 PM	#4
*Dylan Mean Buzzin' Half Dozen Join Date: Mar 2008 Location: Orlando, Florida Posts: 1,081	Re: how to tell if my 68 is a stock bb Just got some numbers and they are "396 in 68, 402 from 69-72, 454 in 73" thanks Josh. __________________ "War is an ugly thing, but not the ugliest of things. The decayed and degraded state of moral and patriotic feeling which thinks that nothing is worth war is much worse. The person who has nothing for which he is willing to fight, nothing which is more important than his own personal safety, is a miserable creature and has no chance of being free unless made and kept so by the exertions of better men than himself." MY TRUCK (Now for sale) 1967 C10 SWB *Dylan* IIMY?

01-28-2010, 12:15 AM	#6
*Josh* He's got mean nasty FANGS! Join Date: Dec 1999 Location: Rockwell, NC Posts: 6,509	Re: how to tell if my 68 is a stock bb Only way to tell for sure what v8 it came with is the SPID on the glove box door.... __________________ 2004 K2500 Burb 1999 C3500 1985 Cutlass Supreme 1969 C-10 1967 C-10 Panel josh@67-72chevytrucks.com

01-28-2010, 12:23 AM	#7
schild09 Registered User Join Date: Jan 2010 Location: chesapeake, va Posts: 24	Re: how to tell if my 68 is a stock bb well thanks for the help, i just cant seem to win on finding things out about this truck without the SPID. o well i guess, ill just keep wrenchin and keep truckin. once again thanks for all the input. and for holding back on any comments about my post. im just trying to see if what i was told about the truck is true, but beings as all the parts that were sent with the truck just arent seeming to fit for me i am starting to wonder. i love the truck either way though

01-28-2010, 01:09 AM	#8
too much stuff Roadtrip! Join Date: Feb 2003 Location: Grand Rapids MN Posts: 13,720	Re: how to tell if my 68 is a stock bb Maybe you can find the build sheet in the seat springs if the seat is original. It is a long shot. Is there a heat shield on the pass side floorpan underneath for exhaust? Does it have a remote cannister on the inner fender for power steering fluid? Possibly dual exhaust brackets underneath? Maybe a few clues there yet. Good luck... __________________ 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



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