how do tell if truck is factory big block - The 1947 - Present Chevrolet & GMC Truck Message Board Network

hddavis · 05-08-2010, 01:25 PM

need help asap going to look at truck in one hour has BB but no spid in glovebox guy says he does not know

**68350** · 05-08-2010, 02:06 PM

removable tranny hump, heat shield on passenger side of cab, dual exhaust, look at the suffix code on the motor to see if it could be the original engine. Those are kinda the easy ones.

burb71 · 05-08-2010, 02:08 PM

Look for factory mounted Daul Exhaust hangers, 6 cyl & small block V8s did not come with dual.

Should have the high hump floor.

Should have a Heat Sheld under the hood on the Lower Fire Wall / Upper Floor Board of the pass side, it a sheet of metal about 10 inches long and 3 inches wide, held in with 2 screws.

Also look under the hood on the drivers side inner Fender, the factory put a engine timing decal there, read it, in the upper left hand corner is the engine size.

hddavis · 05-08-2010, 06:45 PM

thanks it looks good in photo but it was in bad shape full of bondo,the guy started out at 5000.00 and by the time i left he came down to 3000.00 but i felt that it was still to high. i may have gave 1500.00 or 2000.00 just because it was short bed cheyenne super here is the link if anyone is interested

http://springfield.craigslist.org/cto/1725632191.html

**71blksuper4x4** · 05-08-2010, 06:48 PM

Yep, it is probably not originally a big block truck with it having a 454 in it, but could have been at some point. NO 454's were put in our style trucks. Trevor

**68350** · 05-08-2010, 06:50 PM

Tailgate isn't a cheyenne super version, so that might just be a pieced together truck. Did it have the woodgrain dash and glovebox door?

hddavis · 05-09-2010, 02:28 PM

no it does not have woodgrain on dash just all of the cheyenne super emblems its one of those, you never know untill you go check it out for yourself things. i guess i will stay with my 71 lwb c10 for know. once again thanks for the replies.

05-08-2010, 01:25 PM	#1
hddavis Registered User Join Date: Mar 2010 Location: Rogersville, MO Posts: 33	how do tell if truck is factory big block need help asap going to look at truck in one hour has BB but no spid in glovebox guy says he does not know

05-08-2010, 02:06 PM	#2
68350 Senior Member Join Date: Jan 2002 Location: Williston, ND Posts: 2,999	Re: how do tell if truck is factory big block removable tranny hump, heat shield on passenger side of cab, dual exhaust, look at the suffix code on the motor to see if it could be the original engine. Those are kinda the easy ones. __________________ 68 Chevy CST/10, 50th Anniversary, 327/th400, 373 posi, buckets 68 GMC Shortbox Stepside, 402/th400, Tilt, Tach, Bucket Seats, 3.08 Positraction 69 Chevy Camaro SS, 383, 4 speed, positraction 70 Chevy El Camino SS396, Triple Black, 454/th400, Tach 70 Chevy Shortbox Stepside 4x4, 350/th350, Tilt, Tach, Cab Lights, Bumper Guards, Tow Hooks 70 Chevy 3/4 Longbox, 350/auto, 70k, SURVIVOR 71 Chevy Blazer, CST, 350/auto 71 GMC Sierra K2500, 454, 4 speed, 4.10 posi, 37s 71 Custom/30, Open Road, 350/th400, tilt 72 Chevy Shortbox Fleetside, 496 Stroker/th400, Tilt, Tach, Bucket Seats, 3.42 Posi 72 GMC Sierra Grande 2500. 427/th400, tilt, a/c, tool and stowage, buckets/console, 3.54 posi

05-08-2010, 02:08 PM	#3
burb71 Active Member Join Date: Oct 2002 Location: Ft. Myers, Fl Posts: 1,716	Re: how do tell if truck is factory big block Look for factory mounted Daul Exhaust hangers, 6 cyl & small block V8s did not come with dual. Should have the high hump floor. Should have a Heat Sheld under the hood on the Lower Fire Wall / Upper Floor Board of the pass side, it a sheet of metal about 10 inches long and 3 inches wide, held in with 2 screws. Also look under the hood on the drivers side inner Fender, the factory put a engine timing decal there, read it, in the upper left hand corner is the engine size.

05-08-2010, 06:45 PM	#4
hddavis Registered User Join Date: Mar 2010 Location: Rogersville, MO Posts: 33	Re: how do tell if truck is factory big block thanks it looks good in photo but it was in bad shape full of bondo,the guy started out at 5000.00 and by the time i left he came down to 3000.00 but i felt that it was still to high. i may have gave 1500.00 or 2000.00 just because it was short bed cheyenne super here is the link if anyone is interested http://springfield.craigslist.org/cto/1725632191.html

05-08-2010, 06:48 PM	#5
71blksuper4x4 SWB 4x4 Collector Join Date: Jun 2001 Location: Osage City, KS Posts: 5,156	Re: how do tell if truck is factory big block Yep, it is probably not originally a big block truck with it having a 454 in it, but could have been at some point. NO 454's were put in our style trucks. Trevor __________________ TREVOR 1970 CST swb 4x4 (speedwarning,cruise,tilt,tach,8track, original red shoulder belts,tow hooks) 1972 Jimmy (soon to be Hickey cloned) 1971 Cheyenne Super 4x4 swb (tilt,tach,buckets, original blue shoulder belts,am/fm,cruise,tow hooks, dealer 8 track) 1972 Cheyenne Super K20 4x4 Custom Camper (tilt, tach, am/fm, tow hooks, bed toolbox, aux gas tank 1972 Cheyenne Super Crew Cab K30 4x4 Duramax, Allison, np205, buckets, tow hooks (CURRENT PROJECT) http://67-72chevytrucks.com/vboard/s...d.php?t=624819 1989 V3500 Crew Cab (454tbi, NV4500, np205) 1970 Chevelle SS (LS5 454,th400,8track,buckets,tach) :2004 Jeep Wrangler Rubicon (daily driver) WTB: 1968-70 Cruise Control Lever

05-08-2010, 06:50 PM	#6
68350 Senior Member Join Date: Jan 2002 Location: Williston, ND Posts: 2,999	Re: how do tell if truck is factory big block Tailgate isn't a cheyenne super version, so that might just be a pieced together truck. Did it have the woodgrain dash and glovebox door? __________________ 68 Chevy CST/10, 50th Anniversary, 327/th400, 373 posi, buckets 68 GMC Shortbox Stepside, 402/th400, Tilt, Tach, Bucket Seats, 3.08 Positraction 69 Chevy Camaro SS, 383, 4 speed, positraction 70 Chevy El Camino SS396, Triple Black, 454/th400, Tach 70 Chevy Shortbox Stepside 4x4, 350/th350, Tilt, Tach, Cab Lights, Bumper Guards, Tow Hooks 70 Chevy 3/4 Longbox, 350/auto, 70k, SURVIVOR 71 Chevy Blazer, CST, 350/auto 71 GMC Sierra K2500, 454, 4 speed, 4.10 posi, 37s 71 Custom/30, Open Road, 350/th400, tilt 72 Chevy Shortbox Fleetside, 496 Stroker/th400, Tilt, Tach, Bucket Seats, 3.42 Posi 72 GMC Sierra Grande 2500. 427/th400, tilt, a/c, tool and stowage, buckets/console, 3.54 posi

05-09-2010, 02:28 PM	#7
hddavis Registered User Join Date: Mar 2010 Location: Rogersville, MO Posts: 33	Re: how do tell if truck is factory big block no it does not have woodgrain on dash just all of the cheyenne super emblems its one of those, you never know untill you go check it out for yourself things. i guess i will stay with my 71 lwb c10 for know. once again thanks for the replies.

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