Carb spacers, BBC or SBC the same? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Accelo** · 03-05-2023, 02:28 PM

I have been attempting to figure out if the BBC and SBC for our trucks are the same part. Looks like it to me with the hoses are the difference between them.
I also notice some have the spark arrester and some do not. Never figured out why and when GM changed. Full disclosure, I copied the photos from the f/s section.

I don't have a parts manual to look it up. Any input is appreciated.

**JQ-72** · 03-11-2023, 04:35 PM

68 and 69 396 had a shorter spacer, about 2" in height. The 70-72 402 had the spacer that is pictured above. For 70-72, the spacer is the same on BB and SB but the rubber hose is longer on the SB.

**special-K** · 03-12-2023, 12:00 AM

^^^ Good info. I read the title and was going to post a "yes" if both have QuadraJet. I call a carb spacer what goes under the carb. I call this part an air filter (housing) spacer.

03-05-2023, 02:28 PM	#1
Accelo Senior Member Join Date: Mar 2015 Location: washington Posts: 2,308	Carb spacers, BBC or SBC the same? I have been attempting to figure out if the BBC and SBC for our trucks are the same part. Looks like it to me with the hoses are the difference between them. I also notice some have the spark arrester and some do not. Never figured out why and when GM changed. Full disclosure, I copied the photos from the f/s section. I don't have a parts manual to look it up. Any input is appreciated. Attached Images

03-11-2023, 04:35 PM	#2
JQ-72 Senior Member Join Date: Feb 2001 Location: Killen, Alabama USA Posts: 3,628	Re: Carb spacers, BBC or SBC the same? 68 and 69 396 had a shorter spacer, about 2" in height. The 70-72 402 had the spacer that is pictured above. For 70-72, the spacer is the same on BB and SB but the rubber hose is longer on the SB. __________________ 72 Cheyenne Super swb. Factory 402/400,tach,posi,AM/FM, A/C. Adding cruise, 8-track 72 Cheyenne Super swb. 350/350 A/C, bucket seats 72 Cheyenne swb. Factory 402/400, tilt, posi, A/C 72 Cheyenne Super K-10. 350/4 spd., posi. 72 Suburban 350/350 tilt, tach, AM/FM, A/C, luggage rack 72 GMC Sierra lwb. 350/350, A/C. medium green/olive interior Last edited by JQ-72; 03-12-2023 at 10:41 AM.

03-12-2023, 12:00 AM	#3
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,851	Re: Carb spacers, BBC or SBC the same? ^^^ Good info. I read the title and was going to post a "yes" if both have QuadraJet. I call a carb spacer what goes under the carb. I call this part an air filter (housing) spacer. __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~



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