The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Picture of factory tail pipe exit on 71ish SWB anyone??

**Steeveedee** · 11-02-2022, 10:01 PM

I've seen it mentioned here somewhere that trucks with small block engines only ever had single exhaust with a y-pipe. I worked on a ton of vehicles from '70 to '72, and only recall a very few dual exhaust vehicles, but no SBC trucks, and I can count on one finger a SBC 400 with dual exhaust, in an Impala. Rare bird, I guess. BBC trucks were always dual exhaust in those years, IIRC.

11-02-2022, 10:01 PM	#12
Steeveedee Who Changed This? Join Date: Jan 2013 Location: Simi Valley, CA Posts: 10,127	Re: Picture of factory tail pipe exit on 71ish SWB anyone?? I've seen it mentioned here somewhere that trucks with small block engines only ever had single exhaust with a y-pipe. I worked on a ton of vehicles from '70 to '72, and only recall a very few dual exhaust vehicles, but no SBC trucks, and I can count on one finger a SBC 400 with dual exhaust, in an Impala. Rare bird, I guess. BBC trucks were always dual exhaust in those years, IIRC. __________________ ~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA