6066 (1960-1966) GMC Truck Club

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- GMC V6 and V12 Engines (https://6066gmcclub.com/forumdisplay.php?f=9)

- - Exhaust 305 v6 (https://6066gmcclub.com/showthread.php?t=50741)

HandmedownGMC

November 14th, 2019 12:02 AM

Exhaust 305 v6

Hi everyone,
I’m new to this forum but I have a ‘68 GMC C25 with an original 305 v6. It sat for many years and I need to replace some of the worn out/rusty parts. It runs and exhaust isn’t rotted out yet but what is everyone using for an economical exhaust setup from the motor back?

bigblockv6

November 14th, 2019 01:22 AM

Re: Exhaust 305 v6

I have a 68 K2500 and run 2 1/2 inch dual exhaust with 50 series Flowmaster mufflers.

TJ's GMC

December 8th, 2019 02:08 AM

Re: Exhaust 305 v6

Went with 2.25 dual exhaust on my 305 with flowmaster 40's.

Here's an old video. Skip to 1:05 to hear the exhaust.

https://www.youtube.com/watch?v=RCfanx30JO8

tbucketnut

December 8th, 2019 04:42 AM

Re: Exhaust 305 v6

Has one heck of a nice idle sound. We came through Cave Junc. earlier this year. Really nice area.
Steve

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