Exhaust for my 84 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

softballnrd27 · 08-02-2007, 08:02 AM

As some of you know I am in the process of swapping out the 305 in my truck for a 454. The current exhaust set-up is crappy bc it hangs below the frame. I only have a single hump tranny x-member. Has anyone fabricated their own xmember? Can I get some pics of the exhaust under the truck and doem side shots? What headers are you big block guys using? I want my exhaust fully tucked in the frame if possible, I got tired of hitting the headers in my old truck. My plans are to try and fit a x-pipe in there with 3" tubing/mufflers. The truck will be lowered at least 4/6.

streetstar · 08-02-2007, 12:34 PM

Doug Thorley headers are highly regarded

Ivan D. · 08-02-2007, 07:09 PM

No '84, but still a single-hump tranny crossmember - solution to my problems turned out to be in the form of Headman Hedders S-pipes. If I were to run a crossover and I had a garage I'd drop the tranny crossmember, get another one off a junker truck, cut both in half, match them up and weld them back again, so I end up with one double-hump crossmember and one double-dip crossmember. Which one I use would depend on the headers - high headers (like I currently have) would get the double-dip crossmember as the exhaust would have a straight shot towards the back along the tranny and over the crossmember, low headers would require use of the double-hump crossmember as piping will need to be routed under it. Hope that helps:

08-02-2007, 08:02 AM	#1
softballnrd27 Always a work in progress Join Date: Jun 2007 Location: Harker Heights, TX Posts: 1,599	Exhaust for my 84 As some of you know I am in the process of swapping out the 305 in my truck for a 454. The current exhaust set-up is crappy bc it hangs below the frame. I only have a single hump tranny x-member. Has anyone fabricated their own xmember? Can I get some pics of the exhaust under the truck and doem side shots? What headers are you big block guys using? I want my exhaust fully tucked in the frame if possible, I got tired of hitting the headers in my old truck. My plans are to try and fit a x-pipe in there with 3" tubing/mufflers. The truck will be lowered at least 4/6. __________________ USMC Retired Never trust a man who can't laugh at his own fart! 2010 Silverado Crew Cab 73 SWB 5.3/4l80e Build Thread: http://67-72chevytrucks.com/vboard/s...d.php?t=695168 Last edited by softballnrd27; 08-02-2007 at 08:43 AM.

08-02-2007, 12:34 PM	#2
streetstar Registered User Join Date: May 2007 Location: Moore, Oklahoma Posts: 2,396	Re: Exhaust for my 84 Doug Thorley headers are highly regarded

08-02-2007, 07:09 PM	#3
Ivan D. glamoros piece o' lowlife Join Date: Mar 2007 Location: Redford, MI Posts: 1,164	Re: Exhaust for my 84 No '84, but still a single-hump tranny crossmember - solution to my problems turned out to be in the form of Headman Hedders S-pipes. If I were to run a crossover and I had a garage I'd drop the tranny crossmember, get another one off a junker truck, cut both in half, match them up and weld them back again, so I end up with one double-hump crossmember and one double-dip crossmember. Which one I use would depend on the headers - high headers (like I currently have) would get the double-dip crossmember as the exhaust would have a straight shot towards the back along the tranny and over the crossmember, low headers would require use of the double-hump crossmember as piping will need to be routed under it. Hope that helps: __________________ The more I drink, the more I drink, the more I drink... diesel, reg cab, long bed, 4 across the rear, single stack, wooden stakes, and lotsa lights - the Hay Express



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.