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01-14-2005, 07:21 PM
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#1 |
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outta the car velocityboy
Join Date: Nov 2004
Location: Scotland
Posts: 112
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2.25" Duals
Happy Friday,
It's garage time!!! woohoo. Righto so kicked over the truck today and just about lost my ears drums.  Interior resonance was a killer. Turns out there is now a lovely hole in one of my pipes near the rear wheel (usual place I guess).So am needing to change the exhaust. It has 3" duals on it with resonator tips only running from a set of hedman headers. I'm sure it was great for the PO with the Big block & blower in it but its a bit loud n am sure way too big bore. However PO put a 78 vette pace car engine in it. I contacted dynomax they reckon a 2.25" dual system will be fine for my requirements now. Are any of you guys running a dual 2.25" system? Also will a 73 system fit,as I seem to many of these ready to fit header back kits for 73 onwards but nothing for our trucks....  Any feedback appreciated..........
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  ..give it a turn here, take some wedge out there, we'll win some races... 
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01-14-2005, 08:30 PM
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Formerly yellow72custom
Join Date: May 2001
Location: Austin, TX
Posts: 7,531
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If your truck has coil springs, i doubt it. Its possible that the '73 up system would fit if you have leaves. The pipe routing gets tricky around the rearened and trailing arms.
A 2.25" system should be fine for a mild-stock 350. Personally, i've had good luck just taking my stuff to local muffler shops and having them custom make a system....it will cost more than a pre-fit system but you can get them fully welded instead of clamped and you don't have to mess with it yourself. If you want some reasonably priced mufflers with a mellow tone that isn't too loud, go with Dynomax Super Turbos...enough of a rumble to let people know you have a V8, but still plenty quiet so it dosne't get annoying.
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'72 Chevy C10 Mild 350/TH350/3.07. Ochre/White. Old high school ride. '70 GMC C2500 '62 327 4bbl/SM465/4.56-geared Dana 60. White/White. Project or parts truck. '97 Saturn SL DD. 1.9/5-speed. 40+ highway mpg |
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01-15-2005, 08:01 AM
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#3 |
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outta the car velocityboy
Join Date: Nov 2004
Location: Scotland
Posts: 112
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Thanks Yellow,
Anyone else got some feedback? Would be looking for low & mid range torque if I do any engine mods as opposed to top end horsepower and I understand smaller bore assists this......Cheers Lee
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..give it a turn here, take some wedge out there, we'll win some races...
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01-15-2005, 08:20 AM
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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As much as I hate LMC, look at there prebent pipes. I can't remember the size of them, but I have only heard good things about there pipes and at a good price too.
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01-15-2005, 09:15 AM
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Senior Member
 
Join Date: Dec 2003
Location: Pampa, Texas
Posts: 1,554
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i have 2.5" pipes ran all the way back with coil springs and no routing problems at all..if this thing has a big block in it i would at least go with 2.5" if not 3" depending on how hot the motor is..
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https://www.ebay.com/itm/295742064443 |
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01-15-2005, 10:14 AM
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#6 |
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Watch out for your cornhole !
Join Date: Jun 2003
Location: Azle, Texas
Posts: 14,162
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That 78 Vette 350 isn't a powerhouse no matter how you look at it. I'd definitely run 2.25 inch system. Myself, I run 2.25 on small blocks and 2.5 on big blocks.
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