Removing last 8" off front subframes.....thoughts?
11-15-2012, 12:10 PM
#51
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Car: 87 firebird did V8 swap
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Re: Removing last 8" off front subframes.....thoughts?
Ok I want to run dual exhaust by running a tube done each side under the car could I etch out a whole just big enough to run my drivers side exhaust tubing threw the frame it I braced it with some steel
04-24-2013, 10:53 AM
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Car: 1984 Z28
Engine: SLOW carbed ls
Transmission: TH400 with brake, 8" PTC converter
Axle/Gears: moser 9" 4.11
Re: Removing last 8" off front subframes.....thoughts?
so finally got it up on a lift to cut cut cut.
I had to cut a "v" notch out of the passenger side subframe stub that was left in order to have clearance for the 3.5" collectors I'll be running. Planning on plating the ends and welding roll cage tubing from that to the jegs perimeter subframe connectors and it should be stronger than stock. Some of that sheetmetal is very thin that was cut out.
I had to cut a "v" notch out of the passenger side subframe stub that was left in order to have clearance for the 3.5" collectors I'll be running. Planning on plating the ends and welding roll cage tubing from that to the jegs perimeter subframe connectors and it should be stronger than stock. Some of that sheetmetal is very thin that was cut out.
04-26-2013, 12:24 AM
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Car: 1984 Z28
Engine: SLOW carbed ls
Transmission: TH400 with brake, 8" PTC converter
Axle/Gears: moser 9" 4.11
Re: Removing last 8" off front subframes.....thoughts?
I'm building a set of stepped headers out of mandrel J bends.
04-27-2013, 07:21 AM
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Car: 1984 Z28
Engine: SLOW carbed ls
Transmission: TH400 with brake, 8" PTC converter
Axle/Gears: moser 9" 4.11
Re: Removing last 8" off front subframes.....thoughts?
Yes as matt said they're ls headers and I built stepped headers which no one offers iirc. Either way the subframe had to come out for the size collectors I chose and to have any kind of ground clearance for street driving.
05-07-2013, 12:10 AM
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Car: 1984 Z28
Engine: SLOW carbed ls
Transmission: TH400 with brake, 8" PTC converter
Axle/Gears: moser 9" 4.11
Re: Removing last 8" off front subframes.....thoughts?
A few posts up say what I did. Only have pics of it plated off. Nothing to see really. Too busy with my business to take anymore at the moment. Give me a week or so to get it back up in the air for pics
Last edited by xpndbl3; 05-07-2013 at 12:14 AM.
06-12-2013, 02:22 PM
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Car: 1986 Iroc
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Re: Removing last 8" off front subframes.....thoughts?
Bump. Started cutting into mine yesterday. Have any finished pics?
06-20-2013, 07:53 AM
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Car: 1986 Iroc
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Re: Removing last 8" off front subframes.....thoughts?
Finished my sfc and frame mod. I will post pics tonight.
06-20-2013, 11:34 AM
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Car: 1982 Camaro
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Re: Removing last 8" off front subframes.....thoughts?
Box that area and send a piece of 1 5/8 tubing to the front lca eyelet from that boxed area. It's a straight shot and gives a lot of room for headers, TA etc.... Plus you can ditch the heavy sfc's then. The round tubing will give a great base to make a removeable tubular trans crossmember and also if you need to add a sperate TA mount.
06-22-2013, 10:04 PM
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Car: 1984 Z28
Engine: SLOW carbed ls
Transmission: TH400 with brake, 8" PTC converter
Axle/Gears: moser 9" 4.11
Re: Removing last 8" off front subframes.....thoughts?
Thanks its on my list of things to do soon. Haven't had a chance to touch the car since thirdgenfest due to working too much. I'll have to measure how much tubing to get soon. Definitely need to make a trans crossmember. Still have your pics saved....I'll try my best to make it the same way. 
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