Replacing subframe for a BBC?
#11
Really appreciate the in-depth reply. I'll begin research on "subframe connectors" because I'm not entirely sure what that means, as I am just getting into cars and such. And the info about cams is very helpful, I will make sure to get everything else done first, I suppose. I have a lot to think about! Luckily I have a buddy or two that can help me out with the cam, but any suggestions I can bring to him are great.
For a cam I went with 282/282 (advertised duration) with .530/.530" lift, and 112 LSA. This cam is lopey idle, but will work with a stock torque converter, and makes good power from off idle to 5700 rpm. I am running the stock bottom end forged crank, and TRW forged pistons. It's been a dependable engine, and a great street/strip engine. Don't let people talk you into something huge in a cam, unless you plan to spend most of your time at the drag strip.
#12
Our cars are unibody cars. Meaning they don't have a real frame. The shell is built with the rear frame sections welded in as part of it structure. Then on the assembly line the front subframe assembly was bolted to the shell. Almost everything made today is unibody.
The other way is to build a frame and set the body down on top of it.
The red lines represent where SFC's would go. They basically stiffen the car because the roof, doors and floor aren't up to the task. I believe in adding these at any power level. It just makes the car "feel" better. Plus some of the squeaks and rattles go away.
I stole this from someone else and colored on it.
The other way is to build a frame and set the body down on top of it.
The red lines represent where SFC's would go. They basically stiffen the car because the roof, doors and floor aren't up to the task. I believe in adding these at any power level. It just makes the car "feel" better. Plus some of the squeaks and rattles go away.
I stole this from someone else and colored on it.
#17
Hate to beat this dead horse, but just so no mistakes are made, this is what I need, right?
Competition Engineering 3113 Competition Engineering Subframe Connectors
Competition Engineering 3113 Competition Engineering Subframe Connectors
#18
Hate to beat this dead horse, but just so no mistakes are made, this is what I need, right?
Competition Engineering 3113 Competition Engineering Subframe Connectors
Competition Engineering 3113 Competition Engineering Subframe Connectors
The only concern with boltin connectors is the bolts. Often these old cars have never had the rear spring bracket bolts, or subframe bolts removed, so there's always the chance they're rusted in and wont come out, or break. Just be prepared to fix what wont come out!
#19
Yes, those are the subframe connectors. Those are boltins front and rear, so no welding needed. I've heard of some guys taking the weld in connectors to their local exhaust shop and having them do the welding, if you choose to go that route.
The only concern with boltin connectors is the bolts. Often these old cars have never had the rear spring bracket bolts, or subframe bolts removed, so there's always the chance they're rusted in and wont come out, or break. Just be prepared to fix what wont come out!
The only concern with boltin connectors is the bolts. Often these old cars have never had the rear spring bracket bolts, or subframe bolts removed, so there's always the chance they're rusted in and wont come out, or break. Just be prepared to fix what wont come out!
#20
I own a set of the weld in ones like the ones you posted. Wanna know why they aren't in a car? Be Comp Engineering (yeah right engineering) designed them to only work with their own rear frame replacements. And those require you to narrow the tank. AND the SFC must be run through the floor of the car. AND relocate the front of the spring to bolt into the connector. Easy driveway project right? If you tracked back to my very first poet here, you would find me asking if anyone had ever do this. I have yet to find ANYONE who has done it. I have seen a pic or two that others have found on the net. But no one that can tell me what happened. Honestly I want to use them because they move the spring eye over and I could fit bigger rubber along with the mini tub. That would save hundreds.