'67-'69 Camaro T56 Crossmember
04-29-2013, 08:07 PM
#1
'67-'69 Camaro T56 Crossmember What are you guys using for a T56 crossmember in your '67-'69 Camaro LSx conversions?
I'm installing an LQ9/T56 into my '67 and have looked at the ATS and BMR crossmembers. I'm not going to fab my own, so I'm looking for opinions on these or other brands that allow for the most tunnel and exhaust clearance, as well as adjustability forward or back. Thanks in advance.
I'm installing an LQ9/T56 into my '67 and have looked at the ATS and BMR crossmembers. I'm not going to fab my own, so I'm looking for opinions on these or other brands that allow for the most tunnel and exhaust clearance, as well as adjustability forward or back. Thanks in advance.
05-02-2013, 08:37 PM
#4
i fabed my own , from a universal kit off e-bay , made some triangle shaped 1/4 inch plate and welded nuts to it , bolted to the subframe , cut the middle tube to length, i had to squish the tube to about 1/2 the total diameter
and welded it up , cost around 70 bucks if i remember right , most of the custom ones i found were arround 2- 3 hundred
and welded it up , cost around 70 bucks if i remember right , most of the custom ones i found were arround 2- 3 hundred
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09-10-2013, 10:49 AM
#8
That crossmember should serve you well as long as you validate your engine inclination angle/U-joint working angles and adjust the height of the rear of the transmission accordingly as needed. The only compromise I see you might have to make is with the final ground clearance of your exhaust system if you are going with 3" tubing, since the geometry of the BMR crossmember does not bend up into the pockets of the body that the stock crossmember and the Hooker crossmember rest in. If you are using 2.5" tubing in your exhaust then you should be fine.
09-10-2013, 11:22 AM
#9
That crossmember should serve you well as long as you validate your engine inclination angle/U-joint working angles and adjust the height of the rear of the transmission accordingly as needed. The only compromise I see you might have to make is with the final ground clearance of your exhaust system if you are going with 3" tubing, since the geometry of the BMR crossmember does not bend up into the pockets of the body that the stock crossmember and the Hooker crossmember rest in. If you are using 2.5" tubing in your exhaust then you should be fine.
I had to shim the Trans up about .500" as well as install 4* leaf spring shims to get my pinon angles where I wanted them.
09-10-2013, 11:34 AM
#10
Here's a pic where I was lining up the trans tail housing with the rear diff. You can see the exhaust fits, but there's not much room left.
You can also see where the passenger side header sits much lower than the drivers side. Under $200 on eBay, just had to beat on them with a hammer in 3 places to get them to fit, and I think one of the flanges is slightly warped as well. Ah, eBay. You get what you pay for....
You can also see where the passenger side header sits much lower than the drivers side. Under $200 on eBay, just had to beat on them with a hammer in 3 places to get them to fit, and I think one of the flanges is slightly warped as well. Ah, eBay. You get what you pay for....
09-10-2013, 12:30 PM
#12
Yes, the 3" will always fit but at what distance beyond the bottom of the subframe does it hang down...that will ultimately determine your overall ground clearance. The higher you can stuff it up under the car, the higher your ground clearance will be. If you guys don't mine, post up some side shots of your exhaust systems so I can see the ground clearance you guys currently have. I will then also post up side shots of the entire new Hooker system so everyone can get a good idea as to the ground clearance differences available with various components/systems. Sound reasonable? I actually thing that would be a great sticky for one of you users to create on this site so it remains easily accessible information for all users here that are contemplating swaps or looking to upgrade their systems based on ground clearance as a primary determining factor. Let me know
09-10-2013, 01:04 PM
#14
If you guys don't mine, post up some side shots of your exhaust systems so I can see the ground clearance you guys currently have. I will then also post up side shots of the entire new Hooker system so everyone can get a good idea as to the ground clearance differences available with various components/systems. Sound reasonable?
FWIW, I have seen the pics of the new Hooker headers and they tuck up really tight. Just not sure I'm willing to swap out my new Holley oil pan, Dirty Dingo Sliders, etc. since I just bought them a few months ago. If I could use the new Hookers with my current setup, then it would be a much easier choice.
09-10-2013, 01:28 PM
#15
Yes Sako, the Speedtech/ATS unit is a nice piece and certainly worth mentioning here. Our intention was to provide a similar level of engineered quality at a more affordable price to make it appealing to a broader range of users. I noticed that the Speedtech/ATS unit is listed at $369...knowing what I know about the build costs related to the new Hooker crossmember, it should come in at more than a $100 less than that. To each their own how they spend their hard earned cash I say, I just want to be sure to deliver the complete technical and geometric specifications of the new Hooker parts so members here can make a fully informed purchase decision without having to compare erroneous or imcomplete information.
10-17-2013, 02:50 PM
#19
The don't seal well to the engine even with the GM multi layer header gaskets, so I have a little header leak under the hood. Also, the passenger side header sits lower then the driver's side, and I had to dimple them in 3 places to get them to fit around my steering box and Pitman arm.
I'm thinking about replacing them this winter with something that fits right out of the box. Otherwise I'll just take them off, and have the flanges milled so they will seal to the heads.
09-14-2016, 05:40 PM
#20
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Yes Sako, the Speedtech/ATS unit is a nice piece and certainly worth mentioning here. Our intention was to provide a similar level of engineered quality at a more affordable price to make it appealing to a broader range of users. I noticed that the Speedtech/ATS unit is listed at $369...knowing what I know about the build costs related to the new Hooker crossmember, it should come in at more than a $100 less than that. To each their own how they spend their hard earned cash I say, I just want to be sure to deliver the complete technical and geometric specifications of the new Hooker parts so members here can make a fully informed purchase decision without having to compare erroneous or imcomplete information.
The AtS unit after running it for two years failed , it is not strong enough ,it made the trans sag considerably .
Which changed my pinion angles and caused more vibration as time went on.
with some small mods I made it more ridged. good design just to saggy.