to all you guys running alston frame connnectors and the bmr torque arm relocation kit did you guys have interference issues when bolting it up.... im asking because the new crossmember is about 4 to 5 inches longer after the bolts end unlike the stock member when it ends like less than two inches after the bolt and as you can see in the picture the passenger side alston connector is right on the stock crossmember...... how am i suppose to mount the new crossmember without hitting the passenger side alston frame connector... im pretty sure that the driver side has enough length between the connector and bolt for it to fit but not the other side.. if you can see the green i scribbled on the pic there isnt much length between the crossmember and connector maybe like 2 inches and the bmr crossmember is again like 4 to 5 inches after the last bolt ends .... couldnt i move my new crossmember up one bolt on each side like i have circled yellow in the picture... because thats the only way i know how to get it on there..... gm makes everything a tight fit....
as you can see in the pic below the new unit is much longer than the stock crossmember....

 

if you move it up to the next hole wont the tranny bushing mount hole be too far foward as well?

from looking at the pics i would be grinding away at the trans mount and the SFC to get the clearance i needed. just knotch the trans mount to fit around the SFC and call it a day. those cross memebers are overly built anyways u prob wont affect its strength really at all... i meak look at it compared to the stock one lol

 

I would use a spacers between the subframe and the x-member, that would greatly reduce the amount that you have to notch the PS of the x-member, and you shouldn't have to modufy the DS end at all.

 

true! i didnt even think of that at 230am last nite lol... but u would def be changing pinion angle quite a bit... it would be in the wrong direction too. u dont want the tranny tail shaft pointing down to much. unless u also made or bought a spacer for the tranny mount as well. then just raise the whole trans memeber off the Subframe. idk how this would effect strength... would depend on the spacer thickness/material, and bolts you would use since the stockers might not be long enough.

 

Loss of strength would be minimal, might even be stronger if you welded your spacers in. I don't see anything wrong with putting a spacer under the transmission mount too, but I don't think dropping the back of the transmission by about 1/4" would matter.

 

well i would use steel spacers... get some 1/4" steel and weld it to the stock subframe (with holes cut for bolt holes and all lined up) im sure a 1/4" would be enough. if not u can stack up 2 peices of 1/4" steel. tack them together and then weld them to the subframe. if u make the spacers for each side make them as long as the crossmember mount. just trace the crossmember mount onto the steel. and also make the trans bushing spacer the same width/length as the steel part of the bushing that the crossmember bolts too.

i would think that 1/4" or so dropping the rear of the trans will make a noticable change in pinon. think about how much adjustablity there is with adjustable tq arm mounts? and they make only small amounts of pinion angle change. i would make it all spaced the same so u dnt have any issues.