First some background on the car. BBC, t400 5000 stall,ford 9 4;10 gears Spohn everything underneath. 275/60/15 MT ET Pros. Comp eng. 90/10 in front. First time out to the track car spun the tire 40ft out using the trans brake 1.79 60 ft. Second pass no trans brake 4000 rpm launch 1.65 60 ft. played around with tire pressure but no avail. I have a 250 nos kit on tap but with traction issues i have not tryed it so no data on that.

Ive read some good thing about ALCAB so i picked up a set from BMR and installed them today. (Weld in type)

Heres were things went wrong i think. I welded in the brackets now i cant get the LCAs back into the lowest hole in the BMR brackets. Its not that they are not lined up. They are. I cant pull the rear twards the front of the car enough to put bolts in. Looks like it needs 3/4 inch more movement to line up.

Now after closer inspection it seems the drive shaft is pushed forwar into the trans at the yoke as far at it will go, thus thw reason it wont move forward enough.
I removed the drive shaft and pulled the spohn torque arm out. I had to move the top adjuster in as much as possible then reinstalled the arm.

At this point i was able to get the bolts back in the LCAs.
Now the drive shaft is too long and looks like i will need to have shortened at least one inch to get it back in.

Of course i would recheck pinion angle after i get DS back installed.

Now im not sure id the BMR brackets are going to help my 60 foot I sure hope so.

But i dont understand why i have to cut the drive shaft. it seems the brackets made the rear sit more forward thus making the drive shaft push more forward into the trans.. I was under the impression the brackets had a arced bolt pattern in order to keep the rear in the same position.

Clearly mine in more forward thus the drive shaft wont go back in .(To Long)

Does anybody done this install and experienced the same issue!

 

I have only read about the LCARBs so far but i know how or what angle you weld the LCARBs in is very important for the LCA to bolt up and not affect pinion angle. Have you searched yet? I know this is discussed on here. Call BMR and see what they say.

Just guessing i would say they are not installed correctly or you need adjustable LCAs.