rear end noise?

[500hp93cobra]

Question......When ever I am going 25-30 mph, 3rd gear, when there isnt any torque on the rear it kurckunks....like when I coast in any high gear at a slower speed..it kurcklunks till I get on the gas a little....Does this sound like the rear needs to be re-shimmed?

 

[COBRA90GT]

What year cobra, '93?

 

[500hp93cobra]

yeah 93...347 stroker, vs1 vortec, 498 ft lbs 500 rwhp..373 gears. The odd thing is that it has always done it..I mean for years. Kinda anoying.

 

[brian98gt]

i had a similar problem and it was due to the pinion angle being off from when i had my upper and lower control arms installed. after it was set properly the noise was gone