is that a stock rear end or have my gears been played with

 

Hey 69 i went back through my post and seen what you put

Ok, another thought. You have an RS, which originally had TBI. Do you still have a TBI setup? Or what type of FI do you have? If the same TBI unit from the 305 was used on the 350, it's not big enough.
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what did you mean by its not big enough can u get bigger and better tbi units ?if so where would i look ?

 

Look on ebay, TBI units and separate injectors are out there. You can replace the whole unit, or just the injector pods, which would be easier.
The 305 injectors are GM part # 5235279 rated at 40 lb./hr.
The 350 injectors are GM part # 5235206 rated at 55 lb./hr.
Here's a little reading info. http://chevythunder.com/gm_throttle_...ction_pg_1.htm
Do some Google searching too, for more details on the TBI and also how to adjust the fuel pressure regulator (it's built into the unit).
You're probably going to want to boost yours some if you replace just the injector pods.

 

well i am going to go get a instrument cluster that came out of a car with 222k+ miles on it and its works fine or i can send it back for a full refund !i hope this changes everything for me