70 Z28 exhaust

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Johnny Horsepower · #1 05-14-2007, 07:20 PM

Hi all, for anyone who has good 2nd gen knowledge or exhaust knowledge. I just started to enjoy my 70 Z28. It is an original/restored 4spd with its original motor and i think gardner exhaust. I will know today when i get it up on a lift.
Here is my question, I get a lot of back cracks when i deaccelerate in this car. If i hold a gear and acceelerate and than back of I get some solid exhaust pops.
Is this normal for the LT1? Is something not adjusted correctly?
I am running on 100 oct. race gas, (unleaded I think)

Thanks

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