Does anyone know if a 12bolt out of a 70 gmc truck will work in a 69 camaro?

 

May want to check axle lenghth & spring perches.

 

I can tell you that the truck rear end is to wide, also, the 10 bolt that your car should have is a stronger rear end than a 12 bolt. If you want a beefy set up and dont mind spending cash I would find an 77 to 84 ford truck 9inch big bearing rear end and have it cut down to fit and new spring perches from NPD welded on. We have done this particular build for a few of our customers who are building street rods and drag cars.