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The biggest issue you will have is that you need to replace the transmission as well. A 2.8 and a small block have 2 different bolt patterns. those firebirds did come factory with a V8, so other than needing a transmission as well, dropping in a small block should go pretty easily. Good luck with the exhaust.

You will also need to put the V8 front springs in the car and possibly sway bar package also. For the whole handling package you should check out the complete suspension front to back including differential.

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Q: Would a 1986 Pontiac Firebird With a 2.8 V6 mount and bolt directly to a Chevy 350 If not what all would you need to replace so the motor will fit and run?
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