Hello!

I am thinking about rebuilding the engine in my '86 Z28 5.0 TPI. Question: Does the engine have to be removed to accomplish this? I want to "take my time" and do it myself, a bit of a "fun" winter project. hehehe. I would like to upgrade the cam while I am at it, and maybe upgrade the pistons as well. Also going to do headers and full dual exhaust. However, not sure if I have to remove the block or not. Please share your thoughts. THANKS!

Note: At this point, I am not interested in swapping the block for a 5.7.

 

A proper job can't be done with the engine in the car.

 

If you plan on boring the block and/or getting oversized pistions, they you obviously have to remove the block.

The vast majority of time if there are many miles on the engine, the cylinders will be out-of-round and will need to be bored.

Even if you are just 'freshing' up the engine with new rings and bearings and new cam as you said, it will be much easier to do all of that on an engine stand rather than leaning over/crawling under the car to do it.

 

Thanks guys. I appreciate it!

 

I agree.

It can all be done in the car, but only a stupid Pontiac dealership would ever actually do that. The rest of us have more than 1 brain cell and just pull the motor.