No, you can NOT press or drive the pins out of the pistons at home with a punch and a BFH. This requires a press and piston holding fixture to keep from destroying the pistons. Even with a "cradle" under them sometimes they still get damaged and need replaced.
Two things. Since the engine needs all this work, pull it out of the vehicle and put it on an engine stand. It takes about an hour to pull it, then minutes to take it all apart and find out what' s going on wit h the rods and pistons. They may simply be installed backwards in the block and you can move them to the other bank and the notches will now be facing the correct way, plus the offset wil improve ring seal as it side-loads the pistons as the engineers intended.
Doing all this work laying over the fenders is at least 10 times MORE diffciult, and now you need to jack it up and pull the oil pan to get the pistons out. At that point it's 85 percent out anyhow, so just go ahead and pull it out the rest of the way so you can effectively clean everything up before putting it back together........FWIW......
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73 Ventura, SOLD 455, 3740lbs, 11.30's at 120mph, 1977 Pontiac Q-jet, HO intake, HEI, 10" converter, 3.42 gears, DOT's, 7.20's at 96mph and still WAY under the roll bar rule. Best ET to date 7.18 at 97MPH (1/8th mile),
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