The 340 is the biggest POS V8 Chrysler ever made.

yellow rose said
Who told you that?

Let's see.

Short deck
Piss poor rod to stroke ratio
Worse bore to stroke ratio
Cam closer to the crank
23* valve angle
Junky assed stud mounted rockers

Need I keep going?

GM used the softest cast iron out of the big three. Ford was a bit tougher but the Chrysler's had the best cast iron for production blocks.

The ONLY thing better about the SBC was the oiling system.

Just change the valve angles and the same basics apply to the BBC.

I was thinking those same issues, Mopars and Chevies were very similar but the small differences were where it mattered.

Also are you taking about the oiling circuit? Didn't Chevies use that obsolete inefficient dual-rotor oil pump though, not like the Mopar gerotor type? Always hear about Chevies slowly building oil pressure with RPM but Mopars hit max oil pressure basically off idle... really nice for off-roading or pulling heavy loads at low RPM