340 blocks

66plyValiant said
why do they work so much better from factory if there crap?:banghead:
MRL performance must be a chebby boy...

Really? Mopar only here buddy. I havnt touched a chevy in 20 years.

Why did the 340 run so great from the factory? Many reasons, until 1973 when they started building them like the rest of the pigs.

340's back in the day ran good.