The 250's can rev higher than the 292's.
the 292's have more torque.

i put a 292 in my 3104
got it at the junk yard for $600 and it was completely rebuilt w/ 600 miles... out of a wrecked 67 truck

we love it
500 edelbrock, clifford, langton headers, dual to single exhaust, hei, T5, 12 bolt,

Jim & Caroline
The highway is for gamblers, better use your good sense."
Gooday-that's my 1¢ answer due to the lousy economy ~ cause I ain't got - no . mo . doe
Every Shaver | Now Can Snore | Six More Minutes | Than Before ... | Half A Pound for Half a Dollar | Spread On Thin | Above the Collar || BURMA-SHAVE