I know I'll get a lot of different opinions but here goes.

We race a 88 caprice in a factory stock circle track division. We just blew our 350 and we have to build up a new engine for next year. I have 2-400's and 2-350's. We have to remain mostly stock (we've gotten away with running a bigger cam, a racing HEI ignition, and might get away with running a 383). We have to run q-jet 4 barrel.

What would be our best engine for this car? We run around 2800 rpms in the turns up to 5300 rpms in the straights.

I know the 400 would have more torque but would it take longer to get up the rpms? We need to accelerate quickly out of the turns.

An engine builder told me he would put a 307 crank in a 350 block to get a 327 displacement (I think I have that right). He said it would have good accell.

What do you all think? I need experienced help.