Any love for a 373 SB

Funny you should mention the destroked 340 to 5.0 litres , i was thinking about doing that , having an engine i could rev the crap out of , might be the way to go , as all i have now is a block heads and intake , how hard would it be to get 400+hp out of that destroked 340 . I'm looking for something different that if driven with a light foot like highway driving will match the mpg of my 340 about 22 mpg and pull low 13 in the 1/4 mile . i drive the car 120 miles a day so mpg matters , also ;l still like to have a bit of hp for some track time

Don’t bother with a destroked 340. It’s going backwards for the most part. You want a mileage car that runs 13’s? Take that 340/360, add a small cam with a 4bbl, run an OD trans with 4.10’s. Enjoy…..

Your next post is confusing since you want an engine turn 7500+. That makes no sense to running the above ET. Over reving? Rev limiter. The engine stutters, you shift. Problem solved. Case closed.

You also need to turn the right rocks over to find the parts you need for a all forged 372. It’s not that hard to do. Expensive that way. Part by part.