If you read the internet and listen to guys at the track...........there is a swinging dick on EVERY street corner with an inline valve, wedge smallblock, that makes over 900HP. I have been doing this stuff for a LONG time and have NEVER seen one, be it a Ford, Mopar or Chevy. As I said, you can do it with some canted valve stuff, but it's still not REAL easy and will be at a min of 40K if you do it with all new stuff.
I have done several 434ish Chevys and Fords, with the BEST 15-18* heads you can buy. A good one will make between 840 and 880, depending on cam, compression, rotating weight, etc. I have yet to see a Mopar head that was BETTER than the best off brand, so I am going to say it can't even realistically be done with an inline head........regardless to what some dyno sheets may say to the contrary
monte it can and has been done with the w8 stuff , my 390 was 920hp,ran 8.30@ 163.00 2850#, my uncle has a rwr 393 w8 that is 940hp 8.50's high 150mph @ 3100#, my avenger has a 300" w8 that is 705 I have run 9.05 @149.00 @ 3000# . all 13 degree head engines. NA in super stock cars. not one of these engines were under 40K . a few guys are selling p5 heads that are not cracked or leaking for 12 to 15 K. incase anyone is interested my 300" r3 w8 engine is for sale carbs to pan $15,000.00 . or the entire car for $45,000.00
