Anyone know anything about the Bowtie Phase II heads #034 castings? How do those compare to the stock L98 iron heads? Bigger valves, I see. How are they for street heads? What's a used set worth?

 

i put those on my 302. set i got came off a dirt car, but they sure as heck outflow the iron L98's. don't see any street issues. my set was dynoed at 550 + HP on a 10:1 355. you do need to check accessory holes, i was missing a few. i paid $500 for the pair used, but freshened with new valves. however, this isn't a fair comparison since the machinist i got them from is an old friend. but i personally think they are good heads.