Speedmaster Aluminum Heads

PRH said
A stock 452 is usually in the 220’s.

Plus the typical untouched 452 chamber is 88-90cc, the stealths are 80-81...... and closed chamber.

Unless you can get machine shop work done pretty cheap, if you’re going to start with an original set of high mileage oe heads....... you’ll probably spend about the same $$ refurbishing the old heads as buying stealths.

I haven’t seen the RPM copy style head available from SM in a while.
The only BB head I’ve seen from them for over a year is the Victor style head.

Ive already got reworked 452 heads on my 440 dart. they are not ported at all though. i thought maybe if the stealths flowed a good bit more out of the box than the stock 452's that i may buy a set and have them checked and install them but if they dont flow much more without porting than its not worth doing it until later down the road when i can afford a head that will flow better out of the box.