Speedmaster/Procomp Heads - New combo kit???
And it shows he was on the Forum Wednesday so those Speedmaster heads should have some serious miles on them now...?
I still pop in here from time to time. Sorry I never really followed up in this thread from 5 years ago.
Was really shocked to see that horrible video I did 5 years ago now has over 34,000 views on Youtube. (Need to tell Speedmaster they owe me a discount next time I order from them. LOL)
The heads worked out great. Made great power on the 408 short block I put them on. My Machine shop didn't find any issues with them. Everything checked out and they went on just like they came out of the box.
I was more than happy with the HP it was making but never did get it on a dyno like I had planned. Only problem I had with that build was I could never get the power to the ground with the stock suspension. It would get loose every time you got in it.
After I finished the build ended up selling that Duster (Like an Idiot, I will always regret selling that one) as I found an all original 340 TX9 Cuda that I had to have. Later sold that car and now have a 440 Duster.
As to how they hold up over the years, I can't say as the car has been sold a couple times since it left me and I don't know who has it now.
If I could find that same deal again, I would take it in a heartbeat. I got a set of CNC Ported Aluminum Heads complete, Air Gap Clone Intake, 950 Billet Carb and Cheap China Rocker arms all for under $1,300. Sold the Carb for $400 and the Rockers for $150. That put me at $750 for a set of CNC Ported Aluminum Heads and Air Gap Intake. I then sold the J Heads and Intake that came off the Motor for $500 so the whole upgrade actually cost me $250 out of pocket. Talk about Bang for the Buck!
Hell yes it was worth it. Would buy them again (And have bought another set last year for a 340 I have sitting on a motor stand right now when Speedmaster offered a 30% sale at the end of the year. I think I was about $790 to my doorstep on those thanks to the sale).
I am rebuilding the 440 out of my current Duster now and will be giving the 440 Source Aluminum heads a try on that one.
