oVoSanto

Hi all! What do you think about Speedmaster Cylinder Heads?
I found them on Jegs at an accomodating price. Are "cheap style" or good heads?
Thx!

Neil B

Speedmaster = ProComp Motorsports. Lots to read on the internet about ProComp, but the short story is they are imported products at very aggressive pricing. I don't have any direct experience with their cylinder heads, so I will let others add comments regarding quality.

MotorHead

Yea they just keep changing the name, like painting a turd, looks shiny but still a turd. I wold look elsewhere

oVoSanto

Thank you all!

StraubTech

Brand new ProComp/Speedmaster head on BBC on the dyno. 2nd pull

StraubTech

Another engine, Ford. After 1 dyno pull:

Tim Ware

I looked up cylinder heads on You Tube & saw alot of interesting stuff. One person showed a cheap head & the leakage from the valves. I think the heading was " Don't bolt heads right out of the box " I'm looking at heads too, and I cannot be convinced that when the well-known brands like Edelbrock, Indy, Dart, etc. all run $2,000.- $3,000. a pair, that a pair of $900. heads are what I want on my engine. I'll pay the extra money for a known quality.

StraubTech

Any set of assembled heads needs to be pulled apart and checked. That average hotrodder will not have the tooling to do this so i would encourage anyone to take a set of heads to a shop for a once over. We had a set of $7000 heads in the shop that some fell asleep on the guide clearance.

madam

I traveled your path around a year ago when I built my 383 stroker.

Against CF advise I took a chance on a set of aluminum heads called ''Flo-Tek''.

$740 per pair assembled all the features of AFR. My understanding is that they are cast in Australia and CNC machined at the Tri State Cylinder Head Co. in Indiana. Speedway sells them from stock.

I now have 12,000 miles on them with 0 issues, maybe I got luckey but just passing the info on. I ported them to a Fel Pro #1206 intake gasket and match ported a new Edelbrock Performer Air Gap intake to them.

Here's some pics:

Dykem on ports


Gasket port profile scribed


Heavy metal removal in mill followed by die grinder polishing/blending


Finished Head


Process repeated on intake manifold. That baby really breathes above 3k rpm.

resdoggie

I think there is a lot of truth in the phrase "Fast, cheap, reliable - you only pick two". For critical components, I always pick fast and reliable and cough up the extra $$$.