[slowbird]

Originally Posted by Tim Corcoran

Just to clarify, the SM heads are designed in Austraila, cast in China, machined and assembled in California. You can call them, they will answer questions and you can order over the phone or online. They are not made by Pro Comp as some have said.

What design work went into them, lol. I think you mean they were copied in Australia

[Jay S]

Procomp electronics and speedmaster have many of the same part numbers and same company address.


Why wouldn’t a copy of something known to work, not work? Depends on how well it was copied. I’d say SM did a decent job copying. But let’s not give them more credit than they have due.

[Tim Corcoran]

Originally Posted by slowbird

What design work went into them, lol. I think you mean they were copied in Australia

Edelbrock copied Pontiac RA IV head, Speedmaster copied Edelbrock so what's the difference? Who did KRE copy?

Eagle billet rods come from China and machined in USA
Scat cranks are forged in China and machined in USA
Etc...

[slowbird]

Originally Posted by Tim Corcoran

Edelbrock copied Pontiac RA IV head, Speedmaster copied Edelbrock so what's the difference? Who did KRE copy?

Eagle billet rods come from China and machined in USA
Scat cranks are forged in China and machined in USA
Etc...

Edelbrock actually changed a lot. Valve location, port size, port shape, outer casting appearance, to list a few. SM pretty much just copied Edelbrock.