Speedmaster '8 Stack' Down Draft EFI System

[cycleguy55]

Just found out Speedmaster (a.k.a. Procomp) is now offering an individual runner / throttle body system like the '8 stack' systems. Ford BB 460 Speedmaster Down Draft EFI Intake Manifold System Complete Black | eBay

$1,350 for an IR system is attractive but, of course, you need to add the electronics, injectors, etc. for a total package. Interestingly, while they have the BBF ITB system on their eBay Store, it's not currently on their Web site. A turnkey 351W system is around $3,200 so, presumably, the turnkey BBF kit will be somewhere in that range when it becomes available, perhaps a bit more. Ford 351W Windsor Down Draft 8 Stack Turnkey EFI ITB System Kit

The Speedmaster Individual throttle body EFI system have all the flash of classic Weber induction but provide higher state of tune and engine performance versatility of EFI. Delivering crisp EFI performance with systems capable of supporting up to 1000 hp. Fuel and air is delivered through precision cast aluminum 50mm IDA style throttle bodies that allow for superior idle characteristics and astounding throttle response while improving emissions and economy through tight air/fuel ratio control.

- Speedmaster™ linkage set incorporates the throttle stops, idle controls, lever arms and joiner/balancer all in one. It also features a single screw adjustment for calibrating front to rear throttle shafts.
- The bell crank has a fully indexable eccentric cable pulley that enables good slow speed drivability and still attain full throttle geometry.

Speedmaster™ throttle bodies have the following feature:
- CNC machined, Heat treated 601 Cast aluminum.
- Butterflies are measured for each bore & precision machined to a closer tolerance.
- Butterflies are secured to centerless ground brass shafts with split screws to ensure reliability and service ability.
- All are fitted with bearings rather than bushings to eliminate axial shaft movement.
- Housing to shaft lip seals behind bearings for extra sealing under high vacuum
- Idle by pass air bleed screws for super smooth idle and to aid emissions tuning.
- O’ring seals on lower mounting faces.
- Throttle Body Opening: 52mm each.

Speedmaster / Procomp seem to have a spotty reputation - some products are good while some are best avoided (e.g. bare cylinder heads are good, but assembled heads use questionable components and/or assembly quality). There certainly is a mixed bag of thought out there about them.

Very interesting, and certainly a more attractive price point at a significant discount when compared to competing systems like Borla's or Inglese's. OTOH, if the Speedmaster / Procomp systems turn out to be crap, they're nothing but a big, expensive headache.