Thanks for the comments folks. I'll try to respond to each question or comment in sequence.
Gary, these are 1.75" primaries. The collectors are tuned to the engine bore, stroke, cam timing, rpm range and more. They came out to be 2.25" transitioning to 2.5". Bolt pattern on my Victor Jr. heads is 2.00" but I've seen them at 2.5" and 2.75. I can get 304 ss flanges for almost any engine.
Dave & Bill, I'm hip to the throttle cable. I've been waiting for these headers to be able to pick where the cable runs. I have the choice of where it is now and between the front two cylinders. Guess its time to pull some throttle shafts and position the cable between the front two. Also I'm planning some snap-in heat shields so running the throttle cable up front will allow me to run it outside the shield.
Nathan, Having unequal length primaries will adversely effect performance. Not my fault. I'm just trying to duplicate the most popular headers design seen in small block GT40s. Original afficionados will notice the primary for cylinder number 7 is not quite right yet.
Ron & Bill, Big groan on the price. Hardware as seen is $2500. Labor has run over 40 hours on this first set. This is not unforeseen. After a few sets are completed I imagine we can get the hours down to 32. So that's another $2200 minimum. Can we have a collective groan at this point?
This is my "top end" offering so there are ways to reduce the price. Generic super-nice collectors instead of the tuned ones will save a couple hundred. You may not want the $400+ each ceramic cartridge ultra lite mufflers or the double slip fit connectors. That would be a $600+ price reduction. I'll have to make up a matrix of options. These are 16 gauge (.065") but we can get down to 20 gauge (.035")
Frank, I have no idea of the muffling characteristics of these mufflers. I know the 180 degree design is quieter by default and hese mufflers are used in USAC and SCCA in the states. We'll have to wait for the db level tests. We can fit other mufflers if these don't cover your noise level requirements.
New Product Alert - If you think these headers are sweet wait until you see my carbon fiber/graphite aerodynamic devices. First splitter should be ready before Jan 1.
Email me at
[email protected] for more info.
Mark