Once I get my engine adaptor sent off, I'll post you guys some ideas I've had on the log head.
Whats important is that the injector boses, whatever form, are solidly mounted. If they are to be welded in, they are going to need to be retruned to suit, as they distort. Secondly, they must sit so they focus on the back of the valve if at all possible. Not mandatory, but advisable.
Number 6 intake port is at a 60 degree angle down, number six is at 25 degrees. The last three ports 6,5 and 4 are at a 3 degree angle, the fronts (3,2 and 1) are level.
So the rail either has to be seperate over the last three 6, 5 and 4, and over the front 3,2 and 1. Unless you are a smart ass like me, and have a cunning plan to allow all six injectors to sit in line.
The exhast manifold has a 40 degree plunge, and there just isn't the room for a good set of 40 mm inlet trumpets unless you decide to cut the top half of the log off as a group at 6,5,4 and another at 3,2,1. Then the inlet tracts to supply air. You could just use the stock carb mount, and use it for air control. The other option is the 2-bbl 2300 Holley throttle body mod. The last, and best, is the full opening of the inlet manifold as per Hilborne practice, but without the throttle slides. This allows a modern EFI system to work.
My machinist is at work at that number too.
My Twinduction proposal allows a couple of alloy plates to be placed on the front and back portions of the log, and allows the central 1-bbl boss to stay as a holder for one extruded fuel rail. It's all simple. The trumpets can then be placed further back, and of a good 1.45"size to allow good air flow. The air contol is by a single or dual set of MAP sensors and throttle bodies. The injectors then have just enough room to get pride of place.
This allows the stock log to stay. There is just enough room to full the undercut exhast flanges full of weld, and this allows the exhast to be inlarged.
The removal of the whole log and exhast boses means ther is a ripe market for ME/SP/2V style intake manifolds. The exhast would have to follow ME/SP practice. I can see Jacks method working much better than mine if some one invests in making some nice intake and exhast manifolds to help out. As an EFI set up, it would kick everything out of contention.
As ever, you guys will get to see the idea, and I'll have mine built in the next few months. Like a lot of things, the idea is simple, the application is the key.
If I say more, I'll have to buy you all out!
